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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Plant Sci. | doi: 10.3389/fpls.2019.01286

Genome-wide identification and analysis of the AP2 transcription factor gene family in wheat (Triticum aestivum L.)

Yue Zhao1, Renyi Ma1, Dongliang Xu1,  Huihui Bi2*,  Zongliang Xia1 and Huiru Peng3
  • 1College of Life Sciences, Henan Agricultural University, China
  • 2Henan Agricultural University, China
  • 3China Agricultural University (CAU), China

The AP2 transcription factors play important roles in regulating plant growth and development. However, limited data are available on the contributions of AP2 transcription factors in wheat (Triticum aestivum L.). In the present study, a total of 62 AP2 genes were identified in wheat from a genome-wide search against the latest wheat genome data. Phylogenetic analyses divided the wheat AP2 genes into 3 clusters, euAP2, euANT and basalANT. Chromosomal distribution, gene structure and duplication, and motif composition were subsequently investigated. The 62 TaAP2 genes were unevenly distributed on 21 chromosomes. Twenty-four homoeologous gene sets among A, B and D sub-genomes were detected, which contributed to the expansion of the wheat AP2 gene family. The expression levels of TaAP2 genes were examined using the WheatExp database; most detected genes exhibited tissue-specific expression patterns. The transcript levels of 9 randomly selected TaAP2 genes were validated through qPCR analyses. Overexpression of TaAP2-10-5D, the most likely homolog of Arabidopsis ANT gene, increased organ sizes in Arabidopsis. Our results extend our knowledge of the AP2 gene family in wheat, and contribute to further functional characterization of AP2s during wheat development with the ultimate goal of improving crop production.

Keywords: AP2, Arabidopsis, Expression pattern, Organ Size, phylogenetic tree, transgenic, wheat

Received: 23 Jul 2019; Accepted: 13 Sep 2019.

Copyright: © 2019 Zhao, Ma, Xu, Bi, Xia and Peng. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Dr. Huihui Bi, Henan Agricultural University, Zhengzhou, China,