Macronutrient Deficiencies Research Articles

Quantitative Proteomic Analysis of Brassica Napus Reveals Intersections Between Nutrient Deficiency Responses.

Macronutrients such as nitrogen (N), phosphorus (P), potassium (K) and sulphur (S) are critical for plant growth and development. Field-grown canola (Brassica napus L.) is supplemented with fertilizers to maximize plant productivity, while deficiency in these nutrients can cause significant yield loss. A holistic understanding of the interplay between these nutrient deficiency responses in a single study and canola cultivar is thus far lacking, hindering efforts to increase the nutrient use efficiency of this important oil seed crop. To address this, we performed a comparative quantitative proteomic analysis of both shoot and root tissue harvested from soil-grown canola plants experiencing either nitrogen, phosphorus, potassium or sulphur deficiency. Our data provide critically needed insights into the shared and distinct molecular responses to macronutrient deficiencies in canola. Importantly, we find more conserved responses to the four different nutrient deficiencies in canola roots, with more distinct proteome changes in aboveground tissue. Our results establish a foundation for a more comprehensive understanding of the shared and distinct nutrient deficiency response mechanisms of canola plants and pave the way for future breeding efforts.

The influence of micronutrients and macronutrients excess or deficiency on thyroid function

The thyroid gland’s functionality is complex and is influenced by a variety of compounds, notably iodine, selenium, iron, calcium, thiamine (vitamin B1), vitamin B12 and vitamin D. This study aims to elucidate the significance of micronutrients and macronutrients in the functioning of the thyroid gland and explore how nutrient imbalances may lead to various thyroid disorders, including thyroid cancer. Keywords: macronutrients, micronutrients, thyroid carcinoma, thyroid functioning

Insights into student perspectives regarding food fortification in a private medical and engineering college, Bhubaneswar, Odisha: a qualitative study

Food fortification is a crucial public health intervention aimed at addressing nutrient deficiencies and improving overall health outcomes. There is need in diet enhancement as macronutrient and micronutrient deficiency can lead to malnutrition in the long run. Young adults are the budding future of the community and their perception on food fortification and its adaptation can help the policy makers to generate better ways to implement it. This review article presents findings from a qualitative exploration of awareness regarding food fortification among students in a private college in Bhubaneswar, Odisha through an academic program. Through focus group discussions (FGDs), we investigated students' (medical and engineering) understanding of the advantages and disadvantages of food fortification. Among the medical students, 50% were aware about food fortification, 40% were in favour of it and only 10% had misconception regarding food fortification. Whereas, among the engineering students, 72.2% were aware, 45.45% were in favour and none had any misconception or myth related to food fortification. To create awareness and promote fortified food, engineering students suggested better ideas than medical students. This analysis revealed insights into perceptions, knowledge gaps, and potential strategies for enhancing awareness and promoting the adoption of fortified foods.

Foliar spray of glycine-chelated zinc (Zn) and iron (Fe) lowered the effect of macronutrient deficiencies and enhanced rice yield components, yield, and grain biofortification

