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Título : Transcriptome analyses suggest that changes in fungal endophyte lifestyle could be involved in grapevine bud necrosis
Autor: Ribeiro, Thales Henrique Cherubino
Brum, Christiane Noronha Fernandes
Souza, Claudia Rita de
Dias, Frederico Alcantara Novelli
Almeida Junior, Osmar de
Regina, Murilo de Albuquerque
Oliveira, Kellen Kauanne Pimenta de
Reis, Gabriel Lasmar dos
Oliveira, Larissa Maia
Fernandes, Fernanda de Paula
Torregrosa, Laurent
Souza, Jorge Teodoro de
Chalfun Junior, Antonio
Palavras-chave: Grapevine - Diseases
Double pruning management
RNA-seq libraries
Alternaria alternata
Videira - Doenças e pragas
Videira - Dupla poda
Necrose da gema
Microrganismos endofíticos
Publicador: Springer Nature
Data da publicação: Jun-2020
Referência: RIBEIRO, T. H. C. et al. Transcriptome analyses suggest that changes in fungal endophyte lifestyle could be involved in grapevine bud necrosis. Scientific Reports, [S. I.], v. 10, 2020. DOI:
Abstract: Bud necrosis (BN) is a common disorder that affects Vitis vinifera L. and reduces its potential yield. To minimize the losses caused by BN, the double pruning management was applied in Brazilian Southeast vineyards. In this management strategy plants are pruned at the winter to promote a vegetative cycle and then, at summer, to promote the reproductive cycle at optimal environmental conditions. To investigate the relationship of BN and the double pruning management RNA-seq libraries were sequenced from healthy and necrotic tissues at four different stages of the year. The comparison of differentially expressed genes in necrotic and non-necrotic tissues showed an enhanced expression of genes related to cell death possibly induced by endophytic microorganisms in the necrotic tissues. The de novo assembly, characterization and quantification of transcripts within the RNA-seq libraries showed that genes from the endophytic fungus Alternaria alternata, responsible for the production of toxic compounds were highly expressed under BN. Here we propose a model in which unfavorable conditions and reduced carbohydrate levels in buds can promote the switch from a biotrophic lifestyle to a necrotrophic lifestyle in the endophytic fungi, which seems to be involved in the development of BN.
Idioma: en
Aparece nas coleções:DBI - Artigos publicados em periódicos

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