Beneficial Plants Research Articles

Beneficial medicinal plants in digestive system disorders (part 2): plant based review

Beneficial medicinal plants in digestive system disorders (part 2): plant based review

Micro-habitats Utilizations, Feeding Niche Overlapping, and Management Systems Impacts on Community Tolerances of Wasp Species within Oil Palm Plantations.

A study on micro-habitats utilizations, feeding niche overlapping, and management systems impacts pertaining to hymenopteran community were evaluated at five chosen oil palm age stands within FELDA Sungai Tekam oil palm plantations, Pahang. Samplings were done within the duration of one year, employing the standard Malaise traps, starting from February 2013 till February 2014, involving both hot and wet seasons. 60 species, from 17 families and 35 subfamilies were successfully collected during the sampling periods. Eight defined micro-habitats were elaborated, with the subdivisions of major, minor, stable, and risky micro-habitat types. Management systems impacts were associated with the applications of chemical herbicides and fertilizers. Species groups were formed using Two-Way Hierarchical Cluster Dendrogram, following 75% of information remaining. Three species groups were formed for hot and wet seasons respectively, with the first group involved nearly half of the overall hymenopteran community. Beneficial nectariferous plants, heaps of chipped rotting oil palm trunks, and remnants of rotting forest logs were all the prominent micro-habitats associated will all cases of hymenopteran species groups, for both cases of major and minor micro-habitat types. Application of BASTA, Glyphosate-Type-A and Type-B herbicides, as well as NK-Mix, Borax, and GML chemical fertilizers were all highly correlated with hymenopteran species groups, showing the high tolerance of most hymenopteran species towards the employed management systems, with reference to minor micro-habitats. Strong feeding ecological niches and plexus values between species of similar species groups formed were specifically associated with discrete but connected minor micro-habitats with weaker food chains, collectively forming larger stable food webs within major micro-habitats. Suggestions on maintaining minor micro-habitats for the survival of most hymenopteran community, as well as the sustenance of their food sources were also discussed.

Micro-habitats Utilizations, Feeding Niche Overlapping, and Management Systems Impacts on Community Tolerances of Wasp Species within Oil Palm Plantations.

A study on micro-habitats utilizations, feeding niche overlapping, and management systems impacts pertaining to hymenopteran community were evaluated at five chosen oil palm age stands within FELDA Sungai Tekam oil palm plantations, Pahang. Samplings were done within the duration of one year, employing the standard Malaise traps, starting from February 2013 till February 2014, involving both hot and wet seasons. 60 species, from 17 families and 35 subfamilies were successfully collected during the sampling periods. Eight defined micro-habitats were elaborated, with the subdivisions of major, minor, stable, and risky micro-habitat types. Management systems impacts were associated with the applications of chemical herbicides and fertilizers. Species groups were formed using Two-Way Hierarchical Cluster Dendrogram, following 75% of information remaining. Three species groups were formed for hot and wet seasons respectively, with the first group involved nearly half of the overall hymenopteran community. Beneficial nectariferous plants, heaps of chipped rotting oil palm trunks, and remnants of rotting forest logs were all the prominent micro-habitats associated will all cases of hymenopteran species groups, for both cases of major and minor micro-habitat types. Application of BASTA, Glyphosate-Type-A and Type-B herbicides, as well as NK-Mix, Borax, and GML chemical fertilizers were all highly correlated with hymenopteran species groups, showing the high tolerance of most hymenopteran species towards the employed management systems, with reference to minor micro-habitats. Strong feeding ecological niches and plexus values between species of similar species groups formed were specifically associated with discrete but connected minor micro-habitats with weaker food chains, collectively forming larger stable food webs within major micro-habitats. Suggestions on maintaining minor micro-habitats for the survival of most hymenopteran community, as well as the sustenance of their food sources were also discussed.Â

Aiming for the biodiversity target with the social welfare arrow: medicinal and other useful plants from a Critically Endangered grassland ecosystem in Limpopo Province, South Africa

