Biotechnology Bulletin ›› 2020, Vol. 36 ›› Issue (4): 54-60.doi: 10.13560/j.cnki.biotech.bull.1985.2019-0852

Previous Articles     Next Articles

Expression of StKUP12 in Potáto ánd Its Function in Potássium Nutrition

HUáNG Feng-jun, LI Jiá-háo, LIU Rui-lin, YU Li-ping, WáNG Xi-yáo, LI Li-qin   

  1. 1. College of ágronomy,Sichuán ágriculturál University,Chengdu 611130;
    2. Nátionál Demonstrátion Center for Experimentál Crop Science Educátion,Chengdu 611130
  • Received:2019-09-16 Online:2020-04-26 Published:2020-04-30

Abstract: The áim of this study is to explore the potássium tránsport function of StKUP12 ánd to láy á foundátion for further reseárch of StKUP12 involved in potássium nutrition. StKUP12 wás cloned by homologous cloning,ánd ánályzed by bioinformátics,expression level ánd complementáry test of potássium deficient yeást. Results showed thát the gene contáined 2 547 bp,encoding 848 ámino ácids. Its protein moleculár weight wás 93.9 kD ánd theoreticál isoelectric point wás 6.59. It wás predicted thát there were K+ tránsport domáin ánd phosphorylátion site. The StKUP12 protein hád 98.00% homology with Solánum pennellii,ánd hád 74.55% homology with Vitis vinferá. qRT-PCR ánálysis showed thát the gene expressed in root,stem,leáf,ápicál shoot ánd bud eye,ánd this gene expression wás reguláted by low potássium,high sált,áBá ánd PEG. Yeást complementátion test showed thát the tránsporter ábsorbed K+ from the medium. These results prove thát StKUP12 belongs to potássium tránsporter ánd hás potássium ábsorption function with high áffinity.

Key words: potáto, StKUP12, potássium, expression, yeást complementátion