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Volume 9
Issue 2
10.3390/genes9020070
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Article

Genome-Wide Identification and Expression Analysis of the HD-Zip Gene Family in Wheat (Triticum aestivum L.)

by
Hong Yue
1,2,†,
Duntao Shu
2,†,
Meng Wang
1,
Guangwei Xing
1,
Haoshuang Zhan
1,
Xianghong Du
1,
Weining Song
1 and
Xiaojun Nie
1,*
1
College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling 712100, China
2
College of Life Sciences, Northwest A&F University, Yangling 712100, China
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Genes 2018, 9(2), 70; https://doi.org/10.3390/genes9020070
Received: 11 December 2017 / Revised: 23 January 2018 / Accepted: 26 January 2018 / Published: 1 February 2018
(This article belongs to the Special Issue Genetic Regulation of Abiotic Stress Responses)
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Abstract

The homeodomain-leucine zipper (HD-Zip) gene family, as plant-specific transcription factors, plays an important role in plant development and growth as well as in the response to diverse stresses. Although HD-Zip genes have been extensively studied in many plants, they had not yet been studied in wheat, especially those involved in response to abiotic stresses. In this study, 46 wheat HD-Zip genes were identified using a genome-wide search method. Phylogenetic analysis classified these genes into four groups, numbered 4, 5, 17 and 20 respectively. In total, only three genes with A, B and D homoeologous copies were identified. Furthermore, the gene interaction networks found that the TaHDZ genes played a critical role in the regulatory pathway of organ development and osmotic stress. Finally, the expression profiles of the wheat HD-Zips in different tissues and under various abiotic stresses were investigated using the available RNA sequencing (RNA-Seq) data and then validated by quantitative real-time polymerase chain reaction (qRT-PCR) to obtain the tissue-specific and stress-responsive candidates. This study systematically identifies the HD-Zip gene family in wheat at the genome-wide level, providing important candidates for further functional analysis and contributing to the better understanding of the molecular basis of development and stress tolerance in wheat. View Full-Text
Keywords: HD-Zip; gene family; wheat; abiotic stress; expression profiles HD-Zip; gene family; wheat; abiotic stress; expression profiles
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MDPI and ACS Style

Yue, H.; Shu, D.; Wang, M.; Xing, G.; Zhan, H.; Du, X.; Song, W.; Nie, X. Genome-Wide Identification and Expression Analysis of the HD-Zip Gene Family in Wheat (Triticum aestivum L.). Genes 2018, 9, 70. https://doi.org/10.3390/genes9020070

AMA Style

Yue H, Shu D, Wang M, Xing G, Zhan H, Du X, Song W, Nie X. Genome-Wide Identification and Expression Analysis of the HD-Zip Gene Family in Wheat (Triticum aestivum L.). Genes. 2018; 9(2):70. https://doi.org/10.3390/genes9020070

Chicago/Turabian Style

Yue, Hong, Duntao Shu, Meng Wang, Guangwei Xing, Haoshuang Zhan, Xianghong Du, Weining Song, and Xiaojun Nie. 2018. "Genome-Wide Identification and Expression Analysis of the HD-Zip Gene Family in Wheat (Triticum aestivum L.)" Genes 9, no. 2: 70. https://doi.org/10.3390/genes9020070

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