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Characterization of the variable 3 ' UTR and expression of the two intron-containing KIN transcripts from Capsella bursa-pastoris

文献类型： 外文期刊

作者： Tao, Peng 1 ; Wang, Jianbo 1 ;

作者机构： 1.Wuhan Univ, State Key Lab Hybrid Rice, Coll Life Sci, Wuhan 430072, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Vegetables, Hangzhou 310021, Zhejiang, Peoples R China

关键词： KIN gene;Alternative splicing;Variable 3 ' UTR;Gene expression;Capsella bursa-pastoris

期刊名称：GENE （ 影响因子：3.688； 五年影响因子：3.329 ）

ISSN： 0378-1119

年卷期： 2012 年 507 卷 2 期

页码：

收录情况： SCI

摘要： KIN genes are crucial members of the cold-regulated (COR) gene family, and are exclusively involved in normal developmental processes in many organs and respond to a variety of abiotic stresses in plants. Here, we cloned and sequenced not only two completely-spliced KIN transcripts (CbKIN1-S and CbKIN2-S), but also two intron-containing KIN transcripts (CbKIN1-U and CbKIN2-U), from Capsella bursa-pastoris, a widespread plant of the Brassicaceae family. The CbKIN1-U and CbKIN2-U transcripts each contained one additional intron in the coding region compared to the corresponding CbKIN1-S and CbKIN2-S transcripts. In addition, the two intron-containing KIN transcripts were found by rapid amplification of cDNA 3' ends (3' RACE) analysis with specific primers to have variable 3' untranslated regions (3' UTRs). We also analyzed CbKIN1-U and CbKIN2-U levels in different organs and embryonic stages by quantitative polymerase chain reaction (qPCR). They were found to be expressed in middle-stage embryos and flowers. After abscisic acid (ABA) treatment, CbKIN1-U and CbKIN2-U showed strong responses in young leaves and weak responses in flowers. Levels of the two intron-containing KIN transcripts were markedly increased in young leaves when plants were exposed to cold and heat stress. Both of them showed stronger responses to ABA treatment and cold stress than that to heat stress. CbKIN1-U and CbKIN2-U share similar gene expression profiles in development and in response to exposure to different stresses, suggesting that they probably play similar biological roles in C. bursa-pastoris. (c) 2012 Elsevier B.V. All rights reserved.

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