ABSTRACTUnderprivileged communities rely on beneficial plants for medicinal and cultural purposes as well as income generation. They are marginalised by land use planners, politicians and municipalities, resulting in biased integrated development and increased poverty. A case in point, is the Critically Endangered Woodbush Granite Grassland (WGG) in Limpopo Province, South Africa. The WGG has high plant biodiversity (661 species in 192 ha), which includes 18 Red Listed taxa and 36 taxa protected by existing legislation. Although 18% of the plant species have medicinal properties and the area is a source of plants used for medicine and hand brushes, this is the first ethnobotanical study to be undertaken here. Structured interview schedules were conducted with 54 people who were using plants from the area, and a list of the top 20 medicinal plants was compiled. Respondents raised concerns regarding the impact of fire management and 69% of traditional healers noted increasing difficulty in finding useful plants in the last decade. The majority of plant harvesters supported choices related to protecting the ecosystem. Propagated plants were considered to be an option by 60% of plant harvesters but serious risks to success were raised, suggesting that in situ biodiversity preservation was key to securing traditional healthcare and cultural practice. The socio-ecological system that exists is described and requires recognition by state bodies responsible for conservation and social welfare.

Nitrogen fertilization affects bacteria utilizing plant-derived carbon in the rhizosphere of beech seedlings

Forest ecosystems may act as sinks for or source of atmospheric CO2. While inorganic nitrogen (N) fertilization increases aboveground tree biomass, the effects on soil and rhizosphere microorganisms are less clear, indicating potentially unpredictable changes in nutrient cycling processes maintaining ecosystem functioning. Although plant-derived carbon (C) is the main C source in soils during the vegetation period, information on the response of rhizosphere bacteria assimilating rhizodeposits to increased soil N availability mainly for trees is missing. We performed a greenhouse experiment with 13C-CO2 labelled young beech seedlings grown under different N fertilization levels. DNA Stable Isotope Probing (DNA-SIP) in combination with TRFLP and pyrosequencing enabled us to identify bacteria assimilating plant-derived C and to assess the main responders phylogenetically. Although above- and belowground allocation of recently fixed photosynthates remained unchanged, microbial rhizosphere community composition was clearly affected by fertilization. Besides, we found lower 13C incorporation into microbial biomass in fertilized soil. Moreover, it could be shown that only a small subset of the rhizosphere microbiome incorporated recently fixed C into its DNA, dominated by Proteobacteria (Alpha- and Betaproteobacteria) and Actinobacteria (Actinomycetales). Our results suggest that N fertilization may change both the diversity of bacterial communities using rhizodeposits and assimilation rates of recently fixed photosynthates. Given the close interaction of beneficial and/or deleterious microbes and plants in the rhizosphere, this could potentially have positive or negative implications for plant performance on long-term.

Impacts of 2 species of predatory Reduviidae on bagworms in oil palm plantations

Integrated pest management (IPM) is widely practiced in commercial oil palm agriculture. This management system is intended to minimize the number of attacks by pest insects such as bagworms on crops, as well as curb economic loss with less dependency on chemical pesticides. One practice in IPM is the use of biological control agents such as predatory insects. In this study, we assessed the response of predatory natural enemies to pest outbreak and water stress, and document the habitat associations of potential pest predators. The abundances of 2 predatory insect species, namely Sycanus dichotomus and Cosmolestes picticeps (Hemiptera: Reduviidae), were compared bagworm outbreak sites and nonoutbreak sites within oil palm plantations. We also examined habitat characteristics that influence the abundances of both predatory species. We found that the abundance of C. picticeps was significantly higher in bagworm outbreak sites than in nonoutbreak sites. There were no significant differences in the abundance of S. dichotomus among outbreak and non-outbreak sites. Both species responded negatively to water stress in oil palm plantations. Concerning the relationship between predatory insect abundance and in situ habitat quality characteristics, our models explained 46.36% of variation for C. picticeps and 23.17% of variation for S. dichotomus. Both species of predatory insects thrived from the planting of multiple beneficial plants in oil palm plantations. The results suggest that C. picticeps can be used as a biological agent to control bagworm populations in oil palm plantations, but S. dichotomus has no or little potential for such ecosystem service.

