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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (3): 534-548.doi: 10.16420/j.issn.0513-353x.2022-0003

• Research Papers • Previous Articles     Next Articles

Identification and Low Temperature Expression Analysis of MYB Transcription Factor Family in Kiwifruit

MAO Kexin1,2, AN Miao1, WANG Hairong1, WANG Shijin3, LÜ Wei2, GUO Yingtian1, LI Jian1,*(), LI Guotian1,*()   

  1. 1Shandong Institute of Pomology,Tai’an,Shandong 271000,China
    2Shandong Agricultural University,Tai’an,Shandong 271018,China
    3North Kiwifruit(Rizhao)Technology Research Institute,Rizhao,Shandong 276800,China

Abstract:

In this paper,277 MYB family genes were identified through the genome of Actinidia chinensis‘Hongyang’. The MYBs were classified into 12 subclasses(S1-S12),most of the sequences belong to R2R3-MYB,followed by MYB-related proteins,and only one 4R-MYB identified. S11 and S12 were at an earlier evolutionary position with more diverse response structures,never the less S1 and S2 were at a later evolutionary position. The cis-acting element analysis showed that the main related phytohormones elements of this family are salicylic acid,gibberellin,and methyl jasmonate,further,there are elements partly involved in the regulation of circadian rhythm,low temperature,and cell cycle,etc. Codon preference analysis showed that the kiwifruit MYB family had three high-frequency codons (UUG,AGA and AGG). The codon preference of the gene was A/T,and the third base preference was stronger. Through the cis-acting elements and transcriptional data of four varieties kiwifruit in winter,nine MYB genes which possible response to cold stress. It was confirmed that these genes were involved in the response to low temperature by detecting and verifying in Actinidia arguta‘Longcheng 2’.

Key words: kiwifruit, MYB family, codon usage bias, low temperature stress, expression

CLC Number: