Interactive Effects Of Stress Research Articles

The interaction effect of water deficit stress and seaweed extract on phytochemical characteristics and antioxidant activity of licorice (Glycyrrhiza glabra L.)

IntroductionWith increasing drought stress due to climate change and water scarcity, the agricultural sector has sought innovative strategies to mitigate the detrimental effects on crop productivity. One approach that has received significant attention is the use of fertilizers and biostimulants as potential means of alleviating drought stress.MethodsIn this study, five different irrigation levels including 100% (control), 80% (slight stress), 60% (mild stress), 40% (moderate stress), and 20% (severe stress) of field capacity (FC) and seaweed extract (SWE) at three concentrations (0, 5, and 10 g/L) were applied to the pots containing one-year-old licorice (Glycyrrhiza glabra L.) plants in a factorial completely randomized design experiment with three replications for eight weeks.Results and discussionThe glycyrrhizic acid content increased with water stress intensity without the application of SWE until severe (20% FC) water stress treatment. The application of 10 g/L SWE under 100% FC led to a significant increase in the glycyrrhizic acid value (32.5±0.889 mg/g DW) compared with non-SWE application (30.0±1.040 mg/g DW). The maximum glabridin content (0.270±0.010 mg/g DW) was obtained under irrigation of 20% field capacity with 10 g/L SWE application. In addition, the activity of the all studied enzymes such as APX (ascorbate peroxidase), CAT (catalase), POD (peroxidase), and SOD (superoxide dismutase) were boosted by increasing the water stress levels. The use of SWE further enhanced the increase of some of these metabolites and enzymes, which, in turn, helped the plant to tolerate stress conditions through the scavenging of more ROS (Reactive oxygen species), wherein for this purpose, the SWE 10 g/L was more effective than other concentration. The plants efficiently eliminated ROS driven from drought stress by both non-enzymatic and enzymatic systems.

Effects of oxidative stress and protein S-nitrosylation interactions on mitochondrial pathway apoptosis and tenderness of yak meat during postmortem aging

To reveal the interaction of oxidative stress and protein S-nitrosylation on mitochondrial pathway apoptosis and tenderness development in postmortem yak meat. Herein, we selected yak longissimus dorsi muscle as the research object and treated hydrogen peroxide (H2O2) with S-nitrosoglutathione agent (GSNO) as well as Nω-nitro-L-arginine methyl ester hydrochloride (L-NAME) in mixed injections with 0.9 % saline as a control group, followed by incubation at 4 °C for 12, 24, 72, 120 and 168 h. Results showed that this interaction significantly increased mitochondrial ROS and NO content (P < 0.05) while weakening the antioxidant capacity of GSH and TRX redox response systems or accelerating the Ca2+ release process, leading to mitochondrial functional impairment and increased apoptosis rate. Notably, the H2O2 + L-NAME group showed more pronounced apoptosis. Hence, we suggest that the interaction between oxidative stress and protein S-nitrosylation could positively regulate yak meat tenderization.

Adaptation of SafeCare, an evidence-based parenting program, for caregivers of infants in the neonatal intensive care unit

BackgroundWhile there are several parenting programs for NICU caregivers, no studies, to our knowledge, have developed parenting programs aimed at preventing child maltreatment that specifically address these parental factors: parental stress, parental self-efficacy, and positive parent-infant interaction. ObjectivesThe objectives of this study were to: 1) Identify adaptations and/or augmentations needed to optimize SafeCare® for NICU caregivers, and 2) Examine the acceptability and preliminary effects of the adapted SafeCare NICU (SCNC) program with NICU caregivers. MethodsThis study consisted of two phases: formative (phase one) and pilot (phase two). For phase one, 5 NICU former caregivers and 5 NICU staff were interviewed to make relevant, NICU-specific adaptations for SCNC. Phase two consisted of a pilot study, where 13 current NICU caregivers were enrolled in the adapted SCNC program. Outcomes included acceptability and preliminary effects of parental stress, parental self-efficacy, and parent-infant interaction. ResultsAdaptations to SafeCare consisted of adding a pre-session to discuss individualized experiences, incorporation of adjusted developmental milestones, a NICU-specific resource sheet, and individualized adaptations to activities based on relevant medical concerns. Out of the 13 participants, 8 completed SCNC (61.5 % retention rate). Participants indicated significant reductions in stress after SCNC (Parental stress index score = 61.7) compared to baseline (79.2, p = 0.02). Among participants who completed SCNC (n = 8), all stated they supported this program for implementation among NICU caregivers. DiscussionThe adapted SCNC demonstrated acceptability among NICU caregivers.

