Potential biocontrol efficiency of Trichoderma species against oomycete pathogens

Liu, Yinglong; He, Ping; Munir, Shahzad; Ahmed, Ayesha; Wu, Yixin; Yang, Yunxia; Lu, Jincheng; Wang, Jiansong; Yang, Jianping; Pan, Xinlong; Tian, Yangyang; He, Yueqiu

doi:10.3389/fmicb.2022.974024

Cited by 18 publications

(13 citation statements)

References 48 publications

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“…Trichoderma was initially isolated from soil in 1974 and has since proven to be a recognized biocontrol asset [16]. This research aligns with previous findings indicating that Trichoderma spp.…”

Section: In Vitro Antagonism Test Of P Palmivora By Trichoderma Sppsupporting

confidence: 88%

Exploring the antagonist potential of indigenous Trichoderma spp., Bacillus, and Pseudomonas against Phytophthora palmivora of Soe mandarin in East Nusa Tenggara, Indonesia

Simamora,

Hahuly,

Kana

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Phytophthora palmivora-induced root and basal stem rot pose a significant threat to the survival of Soe mandarin plants in East Nusa Tenggara Province, Indonesia. We isolated four Trichoderma species, five Bacillus, and 13 Pseudomonas isolates from the rhizosphere of healthy Soe mandarin. This study pursued two main objectives: (a) assessing the inhibitory capabilities of indigenous Trichoderma spp., Bacillus, and Pseudomonas towards P. palmivora in vitro, and (b) investigating the combined efficacy of Trichoderma spp., Bacillus, and Pseudomonas in controlling P. palmivora in a pot trial. Results revealed that four Trichoderma species (T. asperellum, T. hamatum, T. harzianum, and T. viride) significantly inhibited the growth of P. palmivora. Notably, T. asperellum exhibited the highest inhibition, at 84.31%, followed closely by T. harzianum (84.11%), T. viride (83.67%), and T. hamatum (80.28%). Bacillus and Pseudomonas exhibited varying levels of inhibition to P. palmivora growth in vitro, with the most substantial inhibition observed in Bacillus 1, followed by Pseudomonas 6. In the subsequent pot trial, the application of Trichoderma, Bacillus, or Pseudomonas, either individually or in combination, significantly increased the height increment and reduced the disease incidence caused by P. palmivora in Soe mandarin seedlings.

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Section: In Vitro Antagonism Test Of P Palmivora By Trichoderma Sppsupporting

confidence: 88%

Exploring the antagonist potential of indigenous Trichoderma spp., Bacillus, and Pseudomonas against Phytophthora palmivora of Soe mandarin in East Nusa Tenggara, Indonesia

Simamora,

Hahuly,

Kana

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Bacillus subtilis Tpb55 showed a promising controlling effect of 70.66% on TBS under pot experimental conditions ( Han et al., 2016 ). Trichoderma strains AR-4, Tv-1, and ST4-1 isolated from plant’s stems, roots, and rhizosphere soil showed a more than 60% effectiveness on TBS ( Liu et al., 2022 ). The mechanisms of action of the biological agents on TBS were also investigated.…”

Section: Introductionmentioning

confidence: 99%

Deciphering the rhizosphere bacteriome associated with biological control of tobacco black shank disease

Liu

et al. 2023

Front. Plant Sci.

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IntroductionThe black shank disease seriously affects the health of tobacco plants. Conventional control methods have limitations in terms of effectiveness or economic aspects and cause public health concerns. Thus, biological control methods have come into the field, and microorganisms play a key role in suppressing tobacco black shank disease.MethodsIn this study, we examined the impact of soil microbial community on black shank disease basing on the structural difference of bacterial communities in rhizosphere soils. We used Illumina sequencing to compare the bacterial community diversity and structure in different rhizosphere soil samples in terms of healthy tobacco, tobacco showing typical black shank symptoms, and tobacco treated with the biocontrol agent, Bacillus velezensis S719.ResultsWe found that Alphaproteobacteria in the biocontrol group, accounted for 27.2% of the ASVs, was the most abundant bacterial class among three groups. Heatmap and LEfSe analyses were done to determine the distinct bacterial genera in the three sample groups. For the healthy group, Pseudomonas was the most significant genus; for the diseased group, Stenotrophomonas exhibited the strongest enrichment trend, and Sphingomonas showed the highest linear discriminant analysis score, and was even more abundant than Bacillus; for the biocontrol group, Bacillus, and Gemmatimonas were the largely distributed genus. In addition, co-occurrence network analysis confirmed the abundance of taxa, and detected a recovery trend in the network topological parameters of the biocontrol group. Further functional prediction also provided a possible explanation for the bacterial community changes with related KEGG annotation terms.DiscussionThese findings will improve our knowledge of plant-microbe interactions and the application of biocontrol agents to improve plant fitness, and may contribute to the selection of biocontrol strains.

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“…Most of them produce effectors, which abolish or reduce plant defence responses against their attacks, and metabolites and enzymes, which degrade plant material, facilitating their penetration [ 138 ]. Numerous species of the genera Trichoderma and Paecilomyces have been reported to have fungicidal capacity against Phytophthora [ 72 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 ]. In the present study, the P. capsici and P. parasitica growth suppression effect of T .…”

Section: Discussionmentioning

confidence: 99%

Biocontrol of Diseases Caused by Phytophthora capsici and P. parasitica in Pepper Plants

Santos

Diánez

Sánchez-Montesinos

et al. 2023

JoF

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The main objective of this study was to evaluate the ability of Trichoderma aggressivum f. europaeum, T. longibrachiatum, Paecilomyces variotii, and T. saturnisporum as biological control agents (BCAs) against diseases caused by P. capsici and P. parasitica in pepper. For this purpose, their antagonistic activities were evaluated both in vitro and in vivo. We analysed the expression patterns of five defence related genes, CaBGLU, CaRGA1, CaBPR1, CaPTI1, and CaSAR8.2, in leaves. All BCAs showed a high in vitro antagonistic activity, significantly reducing the mycelial growth of P. capsici and P. parasitica. The treatments with T. aggressivum f. europaeum, T. longibrachiatum, and P. variotii substantially reduced the severity of the disease caused by P. capsici by 54, 76, and 70%, respectively, and of the disease caused by P. parasitica by 66, 55, and 64%, respectively. T. saturnisporum had the lowest values of disease reduction. Reinoculation with the four BCAs increased the control of both plant pathogens. Markedly different expression patterns were observed in the genes CaBGLU, CaRGA1, and CaSAR8.2. Based on the results, all four BCAs under study could be used as a biological alternative to chemicals for the control of P. capsici and P. parasitica in pepper with a high success rate.

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Potential biocontrol efficiency of Trichoderma species against oomycete pathogens

Cited by 18 publications

References 48 publications

Exploring the antagonist potential of indigenous Trichoderma spp., Bacillus, and Pseudomonas against Phytophthora palmivora of Soe mandarin in East Nusa Tenggara, Indonesia

Exploring the antagonist potential of indigenous Trichoderma spp., Bacillus, and Pseudomonas against Phytophthora palmivora of Soe mandarin in East Nusa Tenggara, Indonesia

Deciphering the rhizosphere bacteriome associated with biological control of tobacco black shank disease

Biocontrol of Diseases Caused by Phytophthora capsici and P. parasitica in Pepper Plants

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