AUTHOR=bo Du h., rong li c.

TITLE=Study on the mechanism of peanut resistance to Fusarium oxysporum infection induced by Bacillus thuringiensis TG5

JOURNAL=Frontiers in Microbiology

VOLUME=14

YEAR=2024

URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2023.1251660

DOI=10.3389/fmicb.2023.1251660

ISSN=1664-302X

ABSTRACT=<p>Peanut <italic>root rot</italic>, commonly referred to as <italic>rat tail</italic> or <italic>root rot</italic>, is caused by a range of <italic>Fusarium</italic> species. A strain of bacteria (named TG5) was isolated from crop rhizosphere soil in Mount Taishan, Shandong Province, China, through whole genome sequencing that TG5 was identified as <italic>Bacillus thuringiensis</italic>, which can specifically produce chloramphenicol, bacitracin, clarithromycin, lichen VK<sub>21</sub>A<sub>1</sub> and bacitracin, with good biological control potential. Based on liquid chromatography tandem mass spectrometry metabonomics analysis and transcriptome conjoint analysis, the mechanism of TG5 and carbendazim inducing peanut plants to resist <italic>F. oxysporum</italic> stress was studied. In general, for peanut <italic>root rot</italic> caused by <italic>F. oxysporum</italic>, <italic>B. thuringiensis</italic> TG5 has greater advantages than carbendazim and is environmentally friendly. These findings provide new insights for peanut crop genetics and breeding, and for microbial pesticides to replace traditional highly toxic and highly polluting chemical pesticides. Based on the current background of agricultural green cycle and sustainable development, it has significant practical significance and broad application prospects.</p>