Identification and Characterization of the HD-Zip Gene Family and Dimerization Analysis of HB7 and HB12 in Brassica napus L

Homeodomain-leucine zipper (HD-Zip) genes encode plant-specific transcription factors, which play important roles in plant growth, development, and response to environmental stress. These genes have not been fully studied in allopolyploid , an important kind of oil crop. In this study, 165 HD-Zip ge...

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Bibliographic Details
Published in:Genes 2022-11, Vol.13 (11), p.2139
Main Authors: Peng, Xiangyong, Wu, Di, Zhang, Xin, Liu, Qingwei, Lu, Qiuli, Song, Min
Format: Article
Language:English
Subjects:
Bioinformatics
Brassica napus
Brassica napus - genetics
Cloning
Dimerization
Environmental stress
Gene Expression Regulation, Plant - genetics
Genes
Genome, Plant
Genomes
Homeobox
Homeodomain Proteins - genetics
Leucine zipper proteins
Localization
Oilseeds
Phylogenetics
Phylogeny
Proteins
Rape plants
Sodium chloride
Transcription factors
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Summary:Homeodomain-leucine zipper (HD-Zip) genes encode plant-specific transcription factors, which play important roles in plant growth, development, and response to environmental stress. These genes have not been fully studied in allopolyploid , an important kind of oil crop. In this study, 165 HD-Zip genes were identified in and classified into four subfamilies. If proteins belong to the same subfamily, they exhibit similarities in gene structure, motifs, and domain distribution patterns. BnHD-Zip genes were unevenly distributed in the An and Cn subgenomes. Whole genome triplication (WGT) events may be major mechanisms accounting for this gene family expansion. Orthologous gene analysis showed that the process of this gene family expansion was accompanied by domain loss. We further found three genes homologous to HB7 and three genes homologous to HB12, all induced by PEG, ABA, and NaCl treatment. HB7 could not form homodimers but could form heterodimers with HB12 based on yeast two-hybrid assays. The results of this study provide valuable information for further exploration of the HD-Zip gene family in .
ISSN:2073-4425
2073-4425
DOI:10.3390/genes13112139