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1
Die and let live: leaf senescence contributes to plant survival under drought stress.舍弃自身以换取生机：叶片衰老有助于植物在干旱胁迫下存活。
Funct Plant Biol. 2004 May;31(3):203-216. doi: 10.1071/FP03236.
2
WRKY22 transcription factor mediates dark-induced leaf senescence in Arabidopsis.WRKY22 转录因子介导拟南芥暗诱导的叶片衰老。
Mol Cells. 2011 Apr;31(4):303-13. doi: 10.1007/s10059-011-0047-1. Epub 2011 Feb 23.
3
The Bin3 RNA methyltransferase is required for repression of caudal translation in the Drosophila embryo.Bin3 RNA 甲基转移酶在果蝇胚胎尾部翻译抑制中是必需的。
Dev Biol. 2011 Apr 1;352(1):104-15. doi: 10.1016/j.ydbio.2011.01.017. Epub 2011 Jan 22.
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The RAV1 transcription factor positively regulates leaf senescence in Arabidopsis.RAV1 转录因子正向调控拟南芥叶片衰老。
J Exp Bot. 2010 Sep;61(14):3947-57. doi: 10.1093/jxb/erq206.
5
The RNA binding protein Larp1 regulates cell division, apoptosis and cell migration.RNA 结合蛋白 Larp1 调节细胞分裂、细胞凋亡和细胞迁移。
Nucleic Acids Res. 2010 Sep;38(16):5542-53. doi: 10.1093/nar/gkq294. Epub 2010 Apr 29.
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Conserved and divergent features of the structure and function of La and La-related proteins (LARPs).La及La相关蛋白（LARP）结构与功能的保守及差异特征
Biochim Biophys Acta. 2010 May-Jun;1799(5-6):365-78. doi: 10.1016/j.bbagrm.2010.01.011. Epub 2010 Feb 2.
7
Drosophila Larp associates with poly(A)-binding protein and is required for male fertility and syncytial embryo development.果蝇Larp与聚腺苷酸结合蛋白相关联，是雄性生育力和多核胚发育所必需的。
Dev Biol. 2009 Oct 1;334(1):186-97. doi: 10.1016/j.ydbio.2009.07.016. Epub 2009 Jul 22.
8
The Arabidopsis RESURRECTION1 gene regulates a novel antagonistic interaction in plant defense to biotrophs and necrotrophs.拟南芥RESURRECTION1基因在植物对活体营养型和死体营养型病原菌的防御中调控一种新型拮抗作用。
Plant Physiol. 2009 Sep;151(1):290-305. doi: 10.1104/pp.109.142158. Epub 2009 Jul 22.
9
Networking by small-molecule hormones in plant immunity.小分子激素在植物免疫中的网络作用
Nat Chem Biol. 2009 May;5(5):308-16. doi: 10.1038/nchembio.164.
10
A comprehensive analysis of the La-motif protein superfamily.拉基序蛋白超家族的综合分析。
RNA. 2009 May;15(5):750-64. doi: 10.1261/rna.1478709. Epub 2009 Mar 19.

LARP1c 是一种含有 LAM 结构域的 RNA 结合蛋白，其过表达会导致拟南芥叶片提前衰老。

Overexpression of a LAM domain containing RNA-binding protein LARP1c induces precocious leaf senescence in Arabidopsis.

机构信息

State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China.

出版信息

Mol Cells. 2012 Oct;34(4):367-74. doi: 10.1007/s10059-012-0111-5. Epub 2012 Sep 6.

DOI:10.1007/s10059-012-0111-5
PMID:22965746
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3887763/
Abstract

Leaf senescence is the final stage of leaf life history, and it can be regulated by multiple internal and external cues. La-related proteins (LARPs), which contain a well-conserved La motif (LAM) domain and normally a canonical RNA recognition motif (RRM) or noncanonical RRM-like motif, are widely present in eukaryotes. Six LARP genes (LARP1a-1c and LARP6a-6c) are present in Arabidopsis, but their biological functions have not been studied previously. In this study, we investigated the biological roles of LARP1c from the LARP1 family. Constitutive or inducible overexpression of LARP1c caused premature leaf senescence. Expression levels of several senescence-associated genes and defense-related genes were elevated upon overexpression of LARP1c. The LARP1c null mutant 1c-1 impaired ABA-, SA-, and MeJA-induced leaf senescence in detached leaves. Gene expression profiles of LARP1c showed age-dependent expression in rosette leaves. Taken together, our results suggest LARP1c is involved in regulation of leaf senescence.

摘要

叶片衰老是叶片生命史的最后一个阶段，可以通过多种内部和外部信号来调节。La 相关蛋白（LARPs）广泛存在于真核生物中，它们含有一个保守的 La 基序（LAM）结构域，通常是一个典型的 RNA 识别基序（RRM）或非典型的 RRM 样基序。拟南芥中有六个 LARP 基因（LARP1a-1c 和 LARP6a-6c），但它们的生物学功能以前没有研究过。在这项研究中，我们研究了 LARP1 家族中的 LARP1c 的生物学作用。组成型或诱导型过表达 LARP1c 导致叶片提前衰老。过表达 LARP1c 会导致几个与衰老相关基因和防御相关基因的表达水平升高。LARP1c 缺失突变体 1c-1 会损害脱落叶片中 ABA、SA 和 MeJA 诱导的叶片衰老。LARP1c 的基因表达谱在莲座叶中表现出年龄依赖性表达。综上所述，我们的结果表明 LARP1c 参与了叶片衰老的调控。