Bacillus amyloliquefaciens Strain PMB05 Intensifies Plant Immune Responses to Confer Resistance Against Bacterial Wilt of Tomato

• DOI: 10.1094/phyto-01-20-0026-r
• Publication Date: 2020-07-21T14:25:28Z
• Authors: Ting-Hsin Ho; Chiao-Yu Chuang; Jing-Lin Zheng; Hong-Hua Chen; Yu-Shen Liang; Tzu-Pi Huang; Yi-Hsien Lin
• Keywords: Bacterial wilt; Ralstonia solanacearum; Bacillus amyloliquefaciens; Bacillus (shape); Bacterial disease; Callose; Strain (injury); Wilt disease

Tomato is an economic crop worldwide. Many limiting factors reduce the production of tomato, with bacterial wilt caused by Ralstonia solanacearum being most destructive disease. Our previous study showed that disease resistance to soft rot enhanced Bacillus amyloliquefaciens strain PMB05. This associated intensification pathogen-associated molecular patterns (PAMP)-triggered immunity (PTI). To determine whether PTI-intensifying spp. strains are able confer wilt, their effects on PTI signals triggered PAMP from R. and occurrence were assayed. Before assay, a gene encodes harpin solanacearum, PopW, was applied as PAMP. Results revealed B. PMB05 one among 9 rhizobacterial which could significantly intensify PopW-induced hypersensitive response (HR) Arabidopsis leaves. Moreover, we observed reactive oxygen species generation callose deposition increased, confirming intensified The PopW-triggered HR in reduced upon treatment inhibitors pathways. Furthermore, application tomato plants only use resulted increased wilt. also Taken together, demonstrated bacterium confers Screening plant intensifying rhizobacteria possible strategy control [Formula: see text] Copyright © 2020 Author(s). open access article distributed under CC BY-NC-ND 4.0 International license .