Plant Growth-Promoting Endophytic Bacillus Aryabhattai Triggers Novel Genes to Induce Plant Growth
Abstract Background: In nature, plants interact with a wide range of microorganisms. Most of these microorganisms have the ability to promote plant growth through the induction of important molecular pathways. The current work evaluated whether the endophytic bacterium Bacillus aryabhattai encourages plant growth and how transcriptional changes might be implicated in this effect.Results: The endophytic bacterium showed a significant effect on plant growth. Our results revealed that B. aryabhattai promotes the growth of Arabidopsis and tobacco plants. Notably, transcriptional changes in Arabidopsis plants treated with the bacterium were identified. Genes such as cinnamyl alcohol dehydrogenase, apyrase, thioredoxin H8, benzaldehyde dehydrogenase, indoleacetaldoxime dehydratase, berberine bridge enzyme-like and gibberellin-regulated protein were highly expressed. Additionally, endophytic bacterial genes such as arginine decarboxylase, D-hydantoinase, ATP synthase gamma chain and 2-hydroxyhexa-2,4-dienoate hydratase were activated during the interaction with Arabidopsis.Conclusions: The results show that new plant growth-related genes are induced during the interaction endophytic bacterium B. aryabhattai, and these changes may promote plant growth in sustainable agriculture.