The current investigation amid the alleviating of the macronutrient [Nitrogen (N), Phosphorus (P), and Potassium (K)] deficiency effects on rice yield, yield components, and grain biofortification by foliar spraying of Zn and Fe chelated by glycine amino acid (ZFCG) on the flooded rice conditions. Three-factor factorial experiment was conducted based on a randomized complete block design with three replications. The experimental factors were: macronutrients [Nitrogen (N), Phosphorous (P), and Potassium (K)] soil application at two levels (100 and 50% of the recommended dose) and foliar application of ZFCG during the booting and ripening stages at three levels (0, 1, and 1.5 kg ha−1). The results clearly showed that the foliar spraying of 1.5 kg ha−1 ZFCG significantly increased the growth characters, yield attributes, yields, and white rice nutritional quality of Hashemi cultivar both at the application of 100% (normal condition) and 50% (nutrient stresses condition) of the recommended rate of NPK. The foliar application of 1.5 kg ha−1 ZFCG increased the rice grain, straw, biological yield, head rice yield, and harvest index of the plots that received 50% of the recommended rate by about 14.6, 10.12, 50, 7.5, and 6.7% compared to the values of the control plots (no adding the NPK), respectively and 49.25, 31.21, 31.60, and 16.67% at the plots that received 100% of recommended NPK, respectively. Moreover, the foliar application of glycine amino acid-Fe and Zn chelate at two vital rice growth stages increased the value of the Zn, Fe and protein content of white rice at the plots that received 1/2 of the recommended dose of NPK by about 52.37%, 2 times, and 8.64% compared to control plots, respectively, and also 20.77%, 2 times, and 12% at the plots that received 100% of recommended NPK, respectively. The observed values are close to their values in those plots that have received 100% of recommended rate of NPK without foliar application. Therefore, it can be concluded that the foliar co-application of 1.5 kg ha−1 ZFCG during the two important rice growth stages (booting and ripening) might both alleviate the improper and imbalanced macronutrient deficiency stresses and enhance the rice grain yield and biofortification at flooded rice cultivation.

Revisional Bariatric Surgery After Roux-en-Y Gastric Bypass for Bile Reflux: a Single-Center Long-Term Cohort Study.

Revisional bariatric surgery (RBS) after primary Roux-en-Y gastric bypass (RYGB) is indicated for the efficient management of specific complications such as bile reflux. Published literature on this topic remains scarce as we aim to evaluate the long-term outcomes (10years) of RBS for bile reflux after RYGB. We conducted a single-center retrospective study of patients who underwent primary RYGB complicated by bile reflux and had RBS between 2008 and 2023. Our cohort was divided into two groups based on the etiology of bile reflux. Long-term surgical outcomes and nutritional status were reported and compared between the groups. A total of 41 patients (100% primary RYGB; 90.2% female, 97.6% white) were included. 56.1% (n = 23) of patients underwent Roux limb lengthening and the remaining 43.9% (n = 18) had a gastrogastric fistula takedown, with no significant differences in terms of intraoperative complications, estimated blood loss (p = 0.616), length of hospital stay (p = 0.099), and postoperative complications between the two groups. Long-term resolution of obesity-related medical conditions was demonstrated for all the evaluated comorbidities. Lastly, there was no reported mortality, bile reflux recurrence, or micro- and macro-nutrient deficiencies over the total follow-up period of 10years. In our cohort, RBS after a primary RYGB for bile reflux management demonstrated safe and efficient short- and long-term surgical outcomes without any reported bile reflux recurrence or mortality. Adequate supplementation and close patient follow-up remain essential to decrease the morbidity and mortality associated with RBS as further studies are required to support our findings.

A falsehood that has been repeated many times becomes true, the origin of the diabesity pandemic, the most lethal of the 21st century?

The malnutrition pandemic has reached alarming proportions in the 21st century, with nearly 860 million people suffering from obesity, almost 1.8 billion overweight, and around 900 million experiencing malnutrition due to macronutrient and micronutrient deficiencies worldwide. This issue affects over 40% of the global population, highlighting a concerning prevalence of malnutrition worldwide and its close association with chronic diseases. With eight out of 10 leading causes of global mortality being non-communicable diseases, predominantly of cardiometabolic origin, the malnutrition pandemic has become a serious threat to global health. This phenomenon has been exacerbated by the parallel increase in Type 2 Diabetes Mellitus, leading to the coining of the term "diabesity" to describe the interaction between diabetes and obesity, considered the deadliest of the 21st century. Despite nutritional interventions implemented 70 years ago, such as the Food Pyramid and the promotion of healthy lifestyles, there has been an exponential increase in interrelated cardiometabolic conditions, including cardiovascular diseases, diabetes, and cancer, dementia, and neurodegenerative diseases. This raises questions about the effectiveness of research-based recommendations over the decades, which may have been potentially flawed and deeply influenced modern life and culture, fueling sugar addiction and the pleasure of eating, and capitalizing extensively on the market economy. It is essential to make structural decisions to dismantle particularly erroneous modifications, whether nutritional or otherwise, and educate both new generations and healthcare professionals about a new paradigm of healthier and more flexible lifestyles. This scientific essay focuses on critically reviewing the most prominent evidence supporting modern dietary and lifestyle modifications, and analyzing the historical behavior of clinical conditions that these interventions sought to modify. This allows for inferences about the potential error of research and decisions made, and sowing a new founded theory that promotes paradigm shift after rigorous research in this regard. In the context of the pandemic, these new investigations acquire even greater relevance and urgency to address the global crisis of malnutrition and diabetes.

