| Title |
Molecular evolution and gene expression differences within the HD-Zip transcription factor family of Zea mays L.
|
|---|---|
| Published in |
Genetica, March 2016
|
| DOI | 10.1007/s10709-016-9896-z |
| Pubmed ID | |
| Authors |
Hude Mao, Lijuan Yu, Zhanjie Li, Hui Liu, Ran Han |
| Abstract |
Homeodomain-leucine zipper (HD-Zip) transcription factors regulate developmental processes and stress responses in plants, and they vary widely in gene number and family structure. In this study, 55 predicted maize HD-Zip genes were systematically analyzed with respect to their phylogenetic relationships, molecular evolution, and gene expression in order to understand the functional diversification within the family. Phylogenetic analysis of HD-Zip proteins from Zea mays, Oryza sativa, Arabidopsis thaliana, Vitis vinifera, and Physcomitrella patens showed that they group into four classes. We inferred that the copy numbers of classes I and III genes were relatively conserved in all five species. The 55 maize HD-Zip genes are distributed randomly on the ten chromosomes, with 15 segmental duplication and 4 tandem duplication events, suggesting that segmental duplications were the major contributors in the expansion of the maize HD-Zip gene family. Expression analysis of the 55 maize HD-Zip genes in different tissues and drought conditions revealed differences in the expression levels and patterns between the four classes. Promoter analysis revealed that a number of stress response-, hormone response-, light response-, and development-related cis-acting elements were present in their promoters. Our results provide novel insights into the molecular evolution and gene expression within the HD-Zip gene family in maize, and provide a solid foundation for future functional study of the HD-Zip genes in maize. |
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 19 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 19 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 4 | 21% |
| Student > Master | 4 | 21% |
| Student > Bachelor | 2 | 11% |
| Researcher | 2 | 11% |
| Student > Doctoral Student | 1 | 5% |
| Other | 3 | 16% |
| Unknown | 3 | 16% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 10 | 53% |
| Biochemistry, Genetics and Molecular Biology | 5 | 26% |
| Psychology | 1 | 5% |
| Unknown | 3 | 16% |
Attention Score in Context
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