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Plastid-localized ZmENR1/ZmHAD1 complex ensures maize pollen and anther development through regulating lipid and ROS metabolism

Author

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  • Shaowei Zhang

    (University of Science and Technology Beijing
    Zhongzhi International Institute of Agricultural Biosciences)

  • Xueli An

    (University of Science and Technology Beijing
    Zhongzhi International Institute of Agricultural Biosciences
    Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Beijing Solidwill Sci-Tech Co. Ltd.)

  • Yilin Jiang

    (University of Science and Technology Beijing
    Zhongzhi International Institute of Agricultural Biosciences)

  • Quancan Hou

    (University of Science and Technology Beijing
    Zhongzhi International Institute of Agricultural Biosciences)

  • Bin Ma

    (University of Science and Technology Beijing
    Zhongzhi International Institute of Agricultural Biosciences)

  • Qingping Jiang

    (University of Science and Technology Beijing
    Zhongzhi International Institute of Agricultural Biosciences)

  • Kai Zhang

    (University of Science and Technology Beijing
    Zhongzhi International Institute of Agricultural Biosciences)

  • Lina Zhao

    (University of Science and Technology Beijing
    Zhongzhi International Institute of Agricultural Biosciences)

  • Xiangyuan Wan

    (University of Science and Technology Beijing
    Zhongzhi International Institute of Agricultural Biosciences
    Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Beijing Solidwill Sci-Tech Co. Ltd.)

Abstract

Lipid metabolism is critical for male reproduction in plants. Many lipid-metabolic genic male-sterility (GMS) genes function in the anther tapetal endoplasmic reticulum, while little is known about GMS genes involved in de novo fatty acid biosynthesis in the anther tapetal plastid. In this study, we identify a maize male-sterile mutant, enr1, with early tapetal degradation, defective anther cuticle, and pollen exine. Using genetic mapping, we clone a key GMS gene, ZmENR1, which encodes a plastid-localized enoyl-acyl carrier protein (ACP) reductase. ZmENR1 interacts with β-hydroxyacyl-ACP dehydratase (ZmHAD1) to enhance the efficiency of de novo fatty acid biosynthesis. Furthermore, the ZmENR1/ZmHAD1 complex is regulated by a Maize Male Sterility 1 (ZmMS1)-mediated feedback repression loop to ensure anther cuticle and pollen exine formation by affecting the expression of cutin/wax- and sporopollenin-related genes. Intriguingly, homologous genes of ENR1 from rice and Arabidopsis also regulate male fertility, suggesting that the ENR1-mediated pathway likely represents a conserved regulatory mechanism underlying male reproduction in flowering plants.

Suggested Citation

  • Shaowei Zhang & Xueli An & Yilin Jiang & Quancan Hou & Bin Ma & Qingping Jiang & Kai Zhang & Lina Zhao & Xiangyuan Wan, 2024. "Plastid-localized ZmENR1/ZmHAD1 complex ensures maize pollen and anther development through regulating lipid and ROS metabolism," Nature Communications, Nature, vol. 15(1), pages 1-19, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-55208-8
    DOI: 10.1038/s41467-024-55208-8
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    1. Youjun Zhang & Arun Sampathkumar & Sandra Mae-Lin Kerber & Corné Swart & Carsten Hille & Kumar Seerangan & Alexander Graf & Lee Sweetlove & Alisdair R. Fernie, 2020. "A moonlighting role for enzymes of glycolysis in the co-localization of mitochondria and chloroplasts," Nature Communications, Nature, vol. 11(1), pages 1-15, December.
    2. Laura M. McMurry & Margret Oethinger & Stuart B. Levy, 1998. "Triclosan targets lipid synthesis," Nature, Nature, vol. 394(6693), pages 531-532, August.
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