Genome-wide association studies and transcriptomics reveal mechanisms explaining the diversity of wheat root responses to nutrient availability.

Nutrient availability profoundly influences plant root system architecture, which critically determines crop productivity. While Arabidopsis has provided important insights into the genetic responses to nutrient deficiency, translating this knowledge to crops, particularly wheat, remains a subject of inquiry. Here, examining a diverse wheat population under varying nitrogen (N), phosphorus (P), potassium (K), and iron (Fe) levels, we uncover a spectrum of root responses, spanning from growth inhibition to stimulation, highlighting genotype-specific strategies. Furthermore, we reveal a nuanced interplay between macronutrient deficiency (N, P, and K) and Fe availability, emphasizing the central role of Fe in modulating root architecture. Through genome-wide association mapping, we identify 11 quantitative trait loci underlying root traits under varying nutrient availabilities, including homologous genes previously validated in Arabidopsis, supporting our findings. In addition, utilizing transcriptomics, ROS imaging, and antioxidant treatment, we uncover that wheat root growth inhibition by nutrient deficiency is attributed to ROS accumulation, akin to the role of ROS in governing Arabidopsis root responses to nutrient deficiency. Therefore, our study reveals the conservation of molecular and physiological mechanisms between Arabidopsis and wheat to adjust root growth to nutrient availability, paving the way for targeted crop improvement strategies aimed at increasing nutrient use efficiency.

Effects of dietary imbalances of micro- and macronutrients on the ocular microbiome and its implications in dry eye disease

Dry eye disease (DED) is a complex and multifactorial ocular surface disease affecting a large proportion of the population. There is emerging evidence of the impact of the microbiomes of the ocular surface and gut on the symptoms of DED, with many parallels being drawn to inflammatory diseases of other organ systems. A key factor involved in the promotion of healthy microbiomes, and which has been associated with ocular surface disease, is micro- and macronutrient deficiency. A comprehensive review of how these deficiencies can contribute to DED is absent from the literature. This review reports the composition of healthy ocular and gut microbiomes, and how nutrient deficiencies may impact these floral populations, with linkage to the subsequent impact on ocular health. The review highlights that vitamin B1 and iron are linked to reduced levels of butyrate, a fatty acid implicated in inflammatory conditions such as ulcerative colitis which itself is a condition known to be associated with ocular surface diseases. Vitamin B12 has been shown to have a role in maintaining gut microbial eubiosis and has been linked to the severity of dry eye symptoms. Similar beneficial effects of gut microbial eubiosis were noted with vitamin A and omega-3 polyunsaturated fatty acids. Selenium and calcium have complex interactions with the gut microbiome and have both been implicated in the development of thyroid orbitopathy. Further, diabetes mellitus is associated with ocular surface diseases and changes in the ocular microbiome. A better understanding of how changes in both the gut and eye microbiome impact DED could allow for an improved understanding of DED pathophysiology and the development of new, effective treatment strategies.

Comprehensive assessment of nutritional and functional status of patients with ulcerative colitis and their impact on quality of life.