Sex-based differences in brain morphometry under chronic stress: A pilot MRI study

BackgroundSex-based differences are known to be a significant feature of chronic stress; however, the morphological mechanisms of the brain underlying these differences remain unclear. The present study aimed to use magnetic resonance imaging (MRI) and voxel-based morphometry (VBM) to investigate the effects of sex on gray matter volume (GMV) changes under conditions of chronic stress. MethodsA total of 32 subjects were included for analysis in the present study: 16 participants experiencing chronic stress and 16 healthy controls. T1-weighted (T1WI) images from a 3 T MRI scanner were extracted from the OpenfMRI database. Images were segmented into gray matter using VBM analysis. A two-way analysis of variance (ANOVA) with a 2 × 2 full factorial design was used to evaluate the main and interaction effects of chronic stress and sex on GMV changes, and then post hoc testing was used to verify each simple effect. ResultsTwo-way ANOVA showed a chronic stress × sex interaction effect on GMV. Simple effects analysis indicated that the GMV of the bilateral pre- and post-central gyri, the right cuneus and superior occipital gyrus was decreased in males, whereas that of the bilateral pre- and post-central gyri, the right superior occipital gyrus and the left middle frontal gyrus and orbital middle frontal gyrus was increased in females, under chronic stress. Additionally, in the control group, the GMV of the bilateral pre- and post-central gyri, the right cuneus and superior occipital gyrus was greater in males than females. While in the chronic stress group, the above sex-based differences were no longer significant. ConclusionsThis study preliminarily shows that there are significant differences in gray matter volume changes between males and females under chronic stress. These findings provide a basis for future studies investigating the volumetric mechanisms of sex differences under chronic stress.

Gene‒environment interaction effect of hypothalamic‒pituitary‒adrenal axis gene polymorphisms and job stress on the risk of sleep disturbances.

Studies have shown that chronic exposure to job stress may increase the risk of sleep disturbances and that hypothalamic‒pituitary‒adrenal (HPA) axis gene polymorphisms may play an important role in the psychopathologic mechanisms of sleep disturbances. However, the interactions among job stress, gene polymorphisms and sleep disturbances have not been examined from the perspective of the HPA axis. This study aimed to know whether job stress is a risk factor for sleep disturbances and to further explore the effect of the HPA axis gene × job stress interaction on sleep disturbances among railway workers. In this cross-sectional study, 671 participants (363 males and 308 females) from the China Railway Fuzhou Branch were included. Sleep disturbances were evaluated with the Pittsburgh Sleep Quality Index (PSQI), and job stress was measured with the Effort-Reward Imbalance scale (ERI). Generalized multivariate dimensionality reduction (GMDR) models were used to assess gene‒environment interactions. We found a significant positive correlation between job stress and sleep disturbances (P < 0.01). The FKBP5 rs1360780-T and rs4713916-A alleles and the CRHR1 rs110402-G allele were associated with increased sleep disturbance risk, with adjusted ORs (95% CIs) of 1.75 [1.38-2.22], 1.68 [1.30-2.18] and 1.43 [1.09-1.87], respectively. However, the FKBP5 rs9470080-T allele was a protective factor against sleep disturbances, with an OR (95% CI) of 0.65 [0.51-0.83]. GMDR analysis indicated that under job stress, individuals with the FKBP5 rs1368780-CT, rs4713916-GG, and rs9470080-CT genotypes and the CRHR1 rs110402-AA genotype had the greatest risk of sleep disturbances. Individuals carrying risk alleles who experience job stress may be at increased risk of sleep disturbances. These findings may provide new insights into stress-related sleep disturbances in occupational populations.

