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作 者 ：刘俊江,李正国,杨迎伍

期 刊 ：热带亚热带植物学报 2011年 19卷 5期 页码：483~490

关键词：XRN家族；rRNA加工；mRNA降解；PTGS；乙烯信号通路；

Keywords:XRN family, rRNA processing, mRNA degradation, PTGS (Post-transcriptional gene silence), Ethylene signal pathway,

摘 要 ：XRN家族是一类5‘-3‘核酸外切酶家族,主要参与rRNA的成熟加工以及特异mRNA的降解过程,在动物、植物以及微生物的生长发育过程中起着重要的作用。对XRN家族在植物生长发育过程中的功能进行了综述,XRN家族在植物中主要参与rRNA加工过程、miRNA途径、外源mRNA降解过程以及乙烯信号通路。

Abstract:XRN protein family, a kind of 5‘-to-3‘exoribonuclease,mainly participate in processes of pre-rRNAs and degradation of mRNAs, plays important role in the growth and development of animals, plants and microorganisms. The recent progresses of function of XRN family during plant developmental stages were reviewed. XRN family in plants involves in the processing of rRNA, miRNA pathway, degradation of exogenous mRNAs and ethylene signal pathway.

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