Identification and Expression Analysis of Potassium Transporter Gene Family in Apple

doi:10.16420/j.issn.0513-353x.2015-0944；

ACTA HORTICULTURAE SINICA ›› 2016, Vol. 43 ›› Issue (6): 1021-1032.doi: 10.16420/j.issn.0513-353x.2015-0944；

Identification and Expression Analysis of Potassium Transporter Gene Family in Apple

YANG Lin，DONG Ling，LI Ming-jun，MA Feng-wang，and ZOU Yang-jun*

（College of Horticulture，Northwest A & F University，Yangling，Shaanxi 712100，China）

Online:2016-06-25 Published:2016-06-25

Abstract

Abstract:

In this study，the information that contained phylogenetic relationship and distribution of apple potassium（K⁺）transporter genes was analyzed based on Malus genome database，and their expression characteristics were explored by means of qRT-PCRs in apple. The results showed that 65 K⁺ transporter genes were identified，and they were divided into 4 families：CHX family，HAK family，HKT family and KEA family，including 33，24，1 and 7 members，respectively. These genes are highly homologous with Arabidopsis thaliana K⁺ transporter genes. Chromosomal localization exhibited that these K⁺ transporter genes were distributed in the thirteen of seventeen apple chromosomes unevenly. Quantitative expression analysis showed that most of the K⁺ transporter genes had differential expression patterns. The thirty-two genes had higher expression abundance in root while 12 genes in mature leaves，11 genes in shoot tips and 19 genes in fruit. The results lay a basis for revealing the function of K⁺ transporter genes in apple.

Key words: Malus × domestica, potassium transporter, gene family, bioinformatic, expression characteristic

CLC Number:

S 661.1

YANG Lin，DONG Ling，LI Ming-jun，MA Feng-wang，and ZOU Yang-jun* . Identification and Expression Analysis of Potassium Transporter Gene Family in Apple[J]. ACTA HORTICULTURAE SINICA, 2016, 43(6): 1021-1032.

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Identification and Expression Analysis of Potassium Transporter Gene Family in Apple

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