Negative interaction effect of heat and drought stress at the warm end of species distribution

Geographic range limits of species are often a reflection of their ecological niche limits. In many organisms, important niche limits that coincide with distribution limits are warm and warm-dry conditions. We investigated the effects of heat and drought, as they can occur at the warm end of distribution. In a greenhouse experiment, we raised North American Arabidopsis lyrata from the centre of its distribution as well as from low- and high-latitude limits under average and extreme conditions. We assessed plant growth and development, as well as leaf and root functional traits, and tested for a decline in performance and selection acting on growth, leaf, and root traits. Drought and heat, when applied alone, lowered plant performance, while combined stress caused synergistically negative effects. Plants from high latitudes did not survive under combined stress, whereas plants originating from central and low latitudes had low to moderate survival, indicating divergent adaptation. Traits positively associated with survival under drought, with or without heat, were delayed and slowed growth, though plastic responses in these traits were generally antagonistic to the direction of selection. In line, higher tolerance of stress in southern populations did not involve aspects of growth but rather a higher root-to-shoot ratio and thinner leaves. In conclusion, combined heat and drought, as can occur at southern range edges and presumably more so under global change, seriously impede the long-term persistence of A. lyrata, even though they impose selection and populations may adapt, though under likely interference by considerable maladaptive plasticity.

Occupational Stress and Quality of Life among Rescue Workers: Moderating Role of Social Support

Background: Rescue workers, including firefighters, paramedics, and emergency responders, often face high levels of stress due to the nature of their work. This stress can be attributed to exposure to traumatic events, long working hours, and the pressure to make critical decisions in emergencies. Social support plays a crucial role in mitigating the effects of occupational stress and hence helps in maintaining a good quality of life. Objective: The present study aims to investigate the relationship between occupational stress, social support, and quality of life among rescue workers and to determine the moderating role of social support in the relationship between occupational stress and quality of life among rescue workers. Method: A purposive sample of 170 young adults with an age range of 22-30 years (M = 31.7, SD = 5.05) were taken from different Rescue Stations in Punjab and Khyber Pakhtunkhwa. The Occupational Stress Inventory, Pro-Quality of Life Scale, and Multidimensional Perceived Social Support Scale were used to assess the sample. Pearson product-moment correlation and moderation through multiple hierarchical regression analyses were run to test the hypotheses. Results: Results showed a positive relationship between occupational stress, burnout, and secondary traumatic stress among rescue workers. Further, it is found that compassion satisfaction is positive, and burnout and secondary traumatic stress domains of quality of life are negatively related to social support. Moreover, occupational stress negatively predicted the burnout and secondary traumatic stress domains of quality of life indicating higher occupational stress linked with higher burnout and secondary traumatic stress. The results also showed a significant positive interaction effect of occupational stress and support from significant others in predicting secondary traumatic stress among rescue workers. Conclusion: The study will contribute to the field of emergency services in depth. The findings will help the rescue administration improve the quality of life of rescue workers.

The Interaction Effects of Drought–Flood Abrupt Alternation on Rice Yield and Dry Matter Partitioning

The frequent occurrence of drought–flood abrupt alternation (DFAA) seriously affects crop yield. It is particularly important to explore the dynamics of material accumulation and distribution under DFAA stress to analyze the mechanism of yield formation. In this study, a bucket experiment with DFAA stress groups, drought control (DC) groups, flood control (FC) groups, and normal irrigation (CK) groups was set up from the jointing to the heading stage of rice to analyze the interaction effects of DFAA stress on rice yield and dry matter partitioning. The results showed that compared with the CK group, the average yield reduction rate of rice in the DFAA groups was 23.03%, and the number of grains per panicle, total grain number, thousand-seed mass, and seed setting rate decreased. Compared with the DC groups, the DFAA groups had a significant reduction in yield and its components during the flooding period. Compared with the FC groups, the DFAA groups showed a compensation phenomenon in the yield and its components during the drought period. From the end of DFAA stress to the harvest period, the root partitioning index (PI) of the DFAA groups decreased, the stem PI increased first and then decreased, the leaf PI decreased, and the panicle PI increased. The results showed that the rice leaves increased and thickened, and the stems thickened under DFAA conditions to enhance the ability to resist drought and flooding stress, but the panicle rate was reduced, the growth period of rice was delayed, and the redundant growth of stems and leaves was increased. It is suggested that the depth and duration of stagnant water storage during the flood period of DFAA should be controlled, and the transfer and supply of photosynthetic products to grains should be increased to avoid serious yield reductions. The research results provide a theoretical basis for the rational development of farmland DFAA mitigation measures.

