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A PECTIN METHYLESTERASE gene at the maize Ga1 locus confers male function in unilateral cross-incompatibility

Author

Listed:
  • Zhaogui Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Baocai Zhang

    (Chinese Academy of Sciences)

  • Zhibin Chen

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Dongmei Zhang

    (Chinese Academy of Sciences)

  • Huairen Zhang

    (Chinese Academy of Sciences)

  • Hang Wang

    (University of Chinese Academy of Sciences
    Chinese Academy of Sciences)

  • Yu’e Zhang

    (Chinese Academy of Sciences)

  • Darun Cai

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Juan Liu

    (Chinese Academy of Sciences)

  • Senlin Xiao

    (Chinese Academy of Sciences)

  • Yanqing Huo

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Jie Liu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Lanjun Zhang

    (Chinese Academy of Sciences)

  • Mingming Wang

    (Chinese Academy of Sciences)

  • Xu Liu

    (Chinese Academy of Agricultural Sciences)

  • Yongbiao Xue

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Li Zhao

    (Chinese Academy of Sciences)

  • Yihua Zhou

    (University of Chinese Academy of Sciences
    Chinese Academy of Sciences)

  • Huabang Chen

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Unilateral cross-incompatibility (UCI) is a unidirectional inter/intra-population reproductive barrier when both parents are self-compatible. Maize Gametophyte factor1 (Ga1) is an intraspecific UCI system and has been utilized in breeding. However, the mechanism underlying maize UCI specificity has remained mysterious for decades. Here, we report the cloning of ZmGa1P, a pollen-expressed PECTIN METHYLESTERASE (PME) gene at the Ga1 locus that can confer the male function in the maize UCI system. Homozygous transgenic plants expressing ZmGa1P in a ga1 background can fertilize Ga1-S plants and can be fertilized by pollen of ga1 plants. ZmGa1P protein is predominantly localized to the apex of growing pollen tubes and may interact with another pollen-specific PME protein, ZmPME10-1, to maintain the state of pectin methylesterification required for pollen tube growth in Ga1-S silks. Our study discloses a PME-mediated UCI mechanism and provides a tool to manipulate hybrid breeding.

Suggested Citation

  • Zhaogui Zhang & Baocai Zhang & Zhibin Chen & Dongmei Zhang & Huairen Zhang & Hang Wang & Yu’e Zhang & Darun Cai & Juan Liu & Senlin Xiao & Yanqing Huo & Jie Liu & Lanjun Zhang & Mingming Wang & Xu Liu, 2018. "A PECTIN METHYLESTERASE gene at the maize Ga1 locus confers male function in unilateral cross-incompatibility," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06139-8
    DOI: 10.1038/s41467-018-06139-8
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    Cited by:

    1. Shimin You & Zhigang Zhao & Xiaowen Yu & Shanshan Zhu & Jian Wang & Dekun Lei & Jiawu Zhou & Jing Li & Haiyuan Chen & Yanjia Xiao & Weiwei Chen & Qiming Wang & Jiayu Lu & Keyi Chen & Chunlei Zhou & Xi, 2023. "A toxin-antidote system contributes to interspecific reproductive isolation in rice," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    2. Yuebin Wang & Wenqiang Li & Luxi Wang & Jiali Yan & Gang Lu & Ning Yang & Jieting Xu & Yuqing Wang & Songtao Gui & Gengshen Chen & Shuyan Li & Chengxiu Wu & Tingting Guo & Yingjie Xiao & Marilyn L. Wa, 2022. "Three types of genes underlying the Gametophyte factor1 locus cause unilateral cross incompatibility in maize," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    3. Zhibin Chen & Zhaogui Zhang & Huairen Zhang & Kai Li & Darun Cai & Li Zhao & Juan Liu & Huabang Chen, 2022. "A pair of non-Mendelian genes at the Ga2 locus confer unilateral cross-incompatibility in maize," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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