›› 2019, Vol. 31 ›› Issue (8): 1224-1230.DOI: 10.3969/j.issn.1004-1524.2019.08.02

• Crop Science • Previous Articles     Next Articles

Cloning and sequence analysis of StBSKs gene of Solanum tuberosum

MA Jie1,2, ZHENG Hao1, ZHOU Ping2, CHEN Chunyan2, WU Rui2, MA Wei2, SONG Lei2, SUN Bo1,*   

  1. 1. College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China;
    2. Bijie Institute of Agricultural Science, Bijie 551700, China
  • Received:2019-04-08 Online:2019-08-25 Published:2019-08-30

Abstract: Brassinolide (BR) is a kind of plant hormone that participates in the regulation of plant growth and environmental resistance. Brassinolide signal kinase (BSKs) is an important signal transduction kinase in BR signaling pathway. Solanum tuberosum used as material and specific primers were designed by homologous sequence retrieval. Seven genes of the StBSK gene family were cloned by RT-PCR technology, and respectively named StBSK1, StBSK2, StBSK3, StBSK4, StBSK5, StBSK6 and StBSK7. Total length of coding sequences were 1 497, 1 479, 1 464, 1 461, 1 476, 1 476 and 1 476 bp that encoded 498, 492, 487, 486, 491, 491 and 491 amino acid protein, respectively. Bioinformatics analysis showed that the isoelectric points of StBSKs protein were weakly acidic between 5.14 and 6.37, and these seven proteins had no transmembrane domain and signal peptide. Amino acid sequence alignment revealed that the amino acid sequences of StBSKs protein were different in N-terminal. Phylogenetic tree analysis showed that StBSKs protein was more closely related to the same species. The results of this study enriched the knowledge of the StBSKs gene and laid a foundation for further study on StBSKs gene function in Solanum tuberosum.

Key words: Solanum tuberosum, brassinolide signal kinase (BSK), amino acid sequence, phylogenetic tree

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