Patients with ulcerative colitis (UC) are likely to have poor nutritional intake and increased gut losses. This study was designed to study the prevalence and predictors of nutritional deficiencies in patients with UC and their impact on thequality of life (QOL). A prospective study was conducted among consenting patients with UC (cases) and healthy relatives of the cases (controls) visiting a university teaching hospital. They were assessed for clinical, demographic, endoscopic (Mayo score) and histological profile (Robart's score). They were assessed for thepresence of macronutrient and micronutrient deficiency, anthropometry, functional status (muscle strength by dynamometer and sit-to-stand test) and thequality of life (short inflammatory bowel disease questionnaire [SIBDQ]). A SIBDQ score of ≤ 50 was considered poor QOL. We studied 126 cases and 57 healthy controls (age [mean ± SD] 37.7 ± 13.2years vs. 34.40 ± 11.05years; [p = 0.10] females [38.1% vs. 38.7%]; p = 0.94). Cases more often were underweight (28% vs. 3.5%; p < 0.001), had low mid arm circumference (45% vs. 12%; p < 0.0001), lower functional status in the form of weaker hand grip strength (67% vs. 45.6%; p = 0.007) and weaker lower limb strength (80% vs. 42%; p < 0.0001). Cases more often hadthe evidence of macronutrient deficiencies: total serum protein deficiency (31% vs. 3.5%; p < 0.0001), serum albumin deficiency (25.4% vs. 0.00%; p < 0.0001) and cholesterol deficiency (63% vs. 28%; p < 0.0001). Micronutrient deficiencies were highly prevalent among cases: calcium (44%), phosphate (21%), magnesium (11%), zinc (76%), iron (87%), folate (16%), vitamin B12 (10%) and vitamin D (81%). Most cases had a poor quality of life (85/126; 67.5%). Factors associated with poor QOL were low hemoglobin, serum albumin, zinc and vitamin D levels and histologically active disease. On multi-variate analysis, low vitamin D levels (odds ratio [OR] = 6.1; 95%confidence interval [CI]: 1.9-19.7) and histologically active disease (OR = 4.0; 95%CI: 1.6-9.9) were identified as independent predictors of poor QOL. Macronutrient deficiency, micronutrient deficiency, lower functional status and poorer QOL are highly prevalent among patients with UC. The independent predictors of poor QOL were histologically active disease and low serum vitamin D levels. Identifying and correcting the deficiencies may help in improving the QOL of patients with UC.

Autoimmune gastritis

Diagnosis of autoimmune gastritis (AIG) is often challenging because of the absence of typical symptoms. Clinical guidelines are lacking, which results in inadequate treatment and poor cancer screening. This work presents an overview of current management options and aims at raising awareness for this disease. The paper also describes a clinical case of the full-scale course of AIG with all its complications. Autoimmune gastritis is mostly considered as a disease of elderly with vitamin B12 deficiency and pernicious anaemia. Today it is recognized that AIG is found with a similar prevalence in all age groups, with iron deficiency being a frequent symptom. Conventional therapy consists of adequate iron and vitamin B12 supplementation, as well as symptomatic approaches. The associated risk for gastric adenocarcinoma and gastric neuroendocrine tumours requires regular endoscopic follow-up. New treatments aiming to reduce gastric atrophy and cancer risk are currently under development. Thus, treatment of autoimmune gastritis should focus on optimizing supplementation of vitamin and macronutrient deficiencies, symptomatic therapy that improves quality of life, and include cancer prevention measures. Clinical studies should address the possibility to arrest the inflammation process and to prevent progression of AIG. The author of the article suggests that itopride hydrochloride and rebamipide will be used for symptomatic and pathogenetic therapy. The problem facing gastroenterologists today is to develop domestic guidelines for the management and screening endoscopic intervals of patients with AIG.

