Journal article
Genome-wide analysis of the auxin/indoleacetic acid (Aux/IAA) gene family in allotetraploid rapeseed (Brassica napus L.)
BMC Plant Biology, Vol.17(1), pp.204-218
2017
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Source: InCites
Abstract
<p>Background: <em>Auxin/Indoleacetic acid (Aux/IAA)</em> genes participate in the auxin signaling pathway and play key roles in plant growth and development. Although the <em>Aux/IAA</em> gene family has been identified in many plants, within allotetraploid <em>Brassica napus</em> little is known.<br />Results: In this study, a total of 119 <em>Aux/IAA</em> genes were found in the genome of <em>B. napus</em>. They were distributed non-randomly across all 19 chromosomes and other non-anchored random scaffolds, with a symmetric distribution in the A and C subgenomes. Evolutionary and comparative analysis revealed that 111 (94.1%) <em>B. napus Aux/IAA</em> genes were multiplied due to ancestral <em>Brassica</em> genome triplication and recent allotetraploidy from <em>B. rapa</em> and <em>B. oleracea</em>. Phylogenetic analysis indicated seven subgroups containing 29 orthologous gene sets and two <em>Brassica</em>-specific gene sets. Structures of genes and proteins varied across different genes but were conserved among homologous genes in <em>B. napus</em>. Furthermore, analysis of transcriptional profiles revealed that the expression patterns of <em>Aux/IAA</em> genes in <em>B. napus</em> were tissue dependent. Auxin-responsive elements tend to be distributed in the proximal region of promoters, and are significantly associated with early exogenous auxin up-regulation.<br />Conclusions: Members of the <em>Aux/IAA</em> gene family were identified and analyzed comprehensively in the allotetraploid <em>B. napus</em> genome. This analysis provides a deeper understanding of diversification of the <em>Aux/IAA</em> gene family and will facilitate further dissection of <em>Aux/IAA</em> gene function in <em>B. napus.</em></p>
Details
- Title
- Genome-wide analysis of the auxin/indoleacetic acid (Aux/IAA) gene family in allotetraploid rapeseed (Brassica napus L.)
- Creators
- Haitao Li - Huazhong Agricultural UniversityBo Wang - Huazhong Agricultural UniversityQinghua Zhang - Huazhong Agricultural UniversityJing Wang - Huazhong Agricultural UniversityGraham J King - Southern Cross UniversityKede Liu - Huazhong Agricultural University
- Publication Details
- BMC Plant Biology, Vol.17(1), pp.204-218
- Identifiers
- 1949; 991012821510202368
- Academic Unit
- Faculty of Science and Engineering; Southern Cross Plant Science; Science
- Resource Type
- Journal article