A Volatile Producing Bacillus Subtilis Strain From the Rhizosphere of Haloxylon Ammodendron Promotes Plant Root Development
October 2022
in “
Research Square (Research Square)
”
TLDR The conclusion is that certain chemicals from Bacillus subtilis help improve plant root growth through a hormone-related process.
The study investigated the effects of volatile compounds (VCs) produced by Bacillus subtilis strain WM13-24, isolated from the rhizosphere of Haloxylon ammodendron, on plant root development. It was found that these VCs, specifically 2, 3-butanediol and benzyl alcohol, could promote growth in Arabidopsis and its host plant by stimulating lateral root formation and root hair growth. The research utilized Arabidopsis mutants with defects in hormone signaling pathways to determine that auxin signaling and transport are crucial for the root development changes induced by WM13-24. The VCs were identified using solid-phase microextraction gas chromatography-mass spectrometry (SPME-GC-MS), and the plant growth responses to these compounds were found to be concentration-dependent. The conclusion is that the VCs from Bacillus subtilis strain WM13-24 enhance root development through auxin signaling pathways.
