Trichoderma—a new strategy in combating agriculture problems

Amaresh, Y. S.; Chennappa, G.; Avinash, S.; Naik, M. K.; Sreenivasa, M. Y.

doi:10.1016/b978-0-12-818258-1.00015-7

Cited by 5 publications

(8 citation statements)

References 52 publications

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“…One of the most promising biological control agents is Trichoderma, which is widely distributed in different agricultural climates and is ubiquitous in soil and root ecosystems. With the characteristics of different types of biological controls and promoting plant growth, it is a powerful biological control weapon that can combat a variety of plant pathogens and can provide protection for sustainable production and management in agriculture [128]. Separated from agricultural soil, Klebsiella pneumonia strain BHC1 degrades 78% of imidacloprid within 7 days at 30 • C, and metabolites such as nitroguanidine, imidacloprid guanidine, and 6-chloronicotinic acid can be obtained [129].…”

Section: Degradation Of Imidacloprid By Microbial Strainsmentioning

confidence: 99%

Insights into the Toxicity and Degradation Mechanisms of Imidacloprid Via Physicochemical and Microbial Approaches

Pang

Lin

Zhang

et al. 2020

Toxics

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Imidacloprid is a neonicotinoid insecticide that has been widely used to control insect pests in agricultural fields for decades. It shows insecticidal activity mainly by blocking the normal conduction of the central nervous system in insects. However, in recent years, imidacloprid has been reported to be an emerging contaminant in all parts of the world, and has different toxic effects on a variety of non-target organisms, including human beings, due to its large-scale use. Hence, the removal of imidacloprid from the ecosystem has received widespread attention. Different remediation approaches have been studied to eliminate imidacloprid residues from the environment, such as oxidation, hydrolysis, adsorption, ultrasound, illumination, and biodegradation. In nature, microbial degradation is one of the most important processes controlling the fate of and transformation from imidacloprid use, and from an environmental point of view, it is the most promising means, as it is the most effective, least hazardous, and most environmentally friendly. To date, several imidacloprid-degrading microbes, including Bacillus, Pseudoxanthomonas, Mycobacterium, Rhizobium, Rhodococcus, and Stenotrophomonas, have been characterized for biodegradation. In addition, previous studies have found that many insects and microorganisms have developed resistance genes to and degradation enzymes of imidacloprid. Furthermore, the metabolites and degradation pathways of imidacloprid have been reported. However, reviews of the toxicity and degradation mechanisms of imidacloprid are rare. In this review, the toxicity and degradation mechanisms of imidacloprid are summarized in order to provide a theoretical and practical basis for the remediation of imidacloprid-contaminated environments.

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Section: Degradation Of Imidacloprid By Microbial Strainsmentioning

confidence: 99%

Insights into the Toxicity and Degradation Mechanisms of Imidacloprid Via Physicochemical and Microbial Approaches

Pang

Lin

Zhang

et al. 2020

Toxics

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“…Phytopathogenic fungi cause plant diseases that manifest as disfigurement, wilting, blotches and rotted tissue. These signs reduce commercial value and generate large losses in agricultural production [ 1 , 2 ]. The traditional strategy for fungal control consists of the application of synthetic fungicides and pesticides [ 1 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Peptaibol Production and Characterization from Trichoderma asperellum and Their Action as Biofungicide

Alfaro-Vargas¹,

Bastos-Salas

Muñoz-Arrieta³

et al. 2022

JoF

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Peptaibols (Paib), are a class of biologically active peptides isolated from soil, fungi and molds, which have interesting properties as antimicrobial agents. Paib production was optimized in flasks by adding sucrose as a carbon source, 2-aminoisobutyric acid (Aib) as an additive amino acid, and F. oxysporum cell debris as an elicitor. Paib were purified, sequenced and identified by High-performance liquid chromatography (HPLC)coupled to mass spectrometry. Afterward, a Paib extract was obtained from the optimized fermentations. The biological activity of these extracts was evaluated using in vitro and in vivo methods. The extract inhibited the growth of specific plant pathogens, and it showed inhibition rates similar to those from commercially available fungicides. Growth inhibition rates were 92.2, 74.2, 58.4 and 36.2% against Colletotrichum gloeosporioides, Botrytis cinerea, Alternaria alternata and Fusarium oxysporum, respectively. Furthermore, the antifungal activity was tested in tomatoes inoculated with A. alternata, the incidence of the disease in tomatoes treated with the extract was 0%, while the untreated fruit showed a 92.5% incidence of infection Scanning electron microscopy images showed structural differences between the fungi treated with or without Paib. The most visual alterations were sunk and shriveled morphology in spores, while the hyphae appeared to be fractured, rough and dehydrated.

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“…Phytopathogenic fungi cause plant diseases that manifest as disfigurement, wilting, blotches, and rotted tissue. These signs reduce commercial value and generate large losses in agricultural production [1,2]. The traditional strategy for fungal control consists in the application of synthetic fungicides and pesticides [1,3].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Some of the Paib produced by Trichoderma species include asperelins, alamethicins, trichokonins, trichorovins, trichotoxins, trilongins, brevicelsins, etc. but the production of more than 190 of these peptides has already been reported [2,13,14,27,[29][30][31][32][33]. Some Trichoderma strains are currently being used, and even commercialized, as biocontrollers because of their antimicrobial properties [6,9,29,[34][35][36].…”

Section: Introductionmentioning

confidence: 99%

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Peptaibol Production and Characterization from Trichoderma asperellum and their Action as Biofungicide

Alfaro-Vargas¹,

Bastos-Salas

Muñoz-Arrieta³

et al. 2022

Preprint

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Peptaibols (Paib), are a class of biologically active peptides isolated from soil, fungi and molds, which have interesting properties as antimicrobial agents. Paib production was optimized in flasks by adding sucrose as a carbon source, Aib as an additive amino acid, and F. oxysporum cell debris as an elicitor. Paib were purified, sequenced and identified by HPLC coupled to mass spectrometry. Af-terward, a Paib prototype was prepared with the extracts obtained from the optimized fermenta-tions. The biological activity of these prototypes was evaluated using in vitro and in vivo methods. The prototype inhibited the growth of specific plant pathogens, and it showed inhibition rates similar to those from commercially available fungicides. Growth inhibition rates were 92.2, 74.2, 58.4 and 36.2 % against Colletotrichum gloeosporioides, Botrytis cinerea, Alternaria alternata and Fusarium oxysporum, respectively. Furthermore, the antifungal activity was tested in tomatoes inoculated with A. alternata, the incidence of the disease in tomatoes treated with the prototype was 0%, while the untreated fruit showed a 92.5% of infection. Scanning electron microscopy images showed structural differences between fungi treated with or without Paib. The most visual altera-tions were sunk and shriveled morphology in spores, while the hyphae appeared to be fractured, rough, and dehydrated.

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Trichoderma—a new strategy in combating agriculture problems

Cited by 5 publications

References 52 publications

Insights into the Toxicity and Degradation Mechanisms of Imidacloprid Via Physicochemical and Microbial Approaches

Insights into the Toxicity and Degradation Mechanisms of Imidacloprid Via Physicochemical and Microbial Approaches

Peptaibol Production and Characterization from Trichoderma asperellum and Their Action as Biofungicide

Peptaibol Production and Characterization from Trichoderma asperellum and their Action as Biofungicide

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