Data/hora: 10/06/2024 03:58:37

Biblioteca(s): | Embrapa Agricultura Digital; Embrapa Amazônia Ocidental.
Data corrente: | 28/08/2023
Data da última atualização: | 06/09/2023
Autoria: | SOUSA, T. F.; REÇA, B. N. P. V.; CASTRO, G. S.; SILVA, I. J. S. da; CANIATO, F. F.; JÚNIOR, M. B. de A.; YAMAGISHI, M. E. B.; KOOLEN, H. H. F.; BATAGLION, G. A.; HANADA, R. E.; SILVA, G. F. da.
Afiliação: | THIAGO FERNANDES SOUSA, UNIVERSIDADE FEDERAL DO AMAZONAS; BRUNA NAYARA PANTOJA VIEIRA REÇA, INSTITUTO NACIONAL DE PESQUISAS DA AMAZÔNIA; GLEUCINEI SANTOS CASTRO, UNIVERSIDADE DO ESTADO DO AMAZONAS; INGRIDE JARLINE SANTOS DA SILVA, UNIVERSIDADE FEDERAL DO AMAZONAS; FERNANDA FÁTIMA CANIATO, UNIVERSIDADE FEDERAL DO AMAZONAS; MOYSÉS BATISTA DE ARAÚJO JÚNIOR, UNIVERSIDADE FEDERAL DO AMAZONAS; MICHEL EDUARDO BELEZA YAMAGISHI, CNPTIA; HECTOR HENRIQUE FERREIRA KOOLEN, UNIVERSIDADE FEDERAL DO AMAZONAS; GIOVANA ANCESKI BATAGLION, UNIVERSIDADE FEDERAL DO AMAZONAS; ROGÉRIO EIJI HANADA, INSTITUTO NACIONAL DE PESQUISAS DA AMAZÔNIA; GILVAN FERREIRA DA SILVA, CPAA.
Título: | Trichoderma agriamazonicum sp. nov. (Hypocreaceae), a new ally in the control of phytopathogens.
Ano de publicação: | 2023
Fonte/Imprenta: | Microbiological Research, v. 275, 127469, Oct. 2023.
ISSN: | 1618-0623
DOI: | https://doi.org/10.1016/j.micres.2023.127469
Idioma: | Inglês
Conteúdo: | Abstract. The genus Trichoderma comprises more than 500 valid species and is commonly used in agriculture for the control of plant diseases. In the present study, a Trichoderma species isolated from Scleronema micranthum (Malvaceae) has been extensively characterized and the morphological and phylogenetic data support the proposition of a new fungal species herein named Trichoderma agriamazonicum. This species inhibited the mycelial growth of all the nine phytopathogens tested both by mycoparasitism and by the production of VOCs, with a highlight for the inhibition of Corynespora cassiicola and Colletotrichum spp. The VOCs produced by T. agriamazonicum were able to control Capsicum chinense fruit rot caused by Colletotrichum scovillei and no symptoms were observed after seven days of phytopathogen inoculation. GC-MS revealed the production of mainly 6-amyl-?-pyrone, 1-octen-3-ol and 3-octanone during interaction with C. scovillei in C. chinense fruit. The HLPC-MS/MS analysis allowed us to annotate trikoningin KBII, hypocrenone C, 5-hydroxy-de-O-methyllasiodiplodin and unprecedented 7-mer peptaibols and lipopeptaibols. Comparative genomic analysis of five related Trichoderma species reveals a high number of proteins shared only with T. koningiopsis, mainly the enzymes related to oxidative stress. Regarding the CAZyme composition, T. agriamazonicum is most closely related to T. atroviride. A high protein copy number related to lignin and chitin degradation is observed for all Trichoderma spp. analyzed, while the presence of licheninase GH12 was observed only in T. agriamazonicum. Genome mining analysis identified 33 biosynthetic gene clusters (BGCs) of which 27 are new or uncharacterized, and the main BGCs are related to the production of polyketides. These results demonstrate the potential of this newly described species for agriculture and biotechnology.
Palavras-Chave: | Amazon fungi; Biocontrol; Biocontrole; Fitopatógenos; Fungos amazônicos; Peptaibols; Peptídeos antibióticos; Phytopathogens; Post-harvest; Trichoderma agriamazonicum.
Thesagro: | Agricultura; Pós-Colheita.
Thesaurus Nal: | Agriculture; Hypocreaceae.
Categoria do assunto: | --
Registro original: | Embrapa Agricultura Digital (CNPTIA)

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