Microbial biopesticides: Current status and advancement for sustainable agriculture and environment

Thakur, Neelam; Kaur, Simranjeet; Tomar, Preety; Thakur, Sangeeta; Yadav, Ajar Nath

doi:10.1016/b978-0-12-820526-6.00016-6

Cited by 109 publications

(48 citation statements)

References 140 publications

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“…In India, the legislation for synthetic pesticides is the same as for biopesticides and is governed under the Insecticides Act (1968). The Central Insecticides Board (CIB) and the Registration Committee (RC) work under this Act as powerful bodies to regulate biopesticides [ 46 ]. In Brazil, the Decree 6.913 of 23 July 2009 referred for the first time to the term biopesticide as a phytosanitary product.…”

Section: European and International Regulations On The Use Of Biostimulants And Biopesticidesmentioning

confidence: 99%

Culturable Yeasts as Biofertilizers and Biopesticides for a Sustainable Agriculture: A Comprehensive Review

Hernández-Fernández

Cordero-Bueso

Ruíz-Muñoz

et al. 2021

Plants

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The extensive use of synthetic fertilizers and pesticides has negative consequences in terms of soil microbial biodiversity and environmental contamination. Faced with this growing concern, a proposed alternative agricultural method is the use of microorganisms as biofertilizers. Many works have been focused on bacteria, but the limited literature on yeasts and their potential ability to safely promote plant growth is gaining particular attention in recent years. Thus, the objective of this review is to highlight the application of yeasts as biological agents in different sectors of sustainable agricultural practices through direct or indirect mechanisms of action. Direct mechanisms include the ability of yeasts to provide soluble nutrients to plants, produce organic acids and phytohormones (indole-3-acetic acid). Indirect mechanisms involve the ability for yeasts to act as biocontrol agents through their high antifungal activity and lower insecticidal and herbicidal activity, and as soil bioremediating agents. They also act as protective agents against extreme environmental factors by activating defense mechanisms. It is evident that all the aspects that yeasts offer could be useful in the creation of quality biofertilizers and biopesticides. Hence, extensive research on yeasts could be promising and potentially provide an environmentally friendly solution to the increased crop production that will be required with a growing population.

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Section: European and International Regulations On The Use Of Biostimulants And Biopesticidesmentioning

confidence: 99%

Culturable Yeasts as Biofertilizers and Biopesticides for a Sustainable Agriculture: A Comprehensive Review

Hernández-Fernández

Cordero-Bueso

Ruíz-Muñoz

et al. 2021

Plants

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“…However, Bt -based insecticides have a low stability due to low resistance to various biotic and abiotic factors. This may lead to the need for repeated treatments or an increase in doses of bioinsecticides [ 12 ]. In addition to low stability, Bt -bioinsecticides have another significant drawback in the resistance of late-instar CPB larvae.…”

Section: Introductionmentioning

confidence: 99%

Influence of Bacillus thuringiensis and avermectins on gut physiology and microbiota in Colorado potato beetle: Impact of enterobacteria on susceptibility to insecticides

et al. 2021

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Gut physiology and the bacterial community play crucial roles in insect susceptibility to infections and insecticides. Interactions among Colorado potato beetle Leptinotarsa decemlineata (Say), its bacterial associates, pathogens and xenobiotics have been insufficiently studied. In this paper, we present our study of the survival, midgut histopathology, activity of digestive enzymes and bacterial communities of L. decemlineata larvae under the influence of Bacillus thuringiensis var. tenebrionis (morrissoni) (Bt), a natural complex of avermectins and a combination of both agents. Moreover, we estimated the impact of culturable enterobacteria on the susceptibility of the larvae to Bt and avermectins. An additive effect between Bt and avermectins was established regarding the mortality of the larvae. Both agents led to the destruction of midgut tissues, a decrease in the activity of alpha-amylases and alkaline proteinases, a decrease in the Spiroplasma leptinotarsae relative abundance and a strong elevation of Enterobacteriaceae abundance in the midgut. Moreover, an elevation of the enterobacterial CFU count was observed under the influence of Bt and avermectins, and the greatest enhancement was observed after combined treatment. Insects pretreated with antibiotics were less susceptible to Bt and avermectins, but reintroduction of the predominant enterobacteria Enterobacter ludwigii, Citrobacter freundii and Serratia marcescens increased susceptibility to both agents. We suggest that enterobacteria play an important role in the acceleration of Bt infection and avermectin toxicoses in L. decemlineata and that the additive effect between Bt and avermectin may be mediated by alterations in the bacterial community.

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“…Biosurfactants can be used on a large scale to improve the quality of agricultural land through soil restoration. These biomolecules could replace the harmful chemical surfactant currently used in the million dollar pesticide industry [31,32]. Therefore, the study of biosurfactants from ecological isolates is compulsory in order to investigate their vital role in plant growth stimulation and control of phytopathogenic microorganisms.…”

Section: Figmentioning

confidence: 99%

Microbial biotechnology for bio-prospecting of microbial bioactive compounds and secondary metabolites

Yadav¹

2021

J App Biol Biotech.

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Microbial biotechnology for bioprospecting of microbial bioactive compounds and secondary metabolites econdary metabolites and bioactive compounds produced by beneficial soil microbiomes, plant microbiomes and extremophilic microbiomes are of great significance for agriculture, industry and humans welfare. Microbial bioactive compounds and secondary metabolites are broadly used as active ingredients in medicine, in agriculture, and in food additives [1]. Metabolism is the amount of life-sustaining chemical transformations in the cells of organisms, and metabolic intermediates are called metabolites (small molecules). Among the metabolites, the primary microbial metabolite (Ethanol, amino acids and lactic acid) is necessary for growth, reproduction and development of organisms/ producer, whereas secondary metabolites (pigments and antibiotics) produced by microorganisms are useful for other living organisms for their enhanced metabolic processes [2, 3]. The microbial secondary metabolites are useful for human welfare as these metabolites are being used in diverse biological processes in agriculture, medicines, food industry, chemical industry and related fields. Archaea, bacteria and eukarya are three domain and microorganisms from these domain has been reported and characterized for production of potential low molecular weight natural substances and their uses in wide ranges of applications pharmaceuticals, food, agrochemical, and industries [4]. Considering the various studies of microbial bioactive compounds and secondary metabolites, it can be concluded that these microbes belongs to different phylum namely Rhodophyta,

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Microbial biopesticides: Current status and advancement for sustainable agriculture and environment

Cited by 109 publications

References 140 publications

Culturable Yeasts as Biofertilizers and Biopesticides for a Sustainable Agriculture: A Comprehensive Review

Culturable Yeasts as Biofertilizers and Biopesticides for a Sustainable Agriculture: A Comprehensive Review

Influence of Bacillus thuringiensis and avermectins on gut physiology and microbiota in Colorado potato beetle: Impact of enterobacteria on susceptibility to insecticides

Microbial biotechnology for bio-prospecting of microbial bioactive compounds and secondary metabolites

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