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首页> 外文期刊>Journal of Experimental Botany >The CEP family in land plants: evolutionary analyses, expression studies, and role in Arabidopsis shoot development
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The CEP family in land plants: evolutionary analyses, expression studies, and role in Arabidopsis shoot development

机译：陆地植物中的CEP家族：进化分析，表达研究及其在拟南芥芽发育中的作用

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摘要

In Arabidopsis, more than 1000 putative small signalling peptides have been predicted, but very few have been functionally characterized. One class of small post-translationally modified signalling peptides is the C-TERMINALLY ENCODED PEPTIDE (CEP) family, of which one member has been shown to be involved in regulating root architecture. This work applied a bioinformatics approach to identify more members of the CEP family. It identified 10 additional members and revealed that this family only emerged in flowering plants and was absent from extant members of more primitive plants. The data suggest that the CEP proteins form two subgroups according to the CEP domain. This study further provides an overview of specific CEP expression patterns that offers a comprehensive framework to study the role of the CEP signalling peptides in plant development. For example, expression patterns point to a role in above-ground tissues which was corroborated by the analysis of transgenic lines with perturbed CEP levels. These results form the basis for further exploration of the mechanisms underlying this family of peptides and suggest their putative roles in distinct developmental events of higher plants.
机译：在拟南芥中，已经预测了1000多种推定的小信号肽，但是很少有功能性的表征。一类小的翻译后修饰的信号肽是C末端编码肽（CEP）家族，其成员之一已显示参与调节根的结构。这项工作应用了生物信息学方法来识别CEP家族的更多成员。它确定了另外10个成员，并揭示该家族仅出现在开花植物中，而更原始植物的现存成员中却没有该家族。数据表明，CEP蛋白根据CEP结构域形成两个亚组。这项研究进一步概述了特定的CEP表达模式，为研究CEP信号肽在植物发育中的作用提供了一个全面的框架。例如，表达模式指出了在地上组织中的作用，这通过分析具有扰动的CEP水平的转基因品系得到了证实。这些结果构成了进一步探索该肽家族基础的机制的基础，并暗示了它们在高等植物不同发育事件中的推定作用。

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