Responses of the sugarcane rhizosphere microbiota to different levels of water stress

Autor(es)

Pereira, Leticia Bianca ^[1] ; de Oliveira Gambarini, Victor Marques ^[2] ; de Menezes, Alexandre Barretto ^{[3, 4]} ; Ottoboni, Laura M. M. ^[1] ; Vicentini, Renato ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Ctr Mol Biol & Genet Engn, Lab Environm Mol Biol, Campinas, SP - Brazil

^[2] Univ Estadual Campinas, Dept Genet Evolut Microbiol & Immunol, Syst Biol Lab, Campinas, SP - Brazil

^[3] Natl Univ Ireland, Sch Nat Sci, Microbiol, Galway - Ireland

^[4] Natl Univ Ireland, Ryan Inst, Galway - Ireland

• Tipo de documento: Artigo Científico
• Fonte: APPLIED SOIL ECOLOGY; v. 159, MAR 2021.
• Citações Web of Science: 0

Resumo

The production of sugarcane, a globally important crop, is likely to be impacted by changes in climate including higher average temperatures and decreased rainfall in regions such as the northeast and southeast of Brazil. This metatranscriptome study investigated the effect of water stress on the micro-biota associated with the sugarcane rhizosphere, in order to obtain new information about plant-microbiota interactions and the ways that microorganisms could help plants to survive under adverse conditions. The results indicated that water stress increased the exudation of organic acids from the plant roots and changed the microbial gene expression in the rhizosphere. Decreased expression of genes related to growth and energy metabolism was mainly evident in samples submitted to eight days of water stress and was classified to the genera Sorangium and Rhodanobacter. Genes associated with functions such as flagella mobility, cell adhesion, and protein degradation showed increased expression in the same time period, with these transcripts classified to the genus Aequorivita. This genus also showed a positive correlation with the organic acids exuded by the plant. These results contribute to an understanding of the dynamics of the rhizosphere microbial community under normal and water stress conditions, indicating possible microbial groups that may play important roles in the maintenance of sugarcane under water stress. (AU)

• Processo FAPESP: 14/05929-0 - Impacto da elevada concentração de CO2 e do estresse hídrico na microbiota associada à rizosfera de cana-de-açúcar
• Beneficiário: Letícia Bianca Pereira
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 16/08994-3 - Análise do metatranscriptoma de rizosfera de cana-de-açúcar submetida ao estresse hídrico
• Beneficiário: Victor Marques de Oliveira Gambarini
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 15/00408-5 - Impacto da elevada concentração de CO2 e do estresse hídrico na microbiota associada à rizosfera de cana-de-açúcar
• Beneficiário: Renato Vicentini dos Santos
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Regular