Managing Semi-natural Habitats of Pollinators within Agro-ecosystems

Although wild pollinators are better conserved within protected areas and natural parks, where floral diversity and shelters are available, for agricultural production it is more convenient to conserve pollinators within agricultural fields. Recently, implementation of floral margins in agricultural landscapes has been shown to increase the abundance of pollinators in agro-ecosystems and positively affects production of neighbouring crops. However, special attention should be focused on the selection of beneficial insectary plants and their management in the agro-ecosystems. Therefore, this short review highlights the importance of choosing appropriate plants to attract beneficial insects and to consider their attractiveness to pollinators, ecology, physiology, floral phenology, and potential weediness prior introducing them in agro-ecosystems.

PM 9/20 (1) Parthenium hysterophorus

PM 9/20 (1) <i>Parthenium hysterophorus</i>

Biodegradation of chlorpyrifos by bacterial genus Pseudomonas.

Chlorpyrifos is an organophosphorus pesticide commonly used in agriculture. It is noxious to a variety of organisms that include living soil biota along with beneficial arthropods, fish, birds, humans, animals, and plants. Exposure to chlorpyrifos may cause detrimental effects as delayed seedling emergence, fruit deformities, and abnormal cell division. Contamination of chlorpyrifos has been found about 24 km from the site of its application. There are many physico-chemical and biological approaches to remove organophosphorus pesticides from the ecosystem, among them most promising is biodegradation. The 3,5,6-trichloro-2-pyridinol (TCP) and diethylthiophosphate (DETP) as primary products are made when chlorpyrifos is degraded by soil microorganisms which further break into nontoxic metabolites as CO(2), H(2)O, and NH(3). Pseudomonas is a diversified genus possessing a series of catabolic pathways and enzymes involved in pesticide degradation. Pseudomonas putida MAS-1 is reported to be more efficient in chlorpyrifos degradation by a rate of 90% in 24 h among Pseudomonas genus. The current review analyzed the comparative potential of bacterial species in Pseudomonas genus for degradation of chlorpyrifos thus, expressing an ecofriendly approach for the treatment of environmental contaminants like pesticides.

Redefining Unusable Weeds to Beneficial Plants: Purslane as a Powerful Source of Omega-3 for the Future

&lt;p&gt;With global consumer demand shifting towards the consumption of healthier foods, it is crucial to discover new sources of edible plants with high nutritional value and low cost. Unique weeds such as purslane have the potential to be used as an untapped source of unconventional food with diverse nutrients and beneficial bioactive properties. Inflammation can cause oxidative stress related diseases including cardiovascular disorders, aging and cancer. One key nutrient of purslane is omega-3 with potential of inhibitory properties against inflammatory and estrogenic mediators. Purslane is known to be a rich source of a-linolenic acid, 18:3 ω-3, an essential fatty acid, carotenes, antioxidants and minerals. However, the precise mechanism of action of its individual components in disease prevention is unknown. This review provides a summary on the role of purslane bioactives, particularly omega-3 fatty acids as one of purslane’s main constituents with potential of anti-inflammatory and anti-estrogenic properties. The discovery of new sources of plants rich in omega-3 fatty acids may be a useful strategy in utilizing natural alternative sources of foods that can enhance human health and wellbeing.&lt;/p&gt;

Effects of weed harrowing frequency on beneficial arthropods, plants and crop yield

