ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (S1): 102-108. doi: 10.7668/hbnxb.20191207

• Crop Genetics and Breeding·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

2-DE Analysis of Cold-response Specific Proteins in Cortex of Branches in Peach Tree

LI Yonghong1, ZHOU Yuchao2, TIAN Qihang1, CHANG Ruifeng1, LIU Guojian1, CHEN Hu1, WANG Zhaoyuan1   

  1. 1. Changli Fruit Institute, Hebei Academy of Agriculture and Forestry Sciences, Changli 066600, China;
    2. Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China
  • Received:2020-03-23 Published:2020-12-28

Abstract: Cold stress is a major environmental factor that limits peach growth,development reproduction and distribution. Clarifying the molecular mechanism of peach in response to low temperature stress could provide the research basis for cultivating and screening relatively cold resistant peach varieties. In cold-tolerant peach cultivar Qiuyan were selected as testing materials. 1 year dormant branches were exposed to-5(the control),-15,-25℃under controlled environment chamber for 48 h respectively. Two-dimensional electrophoresis(2-DE)were used to analyze proteomics of cortex of branches under 3 different low temperature treatments. The results showed that a total of 150 differentially expressed proteins were identified by mass spectrometry,97 significantly up-regulated proteins and 53 significantly down-regulated after cold stress. After further analysis of the protein spots by proteome data retrieval,20 proteins related to cold stress were identified,involving amino sugar and nucleotide sugar metabolism,starch and sucrose metabolism,amino acid metabolism,MAPK signaling pathway,phenylalanine metabolism and DNA replication. In addition,Real-time PCR (RT-PCR) indicated that three candidate protein-encoding genes Alpha-amylase(M5VVU6),Chlorophyll a/b binding protein(M5WUQ0)and Epoxide hydrolase 3(D8L7V9)were up-regulated with the increase of cold stress. It suggested that these metabolic pathways and three specific proteins might play an important role in the cold-resistant mechanism in peach.

Key words: Peach, Two-dimensional electrophoresis (2-DE), Specific proteins, Cold tolerance

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Cite this article

LI Yonghong, ZHOU Yuchao, TIAN Qihang, CHANG Ruifeng, LIU Guojian, CHEN Hu, WANG Zhaoyuan. 2-DE Analysis of Cold-response Specific Proteins in Cortex of Branches in Peach Tree[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(S1): 102-108. doi: 10.7668/hbnxb.20191207.

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