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ORIGINAL RESEARCH article

Front. Plant Sci.
Sec. Plant Symbiotic Interactions
Volume 15 - 2024 | doi: 10.3389/fpls.2024.1432494
This article is part of the Research Topic Plant-microbes Interactions and Resistance Against Abiotic Stress View all 6 articles

Bacillus velezensis GH1-13 enhances drought tolerance in rice by reducing the accumulation of reactive oxygen species

Provisionally accepted
Dongryeol Park Dongryeol Park 1Jinwoo Jang Jinwoo Jang 1Deok Hyun Seo Deok Hyun Seo 1Yangseon Kim Yangseon Kim 2Geupil Jang Geupil Jang 1*
  • 1 School of Biological Sciences and Technology, Chonnam National University, Gwangju, Republic of Korea
  • 2 Department of Research and Development, Center for Industrialization of Agricultural and Livestock Microorganisms, Jeongeup, Republic of Korea

The final, formatted version of the article will be published soon.

    Plant growth-promoting rhizobacteria colonize the rhizosphere through dynamic and intricate interactions with plants, thereby providing various benefits and contributing to plant growth. Moreover, increasing evidence suggests that plant growth-promoting rhizobacteria affect plant tolerance to abiotic stress, but the underlying molecular mechanisms remain largely unknown. In this study, we investigated the effect of Bacillus velezensis strain GH1-13 on drought stress tolerance in rice. Phenotypical analysis, including the measurement of chlorophyll content and survival rate, showed that Bacillus velezensis GH1-13 enhances rice tolerance to drought stress. Additionally, visualizing ROS levels and quantifying the expression of ROS-scavenging genes revealed that GH1-13 treatment reduces ROS accumulation under drought stress by activating the expression of antioxidant genes. Furthermore, the GH1-13 treatment stimulated the jasmonic acid response, which is a key phytohormone that mediates plant stress tolerance. Together with the result that jasmonic acid treatment promotes the expression of antioxidant genes, these findings indicate that Bacillus velezensis GH1-13 improves drought tolerance in rice by reducing ROS accumulation and suggest that activation of the jasmonic acid response is deeply involved in this process.

    Keywords: abiotic stress, Bacillus velezensis, drought, Jasmonic acid, Reactive Oxygen Species, rice

    Received: 14 May 2024; Accepted: 30 Aug 2024.

    Copyright: © 2024 Park, Jang, Seo, Kim and Jang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Geupil Jang, School of Biological Sciences and Technology, Chonnam National University, Gwangju, Republic of Korea

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.