Weed harrowing is an alternative to herbicides but it may have negative effects on epigaeic arthropods. We assessed the effects of frequent (four) versus two harrowings during the growing season on the density and diversity of generalist arthropods and the weed flora. Collection by flooding was used to estimate arthropod densities, after collection of weeds and crop for biomass estimation. The predatory guild of spiders Tachyporus spp. carabids was reduced by frequent harrowing. Spiders and Tachyporus spp. were the most sensitive, with up to 38% higher density in plots harrowed only twice compared with four times. Furthermore, a marginally significant decrease in arthropod diversity was found after four harrowings. The negative effect of frequent harrowing on arthropods was probably caused by a combination of direct lethal effects and habitat disruption. Additional harrowings reduced weeds with weed seed biomass, on average, being 77% higher and species diversity being 48% higher in plots harrowed only twice compared with four times. There was a positive relationship between weed biomass and predatory arthropod guild density, supporting the hypothesis that weeds promote generalist arthropod predators. Weed harrowing should be carried out early and limited to a minimum to protect flora and fauna. Frequent harrowing had no positive effect on yield, suggesting that more weeds can be tolerated to support biodiversity and biocontrol.

Bacterial inoculants for rice: effects on nutrient uptake and growth promotion

Beneficial soil bacteria are able to colonize plant root systems promoting plant growth and increasing crop yield and nutrient uptake through a variety of mechanisms. These bacteria can be an alternative to chemical fertilizers without productivity loss. The objectives of this study were to test bacterial inoculants for their ability to promote nutrient uptake and/or plant growth of rice plants subjected to different rates of chemical fertilizer, and to determine whether inoculants could be an alternative to nitrogen fertilizers. To test the interaction between putatively beneficial bacteria and rice plants, field experiments were conducted with two isolates: AC32 (Herbaspirillum sp.) and UR51 (Rhizobium sp.), and different nitrogen fertilization conditions (0%, 50%, and 100% of urea). Satisfactory results were obtained in relation to the nutrient uptake by plants inoculated with both isolates, principally when the recommended amount of nitrogen fertilizer was 50% reduced. These bacterial strains were unable to increase plant growth and grain yield when plants were subjected to the high level of fertilization. This study indicated that the tested inoculant formulations can provide essential nutrients to plants, especially when the levels of nitrogen fertilizers are reduced.

Potential Honey Bee Plants of Egypt

AbstractThere are various plants with potential feeding importance to honey bee, Apis mellifera, colonies as source of pollen, nectar or both. Selection of suitable regions for apiaries mainly depends on the availability of honey bee plants in the apiary region. Identifying honey bee plants in specific region is very essential for honey and pollen production from honey bee colonies. Lacking the information about the beneficial plants for honey bees including; plant name, flowering time and potential benefit to honey bee colonies could be considered as a limitation for beekeeping development. So far honey bee plants are not well studied in Egypt. This review paper presents potential honey bee plants in Egypt using the available publications. The studies on honey bee plants in Egypt were also reviewed. This work can be considered as a guide for beekeepers and researchers. Moreover, the presented plants here can be used in comparing honey bee plants of Egypt with other countries to get a better understanding of honey bee flora. More detailed investigations on honey bee plants are strongly required to be done at all Egyptian Governorates

Baculovirus insecticides in Latin America: historical overview, current status and future perspectives.

Baculoviruses are known to regulate many insect populations in nature. Their host-specificity is very high, usually restricted to a single or a few closely related insect species. They are amongst the safest pesticides, with no or negligible effects on non-target organisms, including beneficial insects, vertebrates and plants. Baculovirus-based pesticides are compatible with integrated pest management strategies and the expansion of their application will significantly reduce the risks associated with the use of synthetic chemical insecticides. Several successful baculovirus-based pest control programs have taken place in Latin American countries. Sustainable agriculture (a trend promoted by state authorities in most Latin American countries) will benefit from the wider use of registered viral pesticides and new viral products that are in the process of registration and others in the applied research pipeline. The success of baculovirus-based control programs depends upon collaborative efforts among government and research institutions, growers associations, and private companies, which realize the importance of using strategies that protect human health and the environment at large. Initiatives to develop new regulations that promote the use of this type of ecological alternatives tailored to different local conditions and farming systems are underway.