Do non-traumatic stressful life events and ageing negatively impact working memory performance and do they interact to further impair working memory performance?

Stress and normal ageing produce allostatic load, which may lead to difficulties with cognition thereby degrading quality of life. The current study's objective was to assess whether ageing and cumulative stress interact to accelerate cognitive decline. With 60 participants, Marshall et al. found that ageing and cumulative stress interact significantly to impair working memory performance in older adults, suggesting vulnerability to the cumulative effects of life events beyond 60 years old. To replicate and extend this finding, we increased the sample size by conducting 3 independent studies with 156 participants and improved the statistical methods by conducting an iterative Bayesian meta-analysis with Bayes factors. Bayes factors deliver a more comprehensive result because they provide evidence for either the null hypothesis (H0), the alternative hypothesis (H1) or for neither hypothesis due to evidence not being sufficiently sensitive. Young (18-35 yrs) and older (60-85 yrs) healthy adults were categorised as high or low stress based on their life events score derived from the Life Events Scale for Students or Social Readjustment Rating Scale, respectively. We measured accuracy and reaction time on a 2-back working memory task to provide: a) Bayes factors and b) Bayesian meta-analysis, which iteratively added each study's effect sizes to evaluate the overall strength of evidence that ageing, cumulative stress and/or the combination of the two detrimentally affect working memory performance. Using a larger sample (N = 156 vs. N = 60) and a more powerful statistical approach, we did not replicate the robust age by cumulative stress interaction effect found by Marshall et al.. The effects of ageing and cumulative stress also fell within the anecdotal range (⅓<BF<3). We therefore conclude that there was inconclusive statistical evidence, as measured with a life events scale, that ageing and cumulative life stress interact to accelerate cognitive decline.

Stress and Right Prefrontal Transcranial Direct Current Stimulation (tDCS) Interactive Effects on Visual Working Memory and Learning.

Stress impacts prefrontal cortex (PFC) activity and modulates working memory performance. In a recent study, stimulating the dorsolateral PFC (dlPFC) using transcranial direct current stimulation (tDCS) interacted with social stress in modulating participants' working memory. More specifically, stress disrupted the enhancing effects of dlPFC tDCS on working memory performance. The current study aimed to further explore these initial findings by randomizing healthy females to four experimental conditions (N = 130); stimulation (right dlPFC tDCS vs. sham) and stress manipulation (social stress vs. control). Participants performed cognitive tasks (i.e., visual working memory task and a visual declarative memory task) at baseline and post-stimulation. They also completed self-report measures of stress and anxiety. A significant stimulation × stress interaction was evident in the declarative memory (One-Card Learning, OCL) task, while working memory performance was unaffected. Though tDCS stimulation and stress did not interact to affect working memory, further research is warranted as these initial findings suggest that immediate visual-memory learning may be affected by these factors. The limited number of earlier studies, as well as the variability in their designs, provides additional impetus for studying the interactive effects of stress and tDCS on human visual learning.

Revealing Interactions between Temperature and Salinity and Their Effects on the Growth of Freshwater Diatoms by Empirical Modelling

Salinization and warming are of increasing concern for freshwater ecosystems. Interactive effects of stressors are often studied in bifactorial, two-level experimental setups. The shape of environmental reaction norms and the position of the “control” conditions along them, however, can influence the sign and magnitude of individual responses as well as interactive effects. We empirically model binary-stressor effects in the form of three-dimensional reaction norm surfaces. We monitored the growth of clonal cultures of six freshwater diatoms, Cymbella cf. incurvata, Nitzschia linearis, Cyclotella meneghiniana, Melosira varians, Ulnaria acus, and Navicula gregaria at various temperature (up to 28 °C) and salinity (until the growth ceased) shock treatments. Fitting a broad range of models and comparing them using the Akaike information criterion revealed a large heterogeneity of effects. A bell-shaped curve was often observed in the response of the diatoms to temperature changes, while their growth tended to decrease with increasing electrical conductivity. C. meneghiniana was more tolerant to temperature, whilst C. incurvata and C. meneghiniana were the most sensitive to salinity changes. Empirical modelling revealed interactive effects of temperature and salinity on the slope and the breadth of response curves. Contrasting types of interactions indicates uncertainties in the estimation by empirical modelling.

