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首页> 外文期刊>Nature >An SHR SCR module specifies legume cortical cell fate to enable nodulation
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An SHR SCR module specifies legume cortical cell fate to enable nodulation

机译：SHR SCR模块指定豆类皮质单元格命运，以启用NODULATION

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摘要

Legumes, unlike other plants, have the ability to establish symbiosis with nitrogen-fixing rhizobia. It has been theorized that a unique property of legume root cortical cells enabled the initial establishment of rhizobial symbiosis(1-3). Here we show that a SHORTROOT-SCARECROW (SHR-SCR) stem cell program in cortical cells of the legume Medicago truncatula specifies their distinct fate. Regulatory elements drive the cortical expression of SCR, and stele-expressed SHR protein accumulates in cortical cells of M. truncatula but not Arabidopsis thaliana. The cortical SHR-SCR network is conserved across legume species, responds to rhizobial signals, and initiates legume-specific cortical cell division for de novo nodule organogenesis and accommodation of rhizobia. Ectopic activation of SHR and SCR in legumes is sufficient to induce root cortical cell division. Our work suggests that acquisition of the cortical SHR-SCR module enabled cell division coupled to rhizobial infection in legumes. We propose that this event was central to the evolution of rhizobial endosymbiosis.
机译：与其他植物不同，豆类有能力与氮素固定的根瘤菌建立共生。理论上已经理解了豆类根皮质细胞的独特性，使Rezobial Symbiosis的初始建立（1-3）。在这里，我们表明，豆类Medicago truncatula的皮质细胞中的短型稻草（ShR-SCR）干细胞程序指定了他们独特的命运。调节元件驱动SCR的皮质表达，并且Stele表达的SHR蛋白在M. Truncatula的皮质细胞中积聚，但不是拟南芥。皮质shr-scr网络在豆科物种上保存，响应无根瘤菌信号，并启动豆科特异性皮质细胞分裂，用于De Novo Nodule有机组织和根瘤菌的住宿。在豆类中的SHR和SCR的异位活化足以诱导根皮疹细胞分裂。我们的作品表明，收购皮质SHR-SCR模块使能细胞分裂耦合到豆类中的根瘤菌感染。我们建议这一事件是根瘤菌内联症的演变的核心。

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  • 来源
    《Nature》 |2021年第7843期|586-590|共5页
  • 作者

    Dong Wentao; Zhu Yayun; Chang Huizhong; Wang Chunhua; Yang Jun; Shi Jincai; Gao Jinpeng; Yang Weibing; Lan Liying; Wang Yuru; Zhang Xiaowei; Dai Huiling; Miao Yuchen; Xu Lin; He Zuhua; Song Chunpeng; Wu Shuang; Wang Dong; Yu Nan; Wang Ertao;

  • 作者单位

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China|Univ Chinese Acad Sci Beijing Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China|Shanghai Normal Univ Coll Life Sci Shanghai Key Lab Plant Mol Sci Shanghai Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China|Shanghai Normal Univ Coll Life Sci Shanghai Key Lab Plant Mol Sci Shanghai Peoples R China;

    Fujian Agr & Forestry Univ Coll Hort Fuzhou Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China|Univ Chinese Acad Sci Beijing Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China|Henan Univ Collaborat Innovat Ctr Crop Stress Biol Inst Plant Stress Biol State Key Lab Cotton Biol Dept Biol Kaifeng Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China|Univ Chinese Acad Sci Beijing Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China|Univ Chinese Acad Sci Beijing Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China;

    Henan Univ Collaborat Innovat Ctr Crop Stress Biol Inst Plant Stress Biol State Key Lab Cotton Biol Dept Biol Kaifeng Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China;

    Henan Univ Collaborat Innovat Ctr Crop Stress Biol Inst Plant Stress Biol State Key Lab Cotton Biol Dept Biol Kaifeng Peoples R China;

    Fujian Agr & Forestry Univ Coll Hort Fuzhou Peoples R China;

    Univ Massachusetts Amherst Dept Biochem & Mol Biol Amherst MA USA;

    Shanghai Normal Univ Coll Life Sci Shanghai Key Lab Plant Mol Sci Shanghai Peoples R China;

    Chinese Acad Sci Natl Key Lab Plant Mol Genet CAS Ctr Excellence Mol Plant Sci Inst Plant Physiol & Ecol SIBS Shanghai Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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