Management of Aquatic Vegetation in the Southeastern United States

Aquatic vegetation is managed throughout the southeastern United States with the guidance of state and federal aquatic plant management plans. These plans often suggest ways to promote the growth of beneficial aquatic plants while attempting to guide the reduction and elimination of unwanted “weedy species.” Aquatic species are divided into the categories of algae, submersed, emergent, and floating species and this classification is based on the morphology and growth habit of the identified species. These species are surveyed using multiple research techniques designed to identify and manage the resource based on the needs of the stakeholder. Management practices can be subdivided into physical, mechanical, biological, and chemical control to reduce or eliminate an undesirable weed species. This document reviews current literature related to management of aquatic plants and provides an overview of problematic aquatic weeds in the southeastern United States.

Macro and Micro Nutrient Composition of Some Indigenous Green Leafy Vegetables in South-East Zone Nigeria

There are several green leafy vegetables already implicated in possessing high nutritional values. There is still the need to add to the growing list of these beneficial plants in order to create more varieties in the food menu of the Nigeria populace. This study examined the proximate, vitamins and mineral composition of some indigenous green leafy vegetables (Psychotria sp, Cnidoscolus aconitifolius and Telfairia occidentalis). Ten (10) kg each of the Green Leafy Vegetables (GLV) was plucked, sorted, cleaned by rinsing with deionized water and solar dried. The dried samples were pulverized and package in an air-tightpolytthene bags. The result showed that proximate composition of the GLVs showed moisture content of raw and dried samples (Psychotria sp had 62.30 and 12.87%, C.aconitifolius 82.16 and 12.87% and T. occidentalis 86.28 and 9.82%). Crude protein was high in raw and dried samples. It ranges from 11.75-27.32% in Psychotria sp, 4.83-24.13% in C. aconitifolius and 5.26-35.06% for T.occidentalis. T. occidentalis had the highest ash and crude fibre (10.07 and 5.20% ), followed by C.aconitifolius (8.10 and 4.73%). These GLVs are good sources of pro-vitamin A, B2, C and E. Psychotria sp had the highest pro-vitamin A and E (5.31-6.64 mg and 3.65-4.35 mg/100 g) while C.aconitifolius (437.7 and 291.17 mg) and T.occidentalis (420.86 and 277.80 mg/100 g) had the highest vitamins C content. These GLVs also had appreciable quantity of minerals (K, 46.43-423 mg; Na, 1.02-19.96 mg; P, 58.34-566.75 mg; Ca, 1.76-8.76 mg; Mg, 1.20-6.02 mg and Fe 1.77-11.80 mg/100 g). This study therefore showed that Psychotria sp and Cnidoscolus aconitifolius are good sources of macro and micro nutrients.

Fertilization with beneficial microorganisms decreases tomato defenses against insect pests

The adverse effects of chemical fertilizers on agricultural fields and the environment are compelling society to move toward more sustainable farming techniques. “Effective microorganisms” is a beneficial microbial mixture that has been developed to improve soil quality and crop yield while simultaneously dramatically reducing organic chemical application. Additional indirect benefits of beneficial microorganisms application may include increased plant resistance to herbivore attack, though this has never been tested till now. Tomato plants were grown in controlled greenhouse conditions in a full-factorial design with beneficial microorganisms inoculation and commercial chemical fertilizer application as main factors. We measured plant yield and growth parameters, as well as resistance against the generalist pest Spodoptera littoralis moth larval attack. Additionally, we measured plant defensive chemistry to underpin resistance mechanisms. Overall, we found that, comparable to chemical fertilizer, beneficial microorganisms increased plant growth fruit production by 35 and 61 %, respectively. Contrary to expectations, plants inoculated with beneficial microorganisms sustained 25 % higher insect survival and larvae were in average 41 % heavier than on unfertilized plants. We explain these results by showing that beneficial microorganism-inoculated plants were impaired in the induction of the toxic glycoalkaloid molecule tomatine and the defense-related phytohormone jasmonic acid after herbivore attack. For the first time, we therefore show that biofertilizer application might endure unintended, pest-mediated negative effects, and we thus suggest that biofertilizer companies should incorporate protection attributes in their studies prior to commercialization.