Enhanced awareness of height-diameter allometry in response to climate, soil, and competition in secondary forests

The allometry between tree height (H) and diameter (DBH) is a central part of accurate carbon estimation and forest ecological evaluation. However, our awareness of the H-DBH allometry response to stressors is incomplete. For instance, pairwise and higher-order interactions of climate, soil, intraspecific competition, and interspecific competition were ignored, which may have led to important ecological insights not explored in H-DBH allometry. Besides, although secondary forests are cost-friendly mitigation tools requiring rational management, research on H-DBH allometry and management of secondary forests is far from adequate. Therefore, we pioneered the consideration of pairwise and higher-order interactions of competition, climate, and soil to enhance awareness of the relationship between stressors and H-DBH allometry. Moreover, H-DBH simulations under different competitive combinations were provided based on the actual local environmental levels, with the aim of providing targeted recommendations for secondary forests. The results showed that MAT (mean annual temperature), CF (coarse fragments), intraspecific BAL (the basal area of trees larger than the subject tree), and interspecific BAL were dominant stressors. The pairwise, third-, and fourth-order interactions significantly affected and improved the H-DBH model. The interactions affected H more than independent effects at times, and higher-order interactions produced comparable contributions to pairwise interactions. The independent and interactive effects of stressors on H were greatest in medium- and large-sized trees, which suggested sampling medium- and large-sized trees could reduce cost. Furthermore, the influencing directions of stressors on H were inconstant and depended on the gradients of other stressors due to the presence of interactions, which is generally consistent with the pressure gradient hypothesis and ecological laws. The simulation results indicated that the desired H-DBH allometry could be obtained by adjusting BALinter and BALintra according to the actual environmental level and management objectives of each stand. This study highlights the importance of considering interactions in credible H-DBH modeling, stressor impact analysis, and forest management policy development. Given the likelihood of ongoing climate change in the future, this study will assist in promoting sustainable management and informed decision-making in secondary forests.

Teacher–student relationships, stress, and psychosocial functioning during early adolescence

AbstractEarly adolescence is a time of increased stress and risk for poorer psychosocial functioning, but few studies have explored the relationship between stress and psychosocial functioning in the context of teacher–student relationships during early adolescence. This study used a two‐wave longitudinal design to investigate the unique and interactive effects of stress and teacher–student relationships on anxiety/depression, aggression, and rule‐breaking behaviors. The sample included 288 sixth‐ and seventh‐grade students (Mage = 12.01; 54% females; 47% Black, 36% White, 9% Hispanic) and their parents and teachers. Student‐perceived stress and teacher‐reported teacher–student conflict were related to more aggressive and rule breaking behaviors at Wave 1; perceived stress also predicted more anxiety/depression symptoms at Wave 1. Further, teacher‐reported teacher–student closeness predicted less aggressive behaviors over time. The findings suggest that interventions that promote stress management and positive teacher–student relationships may reduce adjustment problems concurrently and over time among early adolescents.

Harmful algal bloom aerosols and human health.

Harmful algal blooms (HABs) are increasing across many locations globally. Toxins from HABs can be incorporated into aerosols and transported inland, where subsequent exposure and inhalation can induce adverse health effects. However, the relationship between HAB aerosols and health outcomes remains unclear despite the potential for population-level exposures. In this review, we synthesized the current state of knowledge and identified evidence gaps in the relationship between HAB aerosols and human health. Aerosols from Karenia brevis, Ostreopsis sp., and cyanobacteria were linked with respiratory outcomes. However, most works did not directly measure aerosol or toxin concentrations and instead relied on proxy metrics of exposure, such as cell concentrations in nearby waterbodies. Furthermore, the number of studies with epidemiological designs was limited. Significant uncertainties remain regarding the health effects of other HAB species; threshold dose and the dose-response relationship; effects of concurrent exposures to mixtures of toxins and other aerosol sources, such as microplastics and metals; the impact of long-term exposures; and disparities in exposures and associated health effects across potentially vulnerable subpopulations. Additional studies employing multifaceted exposure assessment methods and leveraging large health databases could address such gaps and improve our understanding of the public health burden of HABs.

