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A receptor heteromer mediates the male perception of female attractants in plants
Tong Wang,Liang Liang,Yong Xue,Peng-Fei Jia,Wei Chen,Meng-Xia Zhang,Ying-Chun Wang,Hong-Ju Li & Wei-Cai Yang
Nature
Abstract
Sexual reproduction requires recognition between the male and female gametes. In flowering plants, the immobile sperms are delivered to the ovule-enclosed female gametophyte by guided pollen tube growth. Although the female gametophyte-secreted peptides have been identified to be the chemotactic attractant to the pollen tube 1, 2, 3, the male receptor(s) is still unknown. Here we identify a cell-surface receptor heteromer, MDIS1–MIK, on the pollen tube that perceives female attractant LURE1 in Arabidopsis thaliana. MDIS1, MIK1 and MIK2 are plasma-membrane-localized receptor-like kinases with extracellular leucine-rich repeats and an intracellular kinase domain. LURE1 specifically binds the extracellular domains of MDIS1, MIK1 and MIK2, whereas mdis1 and mik1 mik2mutant pollen tubes respond less sensitively to LURE1. Furthermore, LURE1 triggers dimerization of the receptors and activates the kinase activity of MIK1. Importantly, transformation of At MDIS1 to the sister species Capsella rubella can partially break down the reproductive isolation barrier. Our findings reveal a new mechanism of the male perception of the female attracting signals.
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论文编号: |
DOI:10.1038/nature16975 |
论文题目: |
A receptor heteromer mediates the male perception of female attractants in plants |
英文论文题目: |
A receptor heteromer mediates the male perception of female attractants in plants |
第一作者: |
Tong Wang,Liang Liang,Yong Xue,Peng-Fei Jia,Wei Chen,Meng-Xia Zhang,Ying-Chun Wang,Hong-Ju Li & Wei-Cai Yang |
英文第一作者: |
Tong Wang,Liang Liang,Yong Xue,Peng-Fei Jia,Wei Chen,Meng-Xia Zhang,Ying-Chun Wang,Hong-Ju Li & Wei-Cai Yang |
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2016-02-11 |
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摘要: |
Sexual reproduction requires recognition between the male and female gametes. In flowering plants, the immobile sperms are delivered to the ovule-enclosed female gametophyte by guided pollen tube growth. Although the female gametophyte-secreted peptides have been identified to be the chemotactic attractant to the pollen tube 1, 2, 3, the male receptor(s) is still unknown. Here we identify a cell-surface receptor heteromer, MDIS1–MIK, on the pollen tube that perceives female attractant LURE1 in Arabidopsis thaliana. MDIS1, MIK1 and MIK2 are plasma-membrane-localized receptor-like kinases with extracellular leucine-rich repeats and an intracellular kinase domain. LURE1 specifically binds the extracellular domains of MDIS1, MIK1 and MIK2, whereas mdis1 and mik1 mik2mutant pollen tubes respond less sensitively to LURE1. Furthermore, LURE1 triggers dimerization of the receptors and activates the kinase activity of MIK1. Importantly, transformation of At MDIS1 to the sister species Capsella rubella can partially break down the reproductive isolation barrier. Our findings reveal a new mechanism of the male perception of the female attracting signals. |
英文摘要: |
Sexual reproduction requires recognition between the male and female gametes. In flowering plants, the immobile sperms are delivered to the ovule-enclosed female gametophyte by guided pollen tube growth. Although the female gametophyte-secreted peptides have been identified to be the chemotactic attractant to the pollen tube 1, 2, 3, the male receptor(s) is still unknown. Here we identify a cell-surface receptor heteromer, MDIS1–MIK, on the pollen tube that perceives female attractant LURE1 in Arabidopsis thaliana. MDIS1, MIK1 and MIK2 are plasma-membrane-localized receptor-like kinases with extracellular leucine-rich repeats and an intracellular kinase domain. LURE1 specifically binds the extracellular domains of MDIS1, MIK1 and MIK2, whereas mdis1 and mik1 mik2mutant pollen tubes respond less sensitively to LURE1. Furthermore, LURE1 triggers dimerization of the receptors and activates the kinase activity of MIK1. Importantly, transformation of At MDIS1 to the sister species Capsella rubella can partially break down the reproductive isolation barrier. Our findings reveal a new mechanism of the male perception of the female attracting signals. |
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Nature |
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Nature |
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Tong Wang,Liang Liang,Yong Xue,Peng-Fei Jia,Wei Chen,Meng-Xia Zhang,Ying-Chun Wang,Hong-Ju Li & Wei-Cai Yang. A receptor heteromer mediates the male perception of female attractants in plants. Nature. DOI:10.1038/nature16975 |
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