Protective Effect of Tragopogon Graminifolius DC Against Ethanol Induced Gastric Ulcer

BackgroundGastric ulcer is a serious digestive system problem and affects 5% to 10% of people during their life. Chemical antigastric ulcer drugs have side effect, cannot prevent recurrence of ulcer and also show drug interaction with many other medicaments. Tragopogon graminifolius DC.(TG) is a herb which is widely used in the west of Iran and traditionally consumed for the treatment of gastrointestinal disorders. TG was introduced as one of the most beneficial plants for digestive ulcer in Iranian traditional medicine.ObjectivesThe aim of the present study was to determine the acute toxicity and protective effect of hydroalcoholic extract of TG (HeTG) against ethanol induced gastric ulcer.Materials and MethodsMale Wistar rats were divided into five groups (n = 7). HeTG at the doses of 50, 100, and 150 mg/kg were administered orally for 15 days and gastric ulcer was induced by pure ethanol (1 ml/200gr body weight). Ulcer index and protective rate were calculated and histological changes were determined.ResultsHeTG was nontoxic up to 2000 mg/Kg. Ulcer index decreased in extract groups significantly. Protective rates of HeTG were 48.94%, 46.39%, and 43.99% in 50, 100, and 150 mg/kg extract, respectively. 50 mg/kg HeTG group had higher protective effect. There was relatively normal cellular arrangement in HeTG groups.ConclusionsTG showed protective effect against ethanol induced gastric ulcer. This study confirmed traditional medicine claims of TG.

Induction of resistance against pathogens by β-aminobutyric acid

Among the many types of plant stressors, pathogen attack, mainly fungi and bacteria can cause particularly severe damage both to individual plants and, on a wider scale, to agricultural productivity. The magnitude of these pathogen-induced problems has stimulated rapid progress in green biotechnology research into plant defense mechanisms. Plants can develop local and systemic wide-spectrum resistance induced by their exposure to virulent (systemic acquired resistance—SAR) or non-pathogenic microbes and various chemical elicitors (induced systemic resistance—ISR). β-Aminobutyric acid (BABA), non-protein amino acid, is though to be important component of the signaling pathway regulating ISR response in plants. After treatment with BABA or various chemicals, after infection by a necrotizing pathogen, colonization of the roots by beneficial microbes many plants establish a unique physiological state that is called the “primed” state of the plant. This review will focus on the recent knowledge about the role of BABA in the induction of ISR against pathogens mainly against fungi.

Entomofaunal Diversity of Diptera at FELDA Besout 6 Oil Palm Plantation

A study on diversity and abundance of Diptera was conducted for six consecutive months in oil palm plantation located in Felda Besout 6. Traps used in this study ware Malaise traps which been installed in three different study sites in the oil palm area. A total number of 2381 Dipterans were succesfully collected comprising seven families and 37 morphospecies during this study. Margin area recorded the highest number of Diptera collected with 905 individuals (seven families, 33 morphospecies) collected while the beneficial plants recorded the least abundant of Diptera with 615 individuals (seven families, 32 morphospecies). Cecidomyiidae was the most abundant family with 1551 individuals followed by the Culicidae, Chironomidae, Tephritidae, Tachinidae, Muscidae and Tipulidae with 480, 203, 55, 43, 43 and 6 respectively. Based on Shannon-Wiener Index (H’), all study sites (margin of an oil palm plantation, the beneficial plants and the interior of an oil palm plantation did not differ significantly with P> 0.05 with respectively recorded value (H’= 2.641), (H’= 2.569) and (H’= 2.504). The study showed that diversity and abundance of Diptera was higher in the margin of FELDA BESOUT 6 compared to the interior of the oil palm plantation and the beneficial plants.