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ORIGINAL RESEARCH article

Front. Plant Sci.
Sec. Plant Physiology
Volume 15 - 2024 | doi: 10.3389/fpls.2024.1397817

Unveiling the Protective Role of Anthocyanin in Rice: Insights into Drought-Induced Oxidative Stress and Metabolic Regulation

Provisionally accepted
Saleem Asif Saleem Asif 1Rahmatullah Jan Rahmatullah Jan 1*Nari Kim Nari Kim 1Sajjad Asaf Sajjad Asaf 2Yoon-Hee Jang Yoon-Hee Jang 1Eun-Gyeong Kim Eun-Gyeong Kim 1Zakirullah Khan Zakirullah Khan 1Kyung-Min Kim Kyung-Min Kim 1Lubna . Lubna . 2
  • 1 Kyungpook National University, Daegu, North Gyeongsang, Republic of Korea
  • 2 University of Nizwa, Nizwa, Oman

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

    This study investigates the impact of anthocyanin treatment on rice plants under drought stress, focusing on phenotypic, molecular, and biochemical responses. Anthocyanin-treated plants exhibited significant enhancements in various traits, including growth parameters and reproductive characteristics, under normal conditions. When subjected to drought stress, these plants displayed resilience, maintaining or improving essential morphological and physiological features compared to non-treated counterparts. Notably, anthocyanin application mitigated drought-induced oxidative stress, as evidenced by reduced levels of reactive oxygen species (ROS) and lipid membrane peroxidation. The study also elucidates the regulatory role of anthocyanins in the expression of flavonoid biosynthetic genes, leading to increased levels of key secondary metabolites.Furthermore, anthocyanin treatment influenced the levels of stress-related signaling molecules, including melatonin, proline, abscisic acid (ABA), and salicylic acid (SA), contributing to enhanced stress tolerance. The enzymatic activity of antioxidants and the expression of droughtresponsive genes were modulated by anthocyanins, emphasizing their role in antioxidant defense and stress response. Additionally, anthocyanin treatment positively influenced macronutrient concentrations, particularly calcium ion (Ca + ), potassium ion (K + ), and sodium ion (Na + ), essential for cell wall and membrane stability. The findings collectively highlight the multifaceted protective effects of anthocyanins, positioning them as potential key players in conferring resilience to drought stress in rice plants. The study provides valuable insights into the molecular and physiological mechanisms underlying anthocyanin-mediated enhancement of drought stress tolerance, suggesting promising applications in agricultural practices for sustainable crop production.

    Keywords: Anthocyanin, Drought stress, Melatonin, abscic acid, Antioxidants

    Received: 08 Mar 2024; Accepted: 24 Apr 2024.

    Copyright: © 2024 Asif, Jan, Kim, Asaf, Jang, Kim, Khan, Kim and .. 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: Rahmatullah Jan, Kyungpook National University, Daegu, 702-701, North Gyeongsang, 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.