Ageratum conyzoides L. and Its Secondary Metabolites in the Management of Different Fungal Pathogens

Molecules, Год журнала: 2021, Номер 26(10), С. 2933 - 2933

Опубликована: Май 14, 2021

Ageratum conyzoides L. (Family—Asteraceae) is an annual aromatic invasive herb, mainly distributed over the tropical and subtropical regions of world. It owns a reputed history indigenous remedial uses, including as wound dressing, antimicrobial, mouthwash well in treatment dysentery, diarrhea, skin diseases, etc. In this review, core idea to present antifungal potential selected medicinal plant its secondary metabolites against different fungal pathogens. Additionally, toxicological studies (safety profile) conducted on amazing A. are discussed for possible clinical development herb. Articles available from 2000 2020 were reviewed detail exhibit recent appraisals properties conyzoides. Efforts aimed at delivering evidences application by using globally recognized scientific search engines databases so that efficient approach filling lacunae research drugs can be adopted. After analyzing literature, it reported effectively suppressed growth numerous species, such Aspergillus, Alternaria, Candida, Fusarium, Phytophthora, Pythium, owing presence various metabolites, particularly chromenes, terpenoids, flavonoids coumarins. The mechanism action pathogens also briefly. However, was found only few have been performed demonstrate plant’s dosage safety profile humans. Considered all together, extract constituents may act promising biosource effective formulations use. order establish efficacy, additional required explore chronic effects ageratum, determine probability interactions when used with herbs, identify safe dosage. particulars presented here not bridge gap but furnish future strategies investigators microbiology, ethno-pharmacology, drug discovery.

Язык: Английский

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Aqueous and Ethanolic Plant Extracts as Bio-Insecticides—Establishing a Bridge between Raw Scientific Data and Practical Reality

Plants, Год журнала: 2021, Номер 10(5), С. 920 - 920

Опубликована: Май 4, 2021

Global demand for food production is causing pressure to produce faster and bigger crop yields, leading a rampant use of synthetical pesticides. To combat the nefarious consequences its uses, search effective alternatives began in last decades currently ongoing. Nature seen as main source answers protection problems, supported by several examples plants/extracts used this purpose traditional agriculture. The literature reviewed allowed identification 95 plants whose extracts exhibit insecticide activity can be bio-pesticides contributing sustainable option ethanol and/or water more environmentally friendly resorts easily accessible solvents, which reproduced farmers themselves. This enables bridge established between raw scientific data practical reality. Azadirachta indica, Capsicum annuum, Nicotiana tabacum Tagetes erecta are most researched have potential viable options pest management approach. indica showed promising results Brevicoryne brassicae was targeted species, being tested against aqueous ethanolic 23 different plants. Maceration using dried material (usually leaves) extraction method preferred majority authors.

Язык: Английский

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Current Status of the Main Olive Pests: Useful Integrated Pest Management Strategies and Genetic Tools

Applied Sciences, Год журнала: 2023, Номер 13(21), С. 12078 - 12078

Опубликована: Ноя. 6, 2023

Mediterranean olive cultivation faces challenges in the global environmental change context. Pests and diseases caused by arthropods such as Bactrocera oleae, Prays certain vectors of Xylella fastidiosa are expected to increase spread part due this scenario. The control these has relied on synthetic pesticides, misuse which led pest population resistance concerns about their negative impacts biodiversity health. Integrated management (IPM) methods have emerged through careful consideration all available techniques subsequent integration appropriate measures that discourage development populations. This paper reviews IPM guidelines for cultivation, prioritizing use biological methods, genetics biotechnology, bring precision, efficacy, safety. It evidences importance genetic analysis populations, pesticide contributions predators control. Advances formulations delivery systems pesticides Bacillus thuringiensis, plant-incorporated protectants, improved SIT techniques, specific efficacy biologicals covered. Finally, explores promising tools RNAi gene drive while recognizing ethical, environmental, regulatory associated with use. Shortly, innovations potential reduce pests ensuring long-term viability industry.

