Silicon Controls Bacterial Wilt Disease in Tomato Plants and Inhibits the Virulence-Related Gene Expression of Ralstonia solanacearum.

ABSTRACT: Silicon (Si) has a multifunctional role in improving plant growth and enhancing plant disease resistance, but its mechanisms are not fully understood. In this study, we investigated the impacts of silicon application on the control of bacterial wilt and elucidated the molecular mechanisms using transcriptome sequencing. Compared to non-Si treatment, Si application (0.5-2 mM) significantly reduces tomato bacterial wilt index by 46.31-72.23%. However, Si does not influence the growth of R. solanacearum. Si application negatively influences R. solanacearum exopolysaccharide (EPS) synthesis and biofilm formation. Transcriptome analysis showed that Si treatment significantly downregulates the expression of virulence genes' transcriptional regulator (xpsR), EPS synthesis-rel

SUBMITTER: Wang L 

PROVIDER: S-EPMC9266643 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature