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首页> 外文期刊>Plant Molecular Biology >Cucumber ECERIFERUM1 (CsCER1), which influences the cuticle properties and drought tolerance of cucumber, plays a key role in VLC alkanes biosynthesis
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Cucumber ECERIFERUM1 (CsCER1), which influences the cuticle properties and drought tolerance of cucumber, plays a key role in VLC alkanes biosynthesis

机译：黄瓜ECERIFERUM1（CsCER1）影响黄瓜的表皮特性和耐旱性，在VLC烷烃的生物合成中起关键作用

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摘要

Most land plants have a wax layer which covers their aerial parts to protect them from environmental stresses, such as drought, UV radiation, and pathogenic invasion. The wax biosynthesis has been well studied previously in Arabidopsis, but it still remains elusive in cucumber. Here, we isolated a CER1 homolog CsCER1 in cucumber, and we found that the expression of CsCER1 in the cucumber line 3401 which shows waxy fruit phenotype is much higher than that in the cucumber line 3413 which displays glossy fruit phenotype. Spatial and temporal expression analyses revealed that CsCER1 is specifically expressed in the epidermis where waxes are synthesized, and sub-cellular location showed that CsCER1 protein is localized to the endoplasmic reticulum. The expression of CsCER1 can be induced by low temperature, drought, salt stress and abscisic acid. In addition, abnormal expressions of CsCER1 in transgenic cucumber plants have dramatic effects on very-long-chain (VLC) alkanes biosynthesis, cuticle permeability, and drought resistance. Our data suggested that CsCER1 plays an important role in VLC alkanes biosynthesis in cucumber.
机译：大多数陆地植物都有一层蜡层覆盖其地面部分，以保护它们免受环境压力，例如干旱，紫外线辐射和病原体的入侵。蜡的生物合成在拟南芥中已有很好的研究，但在黄瓜中仍然难以捉摸。在此，我们分离了黄瓜中的CER1同源物CsCER1，并且发现CsCER1在显示蜡质水果表型的黄瓜系3401中的表达远高于在显示光泽水果表型的黄瓜系3413中的表达。时空表达分析表明，CsCER1在合成蜡的表皮中特异性表达，并且亚细胞定位表明CsCER1蛋白定位于内质网。低温，干旱，盐胁迫和脱落酸均可诱导CsCER1的表达。此外，转基因黄瓜植株中CsCER1的异常表达对超长链（VLC）烷烃的生物合成，表皮通透性和抗旱性具有显着影响。我们的数据表明，CsCER1在黄瓜VLC烷烃的生物合成中起着重要作用。

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