This work was supported by grants from the Special Research Program for Public-welfare Forestry of China (201004035), Key Project and Specialized Research Fund for Young Scholars of the Research Institute of Forestry, Chinese Academy of Forestry (No. ZD200911 and RIF2010-06) and National Natural Science Foundation of China (No. 31100454).
Genome-wide and molecular evolution analysis of the Poplar KT/HAK/KUP potassium transporter gene family
Article first published online: 19 JUL 2012
© 2012 The Authors. Ecology and Evolution published by Blackwell Publishing Ltd.
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Ecology and Evolution
Volume 2, Issue 8, pages 1996–2004, August 2012
How to Cite
He, C., Cui, K., Duan, A., Zeng, Y. and Zhang, J. (2012), Genome-wide and molecular evolution analysis of the Poplar KT/HAK/KUP potassium transporter gene family. Ecology and Evolution, 2: 1996–2004. doi: 10.1002/ece3.299
- Issue published online: 6 AUG 2012
- Article first published online: 19 JUL 2012
- Manuscript Accepted: 15 MAY 2012
- Manuscript Revised: 12 MAY 2012
- Manuscript Received: 2 MAR 2012
- Special Research Program for Public-welfare Forestry of China. Grant Number: 201004035
- Chinese Academy of Forestry. Grant Numbers: ZD200911, RIF2010-06
- National Natural Science Foundation of China. Grant Number: 31100454
- Asymmetric evolutionary rates;
- KT/HAK/KUP family;
- segmental duplication;
- tandem duplication.
As the largest K + transport gene family, KT/HAK/KUP family plays an important role in plant growth, development, and stress adaptation. However, there is limited information about this family in woody plant species. In this study, with genome-wide in-depth investigation, 31 Poplar KT/HAK/KUP transporter genes including six pairs of tandem duplicated and eight pairs of segmental duplicated paralogs have been identified, suggesting segmental and tandem duplication events contributed to the expansion of this family in Poplar. The combination of phylogenetic, exon structure and splice site, and paragon analysis revealed 11 pairs of Poplar KT/HAK/KUP duplicates. For these 11 pairs, all pairs are subject to purify selection, and asymmetric evolutionary rates have been found to occur in three pairs. This study might provide more insights into the underlying evolution mechanisms of trees acclimating to their natural habitat.