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ORIGINAL RESEARCH article

Front. Plant Sci.
Sec. Plant Abiotic Stress
Volume 15 - 2024 | doi: 10.3389/fpls.2024.1416936
This article is part of the Research Topic Plant Stress – A Threat to Food Security View all 7 articles

Potassium indole-3-butyric acid affects rice's adaptability to salt stress by regulating carbon metabolism, TF gene expression, and biosynthesis of secondary metabolites

Provisionally accepted
Hang Zhou Hang Zhou 1Fengyan Meng Fengyan Meng 2Wenxin Jiang Wenxin Jiang 2Xutong Lu Xutong Lu 2Rui Zhang Rui Zhang 2Anqi Huang Anqi Huang 2Kunlun Wu Kunlun Wu 1Deng Peng Deng Peng 2Yaxin Wang Yaxin Wang 2Huimin Zhao Huimin Zhao 2You Wei Du You Wei Du 2Jingxin Huo Jingxin Huo 2Xiaole Du Xiaole Du 2Naijie Feng Naijie Feng 2Dianfeng Zheng Dianfeng Zheng 2*
  • 1 Hainan University, Haikou, Hainan Province, China
  • 2 Guangdong Ocean University, Zhanjiang, China

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

    Soil salinity pollution is increasing worldwide, seriously affecting plant growth and crop production. Existing reports on how IBAK regulates rice salt stress adaptation by affecting rice carbon metabolism, TF gene expression, and biosynthesis of secondary metabolites still have limitations. In this study, 40 mg•L -1 IBAK solution was sprayed on rice leaves at the seedling stage. The results showed that the IBAK application could promote shoot and root growth, decrease sucrose and fructose content, increase starch content, and enhance AI and NI activity, indicating altered carbon allocation.Furthermore, the expression of TF genes belonging to the ERF, WRKY, and bHLH families was influenced by IBAK. Many key genes (OsSSIIc, OsSHM1, and OsPPDKB) and metabolites (2-oxoglutaric acid, fumaric acid, and succinic acid) were up-regulated in the carbon metabolism pathway. In addition, this study highlighted the role of IBAK in regulating the biosynthesis of secondary metabolites pathway, potentially contributing to rice stress adaptability. The results of this study can provide new sustainable development solutions for agricultural production.

    Keywords: Potassium indole-3-butyrate, rice, Transcriptome, Metabolome, salt

    Received: 13 Apr 2024; Accepted: 13 Jun 2024.

    Copyright: © 2024 Zhou, Meng, Jiang, Lu, Zhang, Huang, Wu, Peng, Wang, Zhao, Du, Huo, Du, Feng and Zheng. 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: Dianfeng Zheng, Guangdong Ocean University, Zhanjiang, China

    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.