Principles of management of patients with short bowel syndrome

Short bowel syndrome (SBS) is a rare disease accompanied by the phenomena of malabsorption (impaired absorption of food) and maldigestion (phenomena of creato-, steato-and amilorrhea), as a result of resection of most of the small intestine (usually with a residual part of the intestine less than 200 cm) from – due to various etiological factors. One of the severe complications of this syndrome is the development of intestinal failure, which can be manifested by the occurrence of water, electrolyte and white matter disturbances, hypovitaminosis, and deficiency of micro-and macronutrients. It is possible to suspect the development of intestinal failure if the patient continues to have repeated diarrhea 2–3 months after surgery and a progressive decrease in body weight by 5% or more of the initial weight within a month. Therefore, an important aspect in the treatment of SBS is the correction of electrolyte disturbances and maintenance of nutritional status. However, the severity of the patient’s condition is often determined not only by the course of the disease itself, but also by the long-term use of parenteral nutrition after surgery. Therefore, an important aspect in the management of patients with SBS is the cessation of parenteral nutrition as early as possible and the transition to a physiological nature of food intake. This can be achieved both by choosing certain surgical treatment techniques and by using drug therapy – an analogue of glucagon-like peptide-2 – Teduglutide, which increases the functional ability of enterocytes to absorb. SBS is a significant social problem due to the high mortality rate in childhood and a significant percentage of disability in people of working age, which makes it highly relevant to discuss the management strategy for this category of patients.

Early-season maize responses to salt stress: Morpho-physiological, leaf reflectance, and mineral composition

Salt stress is a major environmental factor that affects maize production. The impact of salt stress during the early vegetative stage inhibits growth and development. In this study, two maize hybrids, A6659 and P1316, were subjected to five salinity treatments with electrical conductivity 0, 3, 6, 9, and 12 dS m−1 for 28 days. A total of 26 traits were evaluated, including morpho-physiological, biomass, leaf reflectance, and mineral composition in two independent studies. Under salt stress, stomatal conductance and transpiration were reduced, resulting in a canopy temperature rise of 4 °C. A higher salinity level (12 dS m−1) reduced plant height (47%) and total leaf area (44%), consequently reducing total shoot dry weight (37%) and total root dry weight (24%). Leaf minerals such as potassium, magnesium, and phosphorous declined with increasing salt concentrations. The elevated salt concentration in the rhizosphere caused an increase in leaf reflectance at the near-infrared (NIR) region, which is attributed to macronutrient deficiency under stress conditions. The results demonstrated that maize could withstand salt stress up to 3 dS m−1, beyond which plant performance declines depending on the genetics. This study provides insights into key traits that can be used for screening or breeding maize for early-season salt stress tolerance.

Nutrition challenges following total pancreatectomy with islet autotransplantation.

Total pancreatectomy with islet autotransplantation (TPIAT) is a surgical treatment option for patients with chronic pancreatitis who have not responded to other therapies. TP offers pain relief whereas IAT preserves beta cell mass to reduce endocrine insufficiency. During the surgical procedure, the entire pancreas is removed. Islet cells from the pancreas are then isolated, purified, and infused into the liver via the portal vein. Successful TPIAT relieves pain for a majority of patients but is not without obstacles, specifically gastrointestinal, exocrine, and endocrine challenges. The postoperative phase can be complicated by gastrointestinal symptoms causing patients to have difficulty regaining adequate oral intake. Enteral nutrition is frequently provided as a bridge to oral diet. Patients undergoing TPIAT must be monitored for macronutrient and micronutrient deficiencies following the procedure. Exocrine insufficiency must be treated lifelong with pancreatic enzyme replacement therapy. Endocrine function must be monitored and exogenous insulin provided in the postoperative phase; however, a majority of patients undergoing TPIAT require little or no long-term insulin. Although TPIAT can be a successful option for patients with chronic pancreatitis, nutrition-related concerns must be addressed for optimal recovery.

What's (Not) in Your Supplement? An Energy and Macronutrient Analysis of Commercially Available Carbohydrate Gels.

