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This research aims to evaluate the effects of endophytic Bacillus strains on the growth of upland cotton and their underlying genetic mechanisms.

Bacillus altitudinis HNH7 and Bacillus velezensis HNH9 promote plant growth through upregulation of growth-promoting genes in upland cotton

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Randomized trial evaluates endophytic Bacillus strains to improve cotton plant growth, suggesting biofertilizer potential.

This research aims to evaluate the effects of endophytic Bacillus strains on the growth of upland cotton and their underlying genetic mechanisms.
Evaluated two Bacillus strains, HNH7 and HNH9, for growth-promoting traits in an in vitro plate assay.
Conducted a greenhouse experiment to assess the effects on upland cotton growth and gene expression.
Used PCR to confirm the presence of growth-promoting genes in the Bacillus strains.
Cotton treated with HNH7 showed significant upregulation of growth-linked genes like EXP6 and ARF1, enhancing plant growth.
HNH7 and HNH9 increased photosynthesis rate and stomatal conductance compared to control plants.
Gene expression analysis revealed downregulation of ethylene biosynthesis genes (ERF and ERF17) after Bacillus treatment.

Hasan et al. (2022) studied this question.

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