Nature Communications
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.
| 论文编号: | DOI:10.1038/s41467-018-06139-8 |
| 论文题目: | A PECTIN METHYLESTERASE Gene at the Maize Ga1 Locus Confers Male Function in Unilateral Cross-incompatibility |
| 英文论文题目: | A PECTIN METHYLESTERASE Gene at the Maize Ga1 Locus Confers Male Function in Unilateral Cross-incompatibility |
| 第一作者: | 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, Yongbiao Xue, Li Zhao, Yihua Zhou & Huabang Chen |
| 英文第一作者: | 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, Yongbiao Xue, Li Zhao, Yihua Zhou & Huabang Chen |
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| 发表年度: | 2018-09-11 |
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| 摘要: | 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. |
| 英文摘要: | 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. |
| 刊物名称: | Nature Communications |
| 英文刊物名称: | Nature Communications |
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| 其它备注: | 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, Yongbiao Xue, Li Zhao, Yihua Zhou & Huabang Chen. A PECTIN METHYLESTERASE Gene at the Maize Ga1 Locus Confers Male Function in Unilateral Cross-incompatibility Nature Communications. DOI:10.1038/s41467-018-06139-8 |
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