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Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (11): 2293-2303.doi: 10.16420/j.issn.0513-353x.2021-0764

• Research Papars •     Next Articles

Study on Expression and Anthocyanin Accumulation of Solute Carrier Gene MdSLC35F2-like in Apple

WANG Zhiyu1,2, CHANG Beibei1,2, LIU Qi1,2, CHENG Xiaofan1,2, DU Xiaoyun1, YU Xiaoli1, SONG Laiqing1,*(), ZHAO Lingling1,*()   

  1. 1Key Laboratory of Apple Germplasm Innovation and Quality Control of Yantai,Yantai Academy of Agricultural Sciences,Yantai,Shandong 265500,China
    2College of Life Sciences,Yantai University,Yantai,Shandong 264005,China
  • Received:2022-06-06 Revised:2022-07-15 Online:2022-11-25 Published:2022-11-25
  • Contact: SONG Laiqing,ZHAO Lingling E-mail:sdslq@126.com;zhaolingling122@163.com

Abstract:

Anthocyanin is the main pigment affecting the skin color of apple fruit. In our previous study,MdSLC35F2-like was expressed at higher levels in the‘Nagafu 2’apple red bud mutant than in the wild-type. The open reading frame(ORF)of MdSLC35F2-like was cloned,it is 1 041bp,encoding 346 amino acids,which was predicted to be a hydrophobic α helix transmembrane protein with the highest homology to the PbSLC35F1-like of Pyrus × bretschneideri. Phylogenetic analysis showed that it had the closest evolutionary relationship with P. × bretschneideri,and the furthest evolutionary relationship with Theobroma cacao and Eucalyptus grandis. MdSLC35F2-like sequence and its expression rules before and after the fruit bagging were analyzed. After unbagging,the expression level of MdSLC35F2-like increased firstly,and then decreased with a peak on the third day. The expression level of MdSLC35F2-like in the two kinds of buds was significantly higher than that of‘Nagafu 2’. The above results indicated that the expression level of MdSLC35F2-like gene is positively correlated with anthocyanine content. Meanwhile,its expression levels in different color apple cultivars were compared. The expression of MdSLC35F2-like in red peel cultivars was significantly higher than that in green peel cultivars,and the expression level in red pulp cultivars was higher than that in non-red pulp cultivars. It suggests that MdSLC35F2-like may participate in the anthocyanine accumulation process.

Key words: apple, anthocyanin, MdSLC35F2-like expression analysis

CLC Number: