Comparative proteomic analysis for revealing the advantage mechanisms of salt-tolerant tomato ( Solanum lycoperscium )

PeerJ

article

Qiang Wang¹  Baike Wang²  Huifang Liu²  Hongwei Han²  Hongmei Zhuang²  Juan Wang²  Tao Yang²  Hao Wang²  Yong Qin¹ 

[1] College of Horticulture, Xinjiang Agricultural University;Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences

关键词: Tomato (Solanum lycoperscium);    Salt-tolerant;    Proteome;    Salt tolerant variety;   

DOI  :  10.7717/peerj.12955

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Salt stress causes the quality change and significant yield loss of tomato. However, the resources of salt-resistant tomato were still deficient and the mechanisms of tomato resistance to salt stress were still unclear. In this study, the proteomic profiles of two salt-tolerant and salt-sensitive tomato cultivars were investigated to decipher the salt-resistance mechanism of tomato and provide novel resources for tomato breeding. We found high abundance proteins related to nitrate and amino acids metabolismsin the salt-tolerant cultivars. The significant increase in abundance of proteins involved in Brassinolides and GABA biosynthesis were verified in salt-tolerant cultivars, strengthening the