Interaction on Social Media Moderates the Effect of Stress on Insomnia

Psychosocial stress has been positively associated with sleep difficulties. We wondered whether stress during the COVID-19 pandemic would have a negative effect on insomnia in adolescents and whether this relationship would be moderated by virtual interaction with friends via social media and text messages, given previous evidence on friends being stress buffers for adolescents. In the present study, we collected self-reported frequency of insomnia (i.e., having an extremely hard time falling asleep), the stress level during the COVID-19 pandemic, and the experience of using social media and text messages to interact with friends from 138 healthy adolescents/young adults (62 females) aged 12-21.4 years (Mage=15.42 years, SDage=2.31 years). A multiple regression model revealed a significant main effect of stress (B= 0.57, p<.01), sex (B=0.45, p<.05) and an interaction effect of stress and the use of social media and text messages (B= -0.38, p= <.05) on the frequency of insomnia. The frequency of insomnia increased as a function of stress in adolescents/young adults, however, this sleep-stress association was weaker for those who used social media and text messages to communicate with friends than those who did not have these virtual interactions. These findings suggested that interaction with friends, albeit virtually, could serve as social buffers for adolescents, which may alleviate the impact of stress on sleep problems.

Dynamic growth mechanism of tin whisker driven by compressive stress under thermal-mechanic-electric-diffusion coupling

The dynamic growth mechanism of tin whiskers was studied by combining the phase field method, molecular dynamics simulation, and experiments. The growth driving forces of tin whiskers were defined considering the interaction effects of intrinsic stress, temperature, concentration and current, under the effect of thermal-mechanical-electrical-diffusion coupling. Tin whisker growth is a dynamic stress accumulation and relaxation process.When the stress and stress gradient accumulate to the critical value, tin whiskers start to grow and then decrease until they stop growing. Thereafter, tin whisker growth is triggered again when the stress and stress gradient accumulate to a critical value. The electromigration effect increases the stress caused by the accumulation of anode intermetallics and promotes tin whisker growth. Three-point bending results show that the length and density of tin whiskers in high-pressure stress area are noticeably larger than other areas owing to the superposition and counteraction of stress.

COVID-19 Economic and Academic Stress on Mexican American Adolescents’ Psychological Distress: Parents as Essential Workers

ABSTRACT Objectives In a sample of Mexican American adolescents (N = 398; 51% females; aged 13—17), we examined the associations between psychological distress, COVID-19 household economic stress, COVID-19 academic stress, and whether these associations varied by adolescents’ gender and by parents/caregivers’ essential worker status. Method First, linear regression models assessed the main effects of household economic and academic stress on psychological distress. Second, the moderating effects of gender and parents/caregivers’ essential worker status on the association between household economic and academic stress, and psychological distress were examined. Third, the three-way interaction effect of household economic stress, gender, and parents/caregivers’ essential worker status on psychological distress as well as the three-way interaction effect of academic stress, gender, and parents/caregivers’ essential worker status on psychological distress were calculated. Results Household economic and academic stress were associated with psychological distress. However, these associations did not vary based on adolescents’ gender or parents/caregivers’ essential worker status. The three-way interaction for household economic stress, parents/caregivers’ essential worker status, and gender for psychological distress was significant. Specifically, the effects of household economic stress on psychological distress was worse for boys than girls whose parents/caregivers were essential workers. Furthermore, the three-way interaction among academic stress, parents/caregivers’ essential worker status, and gender was significant. Particularly, the effects of academic stress when grades were worse on adolescents’ psychological distress was worse for boys than girls whose parents/caregivers were essential workers. Conclusion Parents/caregivers’ essential worker status was salient among Mexican American adolescents’ mental health outcomes during COVID-19, particularly for adolescent boys.

