research A Volatile Producing Bacillus Subtilis Strain from the Rhizosphere of Haloxylon Ammodendron Promotes Plant Root Development 6 citations, February 2023 in “Plant and Soil” Bacillus subtilis strain WM13-24 helps plant root growth through volatile compounds.
research A Volatile Producing Bacillus Subtilis Strain From the Rhizosphere of Haloxylon Ammodendron Promotes Plant Root Development October 2022 in “Research Square (Research Square)” The conclusion is that certain chemicals from Bacillus subtilis help improve plant root growth through a hormone-related process.