Over-expression of the PaAP1 gene from sweet cherry (Prunus avium L.) causes early flowering in Arabidopsis thaliana

文献类型： 外文期刊

第一作者： Wang, Jing

作者： Wang, Jing;Zhang, Xiaoming;Yan, Guohua;Zhou, Yu;Zhang, Kaichun

作者机构：

关键词： Sweet cherry;PaAP1;Early-flower induction

期刊名称：JOURNAL OF PLANT PHYSIOLOGY （ 影响因子：3.549； 五年影响因子：4.164 ）

ISSN： 0176-1617

年卷期： 2013 年 170 卷 3 期

页码：

收录情况： SCI

摘要： A homologue of SQUAMOSA/APETALA1, designated PaAP1, was isolated from Prunus avium by reverse transcription-PCR (RT-PCR). The full length of PaAP1 cDNA is 753 bp, and it codes for a polypeptide of 250 amino acid residues. Sequence comparison revealed that PaAP1 belongs to the MADS-box gene family. Phylogenetic analysis indicated that PaAP1 shared the highest identity with SQUA/AP1 homologues from Prunus serrulata. Real-time fluorescence quantitative PCR analysis showed that PaAP1 was expressed at high levels in petal, sepal, style, and flower buds, which was slightly different from the expression pattern of AP1 of Arabidopsis thaliana. To characterize the functions of of PaAP1, we assessed Arabidopsis transformed with 35S::PaAP1. A total of 8 transgenic T-1 lines with an early flowering phenotype were obtained, and a 3:1 segregation ratio of flowering time was observed in the T-2 generation of 4 lines. This study provides. the first functional analysis of an SQUA/AP1 homolog from P. avium and suggests that PaAP1 is potentially useful for shortening the juvenile period in sweet cherry. (C) 2012 Elsevier GmbH. All rights reserved.

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