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首页> 外文期刊>Rice >Overexpression of the Tibetan Plateau annual wild barley ( Hordeum spontaneum ) HsCIPKs enhances rice tolerance to heavy metal toxicities and other abiotic stresses
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Overexpression of the Tibetan Plateau annual wild barley ( Hordeum spontaneum ) HsCIPKs enhances rice tolerance to heavy metal toxicities and other abiotic stresses

机译：藏高原年度野生大麦（Hordeum Spontaneum）Hscipks的过度表达增强了对重金属毒性和其他非生物胁迫的米含量

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Background The calcineurin B-like protein (CBL) and CBL-interacting protein kinase (CIPK) signaling system plays a key regulatory role in plant stress signaling. The roles of plant-specific CIPKs, essential for CBL-CIPK functions, in the response to various abiotic stresses have been extensively studied so far. However, until now, the possible roles of the CIPKs in the plant response to heavy metal toxicities are largely unknown. Results In this study, we used bioinformatic and molecular strategies to isolate 12 HsCIPK genes in Tibetan Plateau annual wild barley ( Hordeum spontaneum C. Koch) and subsequently identified their functional roles in the response to heavy metal toxicities. The results showed that multiple HsCIPKs were transcriptionally regulated by heavy metal toxicities (e.g., Hg, Cd, Cr, Pb, and Cu) and other abiotic stresses (e.g., salt, drought, aluminum, low and high temperature, and abscisic acid). Furthermore, the ectopic overexpression of each HsCIPK in rice ( Oryza sativa L. cv Nipponbare) showed that transgenic plants of multiple HsCIPKs displayed enhanced tolerance of root growth to heavy metal toxicities (Hg, Cd, Cr, and Cu), salt and drought stresses. These results suggest that HsCIPKs are involved in the response to heavy metal toxicities and other abiotic stresses. Conclusions Tibetan Plateau annual wild barley HsCIPKs possess broad applications in genetically engineering of rice with tolerance to heavy metal toxicities and other abiotic stresses.
机译：背景技术钙突蛋白B样蛋白（CBL）和CBL相互作用蛋白激酶（CIPK）信号传导系统在植物应激信号中起着关键的调节作用。到目前为止，植物特异性CIPK的作用是对各种非生物应激的响应的CBL-CIPK功能。然而，到目前为止，CIPK在植物对重金属毒性的植物反应中可能的作用在很大程度上是未知的。结果在这项研究中，我们使用生物信息化和分子策略在藏高平原年度野生大麦（Hordeum Spontaneum C.Koch）中分离12个Hscipk基因，随后鉴定了对重金属毒性的反应中的功能作用。结果表明，通过重金属毒性（例如，Hg，Cd，Cr，Pb和Cu）和其他非生物胁迫（例如，盐，干旱，铝，低温和脱落酸）进行多种Hscipks。此外，各种Hscipk在水稻（Oryza Sativa L.CV Nipponbare）的异位过度表达表明，多种Hscipk的转基因植物显示出对重金属毒性的根生长增强耐受性（Hg，Cd，Cr和Cu），盐和干旱胁迫。这些结果表明，HSCIPK参与了对重金属毒性和其他非生物胁迫的反应。结论西藏高原年度野生大麦HSCIPK在稻米的基因工程中具有广泛应用，具有耐重金属毒性和其他非生物胁迫。

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