Carbohydrate (CHO) gels are a staple among endurance athletes. When ingested during competition, CHO gels can improve endurance performance by acting as an external energy substrate, sparing endogenous glycogen, mitigating the risk of hypoglycemia, and engaging the central nervous system via receptors in the mouth and gastrointestinal tract. However, published studies and a growing number of anecdotal reports have raised concerns about possible energy and macronutrient deficiencies in several products. We therefore performed a content analysis on CHO gels from Gu Energy, Honey Stinger, Hüma, Maurten, Näak, Precision Fuel, Science in Sport, and Spring Energy. On average, products contained significantly less energy than stated on the labels (n = 8, p = .109, large effect) but with no discrepancy in CHO content (n = 8, p = .219, medium effect). Bland-Altman analyses revealed a systematic bias toward less energy and CHO in measured samples relative to the label-derived nutritional information. Moreover, the Spring Energy product fell outside the 95% limits of agreement for both energy and CHO, containing ∼71% less energy (53 vs. 180kcal) and ∼72% less CHO (12.5 vs. 45g) than stated on the label. A follow-up analysis revealed similar discrepancies in several Spring Energy products from multiple lots. These findings have performance, clinical, and legal implications.

Histological examination of the young Oncorhynchus mykiss intestines using the feed with chelated and probiotic supplements.

Macronutrient and micronutrient deficiencies in the fish diet can affect fish growth rate, ability to resist disease, and fillet quality. Determination of effective dose of developed feed additives consisting of chelate compounds of biogenic elements and probiotic preparation based on Bacillus subtilis. Young rainbow trout were divided into four groups consisting of 100 fish each. The control group received standard food; the experimental groups received food with chelates and probiotics in different concentrations. At the end of the experiment (30 days), the middle intestine histology and morphometric parameters were studied. The use of chelated compounds alone affected the state of the intestinal villi and the infiltration of the epithelium by lymphocytes. The addition of a probiotic had a positive effect on the migration of immune cells in the intestinal villi; however, the probiotic in high concentrations contributed to a decrease in the number and area of goblet cells. Synergistic effects of chelated compounds and probiotic preparations on the morphometric parameters of the medium intestine were observed. In the proper doses, the studied feed additives might be recommended for rainbow trout farming under industrial aquaculture conditions.

Impact of nutritional factors and lifestyle in the etiology of macronutrients deficiency causing New World Syndrome

Impact of nutritional factors and lifestyle in the etiology of macronutrients deficiency causing New World Syndrome

Perception of Nutrition in Adults with Sickle Cell Disease: Concept Elicitation of Nutritional Status and the Mini Nutrition Assessment

