Volume 32 Issue 2
Mar.  2015
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SIMA Xiaojiao, ZHENG Bingsong. Advances in primary auxin-responsive Aux/IAA gene family: a review[J]. Journal of Zhejiang A&F University, 2015, 32(2): 313-318. doi: 10.11833/j.issn.2095-0756.2015.02.021
Citation: SIMA Xiaojiao, ZHENG Bingsong. Advances in primary auxin-responsive Aux/IAA gene family: a review[J]. Journal of Zhejiang A&F University, 2015, 32(2): 313-318. doi: 10.11833/j.issn.2095-0756.2015.02.021

Advances in primary auxin-responsive Aux/IAA gene family: a review

doi: 10.11833/j.issn.2095-0756.2015.02.021
  • Received Date: 2014-09-01
  • Rev Recd Date: 2014-10-13
  • Publish Date: 2015-04-20
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Advances in primary auxin-responsive Aux/IAA gene family: a review

doi: 10.11833/j.issn.2095-0756.2015.02.021

Abstract: Members of Aux/IAA gene family are responsive to primary auxin induction. ARF is a kind of regulating auxin response gene expression to regulate auxin primary function of gene transcription. By combining its response elements with the specificity of ARF, Aux/IAA is a transcription function to regulate primary auxin-responsive gene. This paper reviewed the recent advances in the structural characteristics, regulation mechanism and biological functions of Aux/IAAs. Aux/IAAs consisted of four conserved domains: Domains Ⅰ, Ⅱ, Ⅲ and Ⅳ. Domain Ⅰ was responsible for the protein inhibition of Aux/IAAs. With a leucine motif, Domain Ⅱ was capable of rapid protein stability. Domains Ⅲ and Ⅳ were responsible for protein dimerization (homo- and hetero-dimerization). Aux/IAAs promoted the transcription of early genes by combining auxin response factors, and they regulated the expression of downstream genes in the process of auxin signal transduction. Different Aux/IAAs were expressed in different tissues and organisms. Also, the study of Aux/IAA mutants indicated that different Aux/IAAs had different functions due to differences in temporal and spatial expression and affinities with promoters of Aux/IAA genes to the ARF gene. Plant hormones and environmental factors also had important roles in regulating Aux/IAAs. [Ch, 43 ref.]

SIMA Xiaojiao, ZHENG Bingsong. Advances in primary auxin-responsive Aux/IAA gene family: a review[J]. Journal of Zhejiang A&F University, 2015, 32(2): 313-318. doi: 10.11833/j.issn.2095-0756.2015.02.021
Citation: SIMA Xiaojiao, ZHENG Bingsong. Advances in primary auxin-responsive Aux/IAA gene family: a review[J]. Journal of Zhejiang A&F University, 2015, 32(2): 313-318. doi: 10.11833/j.issn.2095-0756.2015.02.021

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