Genome-wide analysis and identification of KT/HAK/KUP potassium transporter gene family in peach (Prunus persica)

文献类型： 外文期刊

第一作者： Song, Z. Z.

作者： Song, Z. Z.;Ma, R. J.;Yu, M. L.

作者机构：

关键词： Prunus persica;Potassium transporter;KT/HAK/KUP family;Genome-wide analysis

期刊名称：GENETICS AND MOLECULAR RESEARCH （ 影响因子：0.764； 五年影响因子：0.912 ）

ISSN： 1676-5680

年卷期： 2015 年 14 卷 1 期

页码：

收录情况： SCI

摘要： The KT/HAK/KUP family members encoding highaffinity potassium (K+) transporters mediate K+ transport across the plasma membranes of plant cells to maintain plant normal growth and metabolic activities. In this paper, we identified 16 potassium transporter genes in the peach (Prunus persica) using the Hidden Markov model scanning strategy and searching the peach genome database. Utilizing the Arabidopsis KT/HAK/KUP family as a reference, phylogenetic analysis indicates that the KT/HAK/KUP family in the peach can be classified into 3 groups. Genomic localization indicated that 16 KT/HAK/KUP family genes were well distributed on 7 scaffolds. Gene structure analysis showed that the KT/HAK/KUP family genes have 6-9 introns. In addition, all of the KT/HAK/KUP family members were hydrophobic proteins; they exhibited similar secondary structure patterns and homologous tertiary structures. Putative cis-elements involved in abiotic stress adaption, Ca2+ response, light and circadian rhythm regulation, and seed development were observed in the promoters of the KT/HAK/KUP family genes. Subcellular localization prediction indicated that the KT/HAK/KUP members were mainly located in the plasma membrane. Expression levels of the KT/HAK/KUP family genes were much higher in the fruit and flower than those in the other 7 tissues examined, indicating that the KT/HAK/KUP family genes may have important roles in K+ uptake and transport, which mainly contribute to flower formation and fruit development in the peach.

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