Язык: Английский

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Chemical Composition, Phytotoxic, Antimicrobial and Insecticidal Activity of the Essential Oils of Dracocephalum integrifolium

Toxins, Год журнала: 2019, Номер 11(10), С. 598 - 598

Опубликована: Окт. 13, 2019

The present investigation studied the chemical composition of essential oils extracted from Dracocephalum integrifolium Bunge growing in three different localities northwest China and evaluated phytotoxic, antimicrobial insecticidal activities as well their major constituents, i.e., sabinene eucalyptol. GC/MS analysis revealed presence 21–24 compounds oils, representing 94.17–97.71% entire oils. Monoterpenes were most abundant substances, accounting for 85.30–93.61% oils; among them, (7.35–14.0%) eucalyptol (53.56–76.11%) dominant all which occupied 67.56–83.46% total In general, phytotoxic bioassays indicated that IC50 values constituents below 2 μL/mL (1.739–1.886 mg/mL) against Amaranthus retroflexus Poa annua. Disc diffusion method demonstrated possessed activity Bacillus subtilis, Pseudomonas aeruginosa, Escherichia coli, Saccharomyces cerevisiae, Candida albicans, with MIC ranging 5–40 (4.347–37.712 mg/mL). also exhibited significant pesticidal activity, mortality rates Aphis pomi reaching 100% after exposing to 10 μL oil/petri dish (8.694–9.428 mg/petri dish) 24 h. To best our knowledge, this is first report on composition, D. integrifolium; it noteworthy mention phytotoxicity one sabinene. Our results imply have potential value being further exploited natural pesticides.

Язык: Английский

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Plants in the Genus Tephrosia: Valuable Resources for Botanical Insecticides

Insects, Год журнала: 2020, Номер 11(10), С. 721 - 721

Опубликована: Окт. 21, 2020

Synthetic insecticides are effective in controlling insect pests but can also harm nontarget organisms and the environment. During last 40 years, there has been an increasing interest alternative insecticides, particularly those derived from plants, commonly known as botanical insecticides. However, commercially available remain limited. Rotenone is one of earliest identified compounds was used fish poison pest management. Due to its link with Parkinson disease, use rotenone banned many developed countries. be isolated Derris spp. Lonchocarpus spp., it Tephrosia species. In this article, we present basic information on selected species their major related insecticidal activities highlight current extracts some species, vogelii particular, for control stored grains crop production. The crude contain multiple bioactive compounds, mainly rotenone, deguelin, rotenolone, tephrosin, which act either additive or synergistic fashion, resulting pests. There about 400 genus Tephrosia, even strains variants vary greatly these active compounds. We argue that a systematic evaluation different needed, high should sustainable

Язык: Английский

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Updated assessment of potential biopesticide options for managing fall armyworm (Spodoptera frugiperda) in Africa

Journal of Applied Entomology, Год журнала: 2021, Номер 145(5), С. 384 - 393

Опубликована: Янв. 18, 2021

Abstract The fall armyworm (FAW, Spodoptera frugiperda ) has recently spread to many countries in Africa, the Near East, Asia and Pacific. In sub‐Saharan Africa (SSA), more than 300 million people depend on FAW’s preferred host plant, maize, as a staple crop. Hence, of FAW SSA potential negatively affect livelihoods food security. Many farmers have responded by increasing their use synthetic pesticides, but these are not always used safely or effectively. More information sustainable alternatives high‐risk pesticides is needed inform decisions policy makers. previous paper, authors this need identifying fifty biopesticides which had been registered for management one 30 FAWs native region Africa. For each biopesticide identified, detailed profiles with efficacy against FAW; associated human health environmental hazards; agronomic sustainability; whether they practical smallholder were developed Research development (R4D) efforts ongoing management. study assessed current state knowledge documented how gaps filled (or not) since paper was published. found that there growing body field increased availability commercialized products. They also note remaining gaps, particularly compatibility other recommended practices, cost‐benefit analyses, important developing implementing IPM. An updated list priority research, promotion provided.