Integrated Effects of Water Stress and Plastic Film Mulch on Yield and Water Use Efficiency of Grain Maize Crop under Conventional and Alternate Furrow Irrigation Method

Water scarcity in arid regions increases the need for technologies to improve water productivity. The integrated effects of plastic film mulching and water stress on grain maize under conventional and alternate furrow irrigation methods are still poorly understood in Sindh’s climate. Therefore, field trials were conducted at Malir farm, Sindh Agriculture University Tandojam, Pakistan, during the cropping season 2020–2021 to investigate whether mulching is practicable for grain maize production under the different furrow irrigation methods. The experiments involved two types of furrow irrigation, two water stress levels (sufficient and severe water stress), and plastic film mulching. Treatments were laid out in a randomized block design and three replications. The conventional and alternate furrow irrigation method was assigned to the main plot, while the water stress and plastic film mulching were in sub-plots. The results showed that different furrow irrigation methods significantly affected plant growth, grain yield parameters, and crop harvest index. Significant highest plant growth and grain yield of maize crop were observed with the conventional furrow irrigation (CFI) compared with the alternate furrow irrigation (AFI) method. However, grain yield and irrigation water productivity (IWP) were increased significantly by the plastic film mulching. The results revealed that sufficient water stress was more effective in sustaining grain yield and IWP than crop irrigating at several water stresses. The interaction effect of furrow irrigation and water stress, furrow irrigation, and plastic film mulching significantly impacted the IWP of grain maize. The IWP of the maize crop was significantly higher under the AFI than the CFI method if it was mulched with plastic film and irrigated at sufficient water stress level.

Exogenous Appliance of Nano-Zeolite and Nano-Silicon Elevate Solidago canadensis Invasive Plant Tolerance to Water Deficiency

Plant production, soil quality, and a sustainable environment depend on climate change. Drought is a multidimensional stressor that seriously affects plant production. The most sensitive plant to climate change is the invasive goldenrod (Solidago canadensis L.), which has potentially high-value materials that can be used to develop a novel approach to controlling its spread. This study aimed to evaluate the impact of different applications (NPK-chemical fertilizers (T1) as control, nano-silicon (T2), nano-NPK (T3), nano-zeolite-loaded nitrogen (T4), and mixed nano-silicon with nano-zeolite-loaded nitrogen (T5)) on plant growth, flowering, chemical composition, yield, essential oil (EO) productivity, and tolerance of water deficit under newreclaimed soil. The results show that T5 application enhanced morphological traits and photosynthetic parameters (photosynthetic rate, CO2 concentration, and water use efficiency while reducing transpiration rate) in goldenrod plants. Moreover, it promoted the plant nutrients uptake compared to the control. The highest total carbohydrate, flavonoid, and phenol contents, as well as a significant amount of the phytohormone indole-3-acetic acid (IAA), were obtained from the T5 application. Conversely, abscisic acid (ABA) and antioxidant enzymes of catalase (CAT) and superoxide dismutase (SOD) appeared with the highest amounts in control plants (T1).Th interaction effect of T5 and drought stress is indicated by increased EO productivity and therapeutic properties.Previous results provide a way to elevate drought stress resistance for the safety production of S. canadensis and improve their qualitative and quantitative trials as economical solutions to achieve an environmental approach to control their spread.

Psychological distress modulates dorsal anterior cingulate cortex responses to salient stimuli in obsessive-compulsive disorder

BackgroundPatients with obsessive-compulsive disorder (OCD) experience an exacerbation of symptoms under psychological distress. The neurobiological underpinnings of this effect of stress remain elusive. Here, we induced psychological distress to explore its effect on neural reactivity of the salience network during a symptom provocation task. MethodsTwenty-three patients with OCD and twenty-three healthy volunteers underwent functional magnetic resonance imaging scanning after stress induction and a control condition in a cross-over design. Psychological distress was induced using the socially evaluated cold pressor test (SECPT) and neural responses were measured during a symptom provocation task. ResultsOCD participants showed a blunted cortisol response to the stressor. We found a group by stress interaction effect in the dorsal anterior cingulate cortex (dACC), such that psychological distress reduced dACC reactivity to emotionally salient pictures in OCD participants, whereas it increased dACC reactivity in healthy controls. LimitationsA considerable proportion of OCD participants was on medication, and the neuroimaging session was conducted more than 1 h after the initial stressor. ConclusionsConsidering this timeline, we speculate that the blunted dACC reactivity towards emotionally salient pictures in OCD participants may reflect impaired emotion regulation in the aftermath of stress.