Introduction Sickle Cell Disease (SCD) is a genetic disorder that causes recurrent vaso-occlusive pain events, functional impairment, and nutritional deficiencies due to increased metabolic demands. Prior studies have highlighted nutritional issues in people with SCD, such as micronutrient and macronutrient deficiencies, low body mass index (BMI), and a recent rise in obese adults with SCD. In older adults in the general population, evaluation and management of nutritional status is essential since malnutrition can weaken the immune system and increase the risk of hospitalization and death. Despite the importance of nutrition, little is known about the best way to evaluate nutritional status in older adults with SCD. To identify a relevant yet efficient method to evaluate nutritional status, we conducted content elicitation interviews to describe how younger and older adults conceptualized nutrition. Based on the content of the interviews, we piloted a brief nutritional survey called the Mini Nutritional Assessment (MNA); a common nutritional measure in geriatric assessments. Methods As standard practice for concept elicitation, we conducted semi-structured interviews with adults SCD in 4 separate focus groups: two groups of young adults age 18-39 and two groups of older adults age ≥ 40 years. Participants were asked about their perception of the construct of nutrition as part of a longer concept elicitation interview assessing the content validity of the Sickle Cell Disease Functional Assessment (SCD-FA), which is the geriatric assessment for adults with SCD. After focus group transcripts were analyzed using rapid qualitative analysis, we administered the MNA to a separate cohort of adults with SCD, since its content on macronutrients and hydration was consistent with how adults with SCD conceptualized nutrition. The scores on the 6-item MNA-Short Form (MNA-SF) range from 0 to 14 with higher scores indicating better nutritional status. Scores 12-14 indicate a normal nutritional status, 8-11 indicate at risk for malnutrition, and 0-7 indicate a malnourished state. Results The 4 focus group interviews included 6 younger adults (age 18-39) and 8 older adults (age ≥ 40 years) with SCD. Participants were 57% females and 79% had severe SCD genotype (HbSS or HbSβnull-thalassemia). In the focus groups, participants described a healthy diet as one that included the major food groups, which were generally defined as protein, fruits and vegetables, and starches/carbs. The majority discussed the importance of adequate hydration to reduce the risk of pain crises. Additionally, participants reported trying to substitute water for soda, juice, and caffeine containing beverages. Many participants stated that a healthy diet involved limited processed foods and sugars. Despite knowledge of the characteristics of a “healthy” diet, some participants expressed difficulty maintaining this diet. Based on these qualitative results, we selected the MNA to evaluate nutrition since it included items on hydration and assessed intake of various food groups as described by focus group participants. We administered the MNA-SF to a cohort of 88 adults with SCD and 81 had complete data to score the MNA-SF. The mean score for the MNA-SF for all participants was 11.7 ± 1.8 (younger adults 11.6 ± 1.9 and older adults 11.9 ± 1.8; p= 0.44). The MNA-SF identified 40% (n=34) as being at risk of malnutrition [36% of older adults and 46% younger adults]. Two participants were identified as being malnourished (1 younger and 1 older adult). On remaining MNA items (Table 1), 25% of participants reported decreased food intake with 17% having only 1 meal/day. Most participants (85%) consumed ≥ 1 serving of protein/day and 75% had ≥ 2 servings of fruits or vegetables/day. Most participants (68%) drank &amp;gt; 5 cups of water/day. Results were similar for younger and older adults with SCD. Conclusion Data from the focus group interviews revealed that BMI and unintentional weight loss measures alone did not comprehensively capture how people with SCD perceived the concept of nutrition. Incorporating the MNA-SF enhanced measurement of the nutritional domain in the SCD-FA by capturing data on food intake and hydration. In future studies we will assess the construct validity of the full MNA in a larger sample to identify older adults with SCD who would benefit most from nutritional interventions.

Effect of Deficiency-adjusted Macronutrients to Cure Brown Bast Syndrome in Rubber Tree (Hevea brasiliensis)

The brown bast (BB) syndrome causes a 15-20% loss of annual rubber (Hevea brasiliensis) production in Malaysia, and no sustainable remedy has been developed yet. Initial investigation showed a macronutrients deficiency in the bark of affected plants compared to non-affected plants. Therefore, this study was undertaken to know the effect of spraying the deficient macronutrients in curing BB syndrome and increasing latex productivity. The treatments were selected by adjusting deficient nutrients, especially in N, K, and S, compared to healthy plants. The treatments consisted of 13 combinations of nutrient concentrations and a control (no application on healthy rubber trees). One liter of individual treatment per tree was applied on the trunk of BB-affected trees once a week for one month. Data on latex production was collected one week after the last application and continued for up to three months. The results showed that the treatment T9 (0.5% N, 0.8 mg/L K, and 0.2% S), in addition to other prescribed nutrients, made a 100% cure of BB syndrome after three weeks of application, and the nutrient contents of the bark of the affected plants appeared to be similar to the healthy plants. Applying these additional nutrients enhanced the latex production at the rate of 51.85 g/tapping/tree after two months of treatment application under the agro-ecosystem of FELCRA, Simpang Renggam, Johor, Malaysia. It is a new finding to 100% cure BB syndrome and to increase the latex productivity in sustaining the rubber industry in Malaysia.