Язык: Английский

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Botanical Pesticides for an Eco-Friendly and Sustainable Agriculture: New Challenges and Prospects

Springer eBooks, Год журнала: 2021, Номер unknown, С. 69 - 96

Опубликована: Окт. 20, 2021

Язык: Английский

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Revitalizing indigenous ways of maintaining food security in a changing climate: review of the evidence base from Africa

International Journal of Climate Change Strategies and Management, Год журнала: 2022, Номер 14(3), С. 252 - 271

Опубликована: Апрель 1, 2022

Purpose Against a milieu of fragmented research that documents indigenous practices related to food security, and the heterogeneous settings from which studies have been conducted, this study aims synthesize evidence knowledge-food security nexus strengthen call for revitalization knowledge (IK) as part mechanisms manage challenges being aggravated by climate change. Design/methodology/approach Drawing on insights sub-Saharan Africa (SSA), reviews 122 articles accessed Web Science Scopus databases, covered methods used producing, gathering, processing, preserving storing diverse sources people deploy in securing their systems. Findings The surge attention focus IK-food tends be influenced growing acknowledgement change impacts Essentially, IK-based adopted address all four pillars are specified Food Agricultural Organization (FAO) availability, accessibility, utilization stability. main motivation behind continued use ways relates largely interest secure against climatic shocks partly desire maintain people’s cultures sovereignty. Originality/value This deploys provided FAO (2012) demonstrate management capable addressing dimensions, critical observation toward revitalizing IK managing intensified SSA.

Язык: Английский

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Methyl Benzoate as a Promising, Environmentally Safe Insecticide: Current Status and Future Perspectives

Agriculture, Год журнала: 2022, Номер 12(3), С. 378 - 378

Опубликована: Март 8, 2022

The widespread use of synthetic chemical pesticides beginning in the late 1930s has contributed to development insecticide resistance many important species pest insects and plants. Recent trends pesticide have emphasized more environmentally benign control methods that take into consideration environmental, food safety, human health. Biopesticides (e.g., naturally occurring pesticidal compounds) are alternative management tools normally no negative impact on health or environment. Here we review methyl benzoate, a relatively new botanical occurs as metabolite plants, whose odor is an attractant some insects. Since 2016, studies shown benzoate effective against range different agricultural, stored product, urban insect pests. Methyl several modes action, including contact toxicant, fumigant, ovicidal toxin, oviposition deterrent, repellent, attractant. In this review, summarize various action its toxicity potential kinds arthropods, agricultural pests their natural enemies, pollinators. We conclude very promising candidate for integrated under either greenhouse field conditions.

Язык: Английский

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Extracts of Common Pesticidal Plants Increase Plant Growth and Yield in Common Bean Plants

Plants, Год журнала: 2020, Номер 9(2), С. 149 - 149

Опубликована: Янв. 23, 2020

Common bean (Phaseolus vulgaris) is an important food and cash crop in many countries. Bean yields sub-Saharan Africa are on average 50% lower than the global average, which largely due to severe problems with pests diseases as well poor soil fertility exacerbated by low-input smallholder production systems. Recent on-farm research eastern has shown that commonly available plants pesticidal properties can successfully manage arthropod pests. However, reducing common yield gaps still requires further sustainable solutions other provisioning services such plant nutrition. Smallholder farmers using have claimed application of extracts boosts growth, potentially through working a foliar fertiliser. Thus, aims presented here were determine whether growth could be enhanced metabolic processes induced used for pest control Africa. Extracts from Tephrosia vogelii Tithonia diversifolia prepared at concentration 10% w/v applied potted pest-free screen house sprays directly around evaluate their contribution potential changes primary or secondary metabolites. Outcomes this study showed significantly increased chlorophyll content, number pods per overall seed yield. Other increases metabolites observed, including rutin, phenylalanine tryptophan. The had similar effect commercially fertiliser whilst spray was better applying extract soil. These results suggest help overcome multiple limitations services, enhancing nutrition addition established uses management.

Язык: Английский

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