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ORIGINAL RESEARCH article

Front. Plant Sci.
Sec. Plant Breeding
Volume 15 - 2024 | doi: 10.3389/fpls.2024.1501029
This article is part of the Research Topic Thiol-Based Redox Regulation: Key Mechanisms in Plant Growth and Stress Response View all articles

The Class III Peroxidase gene TaPRX-2A controls grain number per spike in common wheat (Triticum aestivum L.)

Provisionally accepted
Peisen Su Peisen Su *Dongtian Zang Dongtian Zang Wenjia You Wenjia You Yangyang Wu Yangyang Wu Pengyue Wang Pengyue Wang Zhiyu Wang Zhiyu Wang Qingyun Yang Qingyun Yang Shatong Chi Shatong Chi
  • Liaocheng University, Liaocheng, China

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

    Some peroxidases (PRXs) are involved in abiotic stress response. However, to the best of our knowledge, the effects of PRXs on agronomic traits including grain number per spike (GNS), spikelet number per spike (SNS) and spike length (SL) are also largely unknown. This study investigated the role of the wheat PRX gene TaPRX-2A in controlling GNS by generating transgenic overexpression lines. These plants displayed lower GNS and shorter SL than the wild-type plants.RNA-seq analysis indicated alterations in various pathways including flavonoid biosynthesis, lignin biosynthesis, phytohormone signaling, as well as sucrose and starch biosynthesis. Co-expression analysis showed that transcription factors, such as bHLH, WRKY, and bZIP may be involved in the regulation of various genes associated with these pathways. Our findings provide insights into the mechanisms by which PRXs regulate agronomic traits, illustrating potential applicability in crop improvement programs.

    Keywords: wheat, Peroxidases (PRXs), TaPRX-2A, Grain number per spike (GNS), Co-expression analysis

    Received: 24 Sep 2024; Accepted: 19 Dec 2024.

    Copyright: © 2024 Su, Zang, You, Wu, Wang, Wang, Yang and Chi. 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: Peisen Su, Liaocheng University, Liaocheng, China

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