Nonpathogenic Pseudomonas syringae derivatives and its metabolites trigger the plant “cry for help” response to assemble disease suppressing and growth promoting rhizomicrobiome

Plants are capable of assembling beneficial rhizomicrobiomes through a "cry for help" mechanism upon pathogen infestation; however, it remains unknown whether we can use nonpathogenic strains to induce plants to assemble a rhizomicrobiome against pathogen invasion. Here, we used a series of derivatives of Pseudomonas syringae pv. tomato DC3000 to elicit different levels of the immune response to Arabidopsis and revealed that two nonpathogenic DC3000 derivatives induced the beneficial soil-borne legacy, demonstrating a similar "cry for help" triggering effect as the wild-type DC3000. In addition, an increase in the abundance of Devosia in the rhizosphere induced by the decreased root exudation of myristic acid…

• CA
  Chinese Academy of Sciences
• CA
  Chinese Academy of Agricultural Sciences

  Awards: CAAS-CSAL-202302, CAAS-ZDRW202308
• NK
  National Key Research and Development Program of China

  Awards: 2021YFF1000400, 2021YFD1900300, 2022YFF1001804
• AS
  Agricultural Science and Technology Innovation Program

  Award: CAAS-ZDRW202308