Global Analysis of WOX Transcription Factor Gene Family in Brassica napus Reveals Their Stress- and Hormone-Responsive Patterns

The plant-specific ( ) transcription factor gene family is important for plant growth and development but little studied in oil crops. We identified and characterized 58 putative genes in ( s), which were divided into three major clades and nine subclades based on the gene structure and conserved mo...

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Bibliographic Details
Published in:	International journal of molecular sciences 2018-11, Vol.19 (11), p.3470
Main Authors:	Wang, Mang-Mang, Liu, Ming-Ming, Ran, Feng, Guo, Peng-Cheng, Ke, Yun-Zhuo, Wu, Yun-Wen, Wen, Jing, Li, Peng-Feng, Li, Jia-Na, Du, Hai
Format:	Article
Language:	eng
Subjects:	Amino Acid Sequence Amino acids Brassica napus Brassica napus - genetics Brassica napus L Chromosomes Chromosomes, Plant - genetics Collinearity Conserved Sequence - genetics Environment Evolution Exons expression analysis Gene Duplication Gene expression Gene Expression Regulation, Developmental - drug effects Gene Expression Regulation, Plant - drug effects Genes Genes, Plant Genomes Homeobox Homeostasis Introns Introns - genetics Localization Meristems Multigene Family Nucleotide Motifs - genetics Oilseeds Organs Peptides phylogenetic analysis Phylogenetics Phylogeny Plant Growth Regulators - pharmacology Plant Proteins - chemistry Plant Proteins - genetics Plant Proteins - metabolism Polymerase chain reaction Protein Interaction Maps - genetics Proteins Rape plants Seedlings Stem cells Stress, Physiological - drug effects Stress, Physiological - genetics Structural analysis Transcription Factors - chemistry Transcription Factors - genetics Transcription Factors - metabolism WOX family
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Summary:	The plant-specific ( ) transcription factor gene family is important for plant growth and development but little studied in oil crops. We identified and characterized 58 putative genes in ( s), which were divided into three major clades and nine subclades based on the gene structure and conserved motifs. Collinearity analysis revealed that most s were the products of allopolyploidization and segmental duplication events. Gene structure analysis indicated that introns/exons and protein motifs were conserved in each subclade and RNA sequencing revealed that s had narrow expression profiles in major tissues and/or organs across different developmental stages. The expression pattern of each clade was highly conserved and similar to that of the sister and orthologous pairs from and . Quantitative real-time polymerase chain reaction showed that members of the WOX4 subclade were induced in seedling roots by abiotic and hormone stresses, indicating their contribution to root development and abiotic stress responses. 463 proteins were predicted to interact with Bn s, including peptides regulating stem cell homeostasis in meristems. This study provides insights into the evolution and expression of the WOX gene family in and will be useful in future gene function research.
ISSN:	1422-0067 1661-6596 1422-0067