Open AccessGenome‐wide and molecular evolution analysis of the P oplar KT / HAK / KUP potassium transporter gene family
Author(s) -
He Caiyun,
Cui Kai,
Duan Aiguo,
Zeng Yanfei,
Zhang Jianguo
Publication year - 2012
Publication title -
ecology and evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.17
H-Index - 63
ISSN - 2045-7758
DOI - 10.1002/ece3.299
Subject(s) - biology , gene , gene family , phylogenetic tree , gene duplication , genome , tandem exon duplication , genetics , segmental 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 P oplar 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 P oplar. The combination of phylogenetic, exon structure and splice site, and paragon analysis revealed 11 pairs of P oplar 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.