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首页> 外文期刊>Environmental Science & Technology >Wheat Cell Number Regulator CNR10 Enhances the Tolerance, Translocation, and Accumulation of Heavy Metals in Plants
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Wheat Cell Number Regulator CNR10 Enhances the Tolerance, Translocation, and Accumulation of Heavy Metals in Plants

机译：小麦细胞数调节剂CNR10增强了植物中重金属的耐受性，易位性和积累

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摘要

Heavy metal contamination affects crop growth and development and can indirectly threaten human health. Therefore, improving the content of microelements and reducing the accumulation of toxic metals by genetic breeding in crops is an effective strategy to solve this environmental problem. Previous reports show plant cadmium resistance (PCR) protein can transport zinc (Zn) and cadmium (Cd). The cell number regulator (CNR) protein, which functions to regulate organ size, has high similarity to, and shares conserved motifs with, PCR. Therefore, CNR may be involved in regulating heavy metal translocation. We isolated TuCNR10 from diploid wheat, Triticum urartu. Real-time quantitative PCR showed TuCNR10 expression increased in the shoots and roots of seedlings under Cd, Zn, and manganese (Mn) stresses. Confocal imaging indicated TuCNR10 was localized at the plasma membrane. Overexpression of TuCNR10 in Arabidopsis and rice enhanced Cd, Zn, and Mn tolerance and improved Cd, Zn, and Mn translocation from roots to shoots. Compared with wild-type rice, rice overexpressing TuCNR10 had lower Cd and higher Zn and Mn contents in grains. These results indicated that TuCNR10 may be a transporter of Cd, Zn, and Mn. TuCNR10 may be a useful genetic resource for microelement fortification and reducing toxic metal accumulation in crops.
机译：重金属污染影响作物的生长和发育，并间接威胁人类健康。因此，通过作物遗传育种提高微量元素含量并减少有毒金属的积累是解决这一环境问题的有效策略。先前的报告显示，植物抗镉性（PCR）蛋白可以转运锌（Zn）和镉（Cd）。细胞数调节剂（CNR）蛋白具有调节器官大小的功能，与PCR具有高度相似性，并具有保守的基序。因此，CNR可能参与调节重金属的转运。我们从二倍体小麦urartu中分离了TuCNR10。实时定量PCR显示，在镉，锌和锰（Mn）胁迫下，TuCNR10在幼苗的芽和根中表达增加。共聚焦成像表明TuCNR10位于质膜上。 TuCNR10在拟南芥和水稻中的过表达增强了Cd，Zn和Mn的耐受性，并改善了Cd，Zn和Mn从根到芽的转运。与野生型水稻相比，过量表达TuCNR10的水稻籽粒中Cd含量较低，Zn，Mn含量较高。这些结果表明，TuCNR10可能是Cd，Zn和Mn的转运蛋白。 TuCNR10可能是用于强化微量元素和减少农作物中有毒金属积累的有用遗传资源。

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  • 来源
    《Environmental Science & Technology》 |2019年第2期|860-867|共8页
  • 作者

    Qiao Kun; Tian Yanbao; Hu Zhangli; Chai Tuanyao;

  • 作者单位

    Shenzhen Univ, Coll Life Sci & Oceanog, Guangdong Engn Res Ctr Marine Algal Biotechnol, Shenzhen Key Lab Marine Bioresource & Ecoenvironm, Shenzhen, Peoples R China|Univ Chinese Acad Sci, Coll Life Sci, Beijing, Peoples R China;

    Chinese Acad Sci, Inst Genet & Dev Biol, Beijing, Peoples R China;

    Shenzhen Univ, Coll Life Sci & Oceanog, Guangdong Engn Res Ctr Marine Algal Biotechnol, Shenzhen Key Lab Marine Bioresource & Ecoenvironm, Shenzhen, Peoples R China;

    Univ Chinese Acad Sci, Coll Life Sci, Beijing, Peoples R China|Chinese Acad Sci, Inst Genet & Dev Biol, Beijing, Peoples R China|Chinese Acad Sci, Southeast Asia Biodivers Res Inst, Yezin 05282, Nay Pyi Taw, Myanmar|Chinese Acad Sci, Innovat Acad Seed Design INASEED, Beijing, 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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