Morpho-Physiological, Chlorophyll Fluorescence, and Diffuse Reflectance Spectra Characteristics of Lettuce under the Main Macronutrient Deficiency

The aim of the present work was to assess the physiological state of plants and photosynthetic apparatus activity in lettuce (Lactuca sativa L.) by non-invasive methods (leaf diffuse reflectance spectroscopy and chlorophyll fluorescence) under the deficiency of one of the macronutrients (nitrogen, phosphorus, or potassium). Our experiments assessed the deficiency of each of the macronutrients relative to plants vegetating under optimal nutrition. The used methods showed that the deficiency of macronutrients causes changes in the optical characteristics of lettuce plants (cvs. ‘Vitaminnyi’ and ‘Kokarda’), including a decrease in the chlorophyll content (57% and 51%) and a change in metabolism, which leads to a decrease in the efficiency of light energy conversion in photochemical processes of photosynthesis and an increase in the dissipation of excess light energy (19% and 10%). Linear regression equations, describing the relationship between net productivity and spectral characteristics of diffuse leaf reflectance with high accuracy, have been obtained. Changes in all studied indicators of the physiological state of plants under the influence of macronutrient deficiency are more pronounced at the early stages of development than in later periods, when the first symptoms of aging appear (decrease in ChlRI). The observed differences between lettuce cultivars and their response to nitrogen, phosphorus, or potassium deficiency are non-specific and mainly represent quantitative variation. The method for assessing the spectral characteristics of diffuse reflection of leaves seems to be the most promising for monitoring the physiological status of plants and early detection of nitrogen, phosphorus, or potassium deficiency.

Assistance in Preparing Anti-Anemia Food Menus to Prevent Stunting for Young Women and Posyandu Cadres in Tunjuk Village, Tabanan Regency Year 2023

Anemia is a health problem throughout the world, especially in developing countries, where an estimated 30% of the world's population suffers from anemia. Anemia in adolescent girls is still quite high. Anemia is a nutritional problem that often occurs in teenagers, especially young women. Anemia is a continuation of the impact of deficiencies in macronutrients (carbohydrates, proteins, fats) and micronutrients (vitamins, minerals). In adolescent girls, the need for iron increases because they experience regular menstruation which releases a certain amount of iron every month. This increase in the need for total blood volume is often not accompanied by adequate iron consumption, especially when teenage girls tend to want to have a slimmer body, so they often make various efforts, including going on a strict diet.Based on data from the 2022 Indonesian Nutrition Status Survey (SSGI), the prevalence of stunting among children under five in Tabanan Regency is still above the prevalence of stunting in Bali Province (8.0%) while in Tabanan Regency it is 8.2%. Research on female vocational school students in Tabanan Regency found that 54.2% had low levels of energy consumption, 32.5% had low levels of protein consumption, 88.0% had very low levels of iron consumption, 96.4% had very low levels of folic acid consumption. less and 78.3% have a very low level of vitamin B12 consumption and the level of knowledge about Anemia and CED, most of the Young Women have little knowledge about Anemia and CED, namely 84% less, 14% enough and 2% good. This lack of knowledge will affect the attitude of young women towards anemia and CED so that when they are pregnant they tend to experience anemia and CED and will give birth to stunted babies. The nutrition education that has been carried out is not enough to increase knowledge and especially attitudes of teenagers towards the risk factors for stunting, therefore the service will carry out training in preparing anti-anemia food menus for young women and Posyandu cadres in Tunjuk Village, Tabanan District. The priority solution is to improve the skills of young women and posyandu cadres to create anti-anemia food menus to prevent stunting by providing training. The method used to achieve this community service objective was to carry out training for 2 days for 50 young women and Posyandu cadres. This community service activity was carried out in Tunjuk Village, Tabanan District, Tabanan Regency in July 2023.