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Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (4): 758-768.doi: 10.16420/j.issn.0513-353x.2021-0202

• Research Papers • Previous Articles     Next Articles

Identification and Functional Analysis of HAK/KUP/KT Family Genes in Pomegranate

ZHAO Jianrong1, YANG Yuan1,2, QIN Gaihua2,*(), LIU Chunyan2, YU Qing2,3, JIA Botao2, SU Ying2,3, CAO Zhen2, LI Jiyu2,*()   

  1. 1. College of Resource and Environment,Anhui Science and Technology University,Fengyang,Anhui 233100,China
    2. Key Laboratory of Horticultural Crop Genetic Improvement and Eco-physiology of Anhui Province,Key Laboratory of Fruit Quality and Developmental Biology,Institute of Horticulture Research,Anhui Academy of Agricultural Sciences,Hefei 230001,China
    3. College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China
  • Received:2021-11-23 Revised:2022-01-12 Online:2022-04-25 Published:2022-04-24
  • Contact: QIN Gaihua,LI Jiyu E-mail:qghahstu@163.com;lijiyugx@163.com

Abstract:

In order to fully understand the mechanism of K+ uptake,bioinformatics analysis and function study of related genes of HAK/KUP/KT family in pomegranate were carried out in this study. Eighteen of HAK/KUP/KT family genes each encoded 689-837 amino acids were identified from the pomegranate genome. The promoter region contains several regulatory elements related to stress,and the gene-coding proteins contain a K+ transport domain(GVVYGDLGTSPLY). Phylogenetic analysis showed that the HAK/KUP/KT family genes of pomegranate,Arabidopsis thaliana,grape and pear could be divided into four clusters(Ⅰ-Ⅳ). RNA-seq analysis showed that most genes of cluster Ⅱ and cluster Ⅲ were expressed in different tissues of pomegranate,while PgrHAK5 in clusterⅠwas only specifically expressed in roots. qRT-PCR analysis showed that PgrHAK5 was highly expressed in roots,and its expression was induced by potassium deficiency stress. Subcellular localization indicated that the protein encoded by PgrHAK5 was localized on the plasma membrane,and PgrHAK5 can complement the defect of the yeast K+ transport mutant CY162,which suggest that PgrHAK5 play an important role in K+ transport in pomegranate roots.

Key words: pomegranate, potassium transporters, PgrHAK5, functional

CLC Number: