English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The biological control process mediated by microbes relies on multiple interactions among plants, pathogens and biocontrol agents (BCAs). One such efficient BCA is  Bacillus cereus  AR156, a bacterial strain that controls a broad spectrum of plant diseases and potentially works as a microbe elicitor of plant immune reactions. It remains unclear, however, whether the interaction between plants and  B. cereus  AR156 may facilitate composition changes of plant root exudates and whether these changes directly affect the growth of both plant pathogens and  B. cereus  AR156 itself. Here, we addressed these questions by analyzing the influences of root exudate changes mediated by  B. cereus  AR156 during biocontrol against tomato bacterial wilt caused by  Ralstonia solanacearum.  Indeed, some upregulated metabolites in tomato root exudates induced by  B. cereus  AR156 (REB), such as lactic acid and hexanoic acid, induced the growth and motile ability of  in vitro B. cereus  AR156 cells. Exogenously applying hexanoic acid and lactic acid to tomato plants showed positive biocontrol efficacy (46.6 and 39.36%) against tomato bacterial wilt, compared with 51.02% by  B. cereus  AR156 itself. Furthermore, fructose, lactic acid, sucrose and threonine at specific concentrations stimulated the biofilm formation of  B. cereus  AR156 in Luria-Bertan- Glycerol- Magnesium medium (LBGM), and we also detected more colonized cells of  B. cereus  AR156 on the tomato root surface after adding these four compounds to the system. These observations suggest that the ability of  B. cereus  AR156 to induce some specific components in plant root exudates was probably involved in further biocontrol processes.

Plant Root Exudates Are Involved in Bacillus cereus AR156 Mediated Biocontrol Against Ralstonia solanacearum