文献类型：期刊文献

英文题名：Genome-wide and molecular evolution analysis of the Poplar KT/HAK/KUP potassium transporter gene family

作者：He, Caiyun[1] Cui, Kai[1] Duan, Aiguo[1] Zeng, Yanfei[1] Zhang, Jianguo[1]

第一作者：何彩云

通信作者：Zhang, JG[1]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Key Lab Silviculture State Forestry Adm, Res Inst Forestry, Beijing 100091, Peoples R China

年份：2012

卷号：2

期号：8

起止页码：1996-2004

外文期刊名：ECOLOGY AND EVOLUTION

收录：;Scopus(收录号：2-s2.0-84890284265);WOS:【SCI-EXPANDED(收录号:WOS:000312448700020)】；

基金：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).

语种：英文

外文关键词：Asymmetric evolutionary rates; KT/HAK/KUP family; segmental duplication; tandem duplication

摘要：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.