PDR 2012, 34(5) 509-518 DOI:   10.3724/SP.J.1143.2012.12032  ISSN: 2095-0845 CN: 53-1217/Q

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Keywords
Arabidopsis thaliana
VQ gene family
ABA
SA
JA
ET
Authors
LIN Yuan-Yuan-1、2
YU Di-Qiu-1
PubMed
Article by Lin, Y. Y. 1、2
Article by Yu, D. Q. 1

Expression Profiles of Arabidopsis thaliana VQ Gene Family in DefenseRelated Hormones Treatments

 LIN  Yuan-Yuan-1、2 , YU  Di-Qiu-1

1 Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China;
2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Abstract

Several VQ proteins are recently identified as WRKY factorsinteracting partners in Arabidopsis and involved in regulating physiological processes. Searching of genomic databases found that VQ gene family is specific to land plants and these VQ genes encode proteins characteristic of a conserved VQmotif. It consists of 34 representatives in Arabidopsis and can be divided into two groups based on the similarity of the amino acid sequences. To understand the functions of Arabidopsis VQ proteins, we examined the expression profiles of AtVQ genes in various defenserelated hormones treatments. qRTPCR analysis revealed that a majority of them were differently regulated in response to salicylic acid (SA), methyl jasmonate (MeJA), or 1aminocyclopropane1carboxylate (ACC). And some members are induced by two of these three hormones. Moreover, four members (AtVQ3, AtVQ18, AtVQ23 and AtVQ24) are induced by SA, MeJA and ACC simultaneity. However, there is only one AtVQ gene (AtVQ27) is upregulated after spraying of abscisic acid (ABA). These results suggest that Arabidopsis VQ genes may be involved in plant defense responses.

Keywords Arabidopsis thaliana   VQ gene family   ABA   SA   JA   ET  
Received 2012-03-13 Revised  Online: 2012-05-21 
DOI: 10.3724/SP.J.1143.2012.12032
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