Ação antagonista &lt;i&gt;in vitro&lt;/i&gt; de &lt;i&gt;Trichoderma&lt;/i&gt; spp. sobre &lt;i&gt;Fusarium oxysporum&lt;/i&gt;

Quevedo, Alexsandra Cezimbra; Muniz, Marlove Fátima Brião; Savian, Lucas Graciolli; Sarzi, Janaina Silva; Saldanha, Mateus Alves

doi:10.5902/1980509868437

Cited by 3 publications

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“…are mycoparasites of many economically important plant pathogens [121,122]. For instance, Trichoderma strains are antagonists of the yerba mate root rot pathogen F. oxysporum [123] and parasitise R. solani hyphae to control citrus seedling wetness [121,124]. Fungi secrete secondary metabolites with antibiotic activity, including volatiles [125].…”

Section: Biocontrol Mechanisms Of Fungal Bcasmentioning

confidence: 99%

Modulation of the Host Defence System by Nematophagous Fungi and Chitosan

Berosich,

Lopez-Moya,

Lopez-Llorca

2024

Encyclopedia

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Nematophagous fungi (NFs), which are responsible for soil suppression of plant-parasitic nematodes, are multitrophic biocontrol agents. This raises the question of the transition between lifestyles (e.g., endophytism vs. egg parasitism). The NF Pochonia chlamydosporia colonises food crops and promotes their growth and yield. When colonising the plant, P. chlamydosporia induces the plant immunity (PI). However, it also evades the PI. To do this, both endophytic NF and pathogenic fungi (PF) secrete LysM effectors (LysM-effs). LysM effectors have been shown to have diverse functions in different organisms, including the protection of fungal chitin from plant chitinases. P. chlamydosporia is resistant to chitosan, which modulates gene expression in fungi and plants and has antimicrobial properties. P. chlamydosporia chitin deacetylases (CDA) and chitosanases (CSN) also help P. chlamydosporia evade plant immunity, resist exogenous chitosan, and are induced during fungal infection of nematode eggs. NF-chitosan formulations are new biomanagement tools against plant parasitic nematodes, fungal wilt pathogens and insect pests that currently threaten food security crops. Furthermore, omics techniques are useful tools to elucidate the role of CDAs, CSNs, LysM-effs, adhesion proteins and carbohydrate-active enzymes in pathogen–BCA–plant interactions, adhesion and infection to nematode eggs and their modulation by chitosan.

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