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Trichoderma harzianum

About: Trichoderma harzianum is a research topic. Over the lifetime, 4731 publications have been published within this topic receiving 96796 citations.


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Journal ArticleDOI
TL;DR: Evaluated biocontrol agents under controlled and field conditions for their efficacy against the pathogen and to detect and quantify the reduction in FOC population revealed Fusarium population was reduced to 0.58 OD in 7 months in G. mosseae and T. harzianum treatment.
Abstract: Panama wilt of banana caused by Fusarium oxysporum f. sp. cubense (race 1) is a serious disease devastating the important cultivar Neypoovan (syn Elakki Bale AB) in southern India. Chemical control methods are not very effective in controlling the disease. The objective of this study was to evaluate biocontrol agents (BCAs) under controlled and field conditions for their efficacy against the pathogen and to detect and quantify the reduction in FOC population. Arbuscular mycorrhizal (AM) fungi, Trichoderma harzianum and Pseudomonas fluorescens were inoculated at the time of planting in single, dual and tripartite combinations allowing colonization up to 0, 45 and 90 days. Plants were challenged thereafter with 50 g of FOC inoculum multiplied on sorghum grains containing 1.5×106 cfu g−1. Uninoculated plants and those inoculated with pathogen only were controls. Plant growth parameters were measured and structural modifications in the roots were studied. FOC populations in the roots were determined ...

36 citations

Journal Article
TL;DR: In conclusion, both of the tested Trichoderma spp.
Abstract: Present study was aimed to determine in vitro antagonistic efficacy of two different species of Trichoderma and nine different species of Bacillus against tomato damping off causing fungi Pythium aphanidermatum. Different types of assays were carried out with Trichoderma spp., in all tests they revealed growth inhibition on P. aphanidermatum. In dual culture assay and assay for volatile metabolites, Trichoderma harzianum revealed significantly (P <0.05) higher inhibition on tested pathogen, but in assay for nonvolatile metabolites Trichoderma viride showed higher inhibition. Interestingly, assay for nonvolatile metabolites of P. aphanidermatum demonstrated growth induction on both of the tested Trichoderma spp. The extracted metabolites of Trichoderma spp. showed growth inhibition on P. aphanidermatum even at 10,000 times dilution. Out of tested nine Bacillus species, four revealed antagonistic effect on tested pathogen, B. polymyxa showed significantly (P < 0.05) higher effect at 48 hours incubation. In conclusion, both of the tested Trichoderma spp. and B. thracis, B. circulans and B. polymyxa and B. sphaericus have antagonistic effect on P. aphanidermatum. Therefore, these microbes can be used for further greenhouse and field studies to confirm the feasibility of using in tomato damping off disease management.

36 citations

Journal Article
TL;DR: Results of this study indicated that B. subtillis and T. harzianum effectively suppress the Fusarium wilt and increasing the protein content and beta-1, 3-glucnase enzyme activity might have contributed to inducing systemic resistance after treatment with bio-control agents.
Abstract: We studied the effect of Bacillus subtillis and Trichoderma harzianum Rifai, in commercial formulations, alone or in mixture, on soluble protein content, beta-1, 3-glucnase enzyme activity and suppression of Fusarium wilt disease caused by Fusarium oxysporum f.sp ciceris in Hashem and Pirooz chickpea cultivars. Experiment was conducted in a factorial experiment based on randomized complete design with three replications under controlled greenhouse condition with aggressive isolate of F. oxysporum f.sp ciceris and B. subtillis, T. harzianum treatments in liquid and seed coating inoculation methods. Disease severity was significantly reduced by B. subtillis, T. harzianum and their mixtures (about 40%). Although the combination of these bio-control agents was effective in controlling Fusarium wilt disease but did not differ significantly from bio-control treatments individually. Hashem cultivar exhibited significantly higher level of resistance compared to Pirooz cultivar after inoculation with bio-control agents. Significantly higher levels of soluble protein content and beta-1, 3-glucnase activity was observed in chickpea cultivars after inoculation with B. subtillis, T. harzianum compared to control. Hashem cultivar exhibited significantly higher levels of soluble protein content and beta-1, 3-glucnase activity in compared to Pirooz cultivar, which apparently associated with establishment higher level of resistance to Fusarium wilt. Results of this study indicated that B. subtillis and T. harzianum effectively suppress the Fusarium wilt and increasing the protein content and beta-1, 3-glucnase enzyme activity might have contributed to inducing systemic resistance after treatment with bio-control agents. Application of B. subtilis and T. harzianum either singly or in combination in both seed and liquid inoculation methods protect chickpea from F. oxysporum f.sp ciceris infection indicating that the importance of application of biocontrol agents.

36 citations

Journal ArticleDOI
TL;DR: Results demonstrate that the combination of citrus compost and T.harzianum T-78 can be a viable alternative to peat and can minimise the application of chemicals necessary to control Fusarium wilt in greenhouse nurseries for melon seedling production.

36 citations

Journal ArticleDOI
18 Feb 2014
TL;DR: The transcriptome of T. harzianum IOC-3844 was analyzed using RNA-seq technology and identified a set of carbohydrate-active enzymes that are upregulated under different conditions, contributing to a better understanding of the role of the genes that are involved in this process.
Abstract: Profiling the transcriptome that underlies biomass degradation by the fungus Trichoderma harzianum allows the identification of gene sequences with potential application in enzymatic hydrolysis processing. In the present study, the transcriptome of T. harzianum IOC-3844 was analyzed using RNA-seq technology. The sequencing generated 14.7 Gbp for downstream analyses. De novo assembly resulted in 32,396 contigs, which were submitted for identification and classified according to their identities. This analysis allowed us to define a principal set of T. harzianum genes that are involved in the degradation of cellulose and hemicellulose and the accessory genes that are involved in the depolymerization of biomass. An additional analysis of expression levels identified a set of carbohydrate-active enzymes that are upregulated under different conditions. The present study provides valuable information for future studies on biomass degradation and contributes to a better understanding of the role of the genes that are involved in this process.

36 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023163
2022383
2021200
2020254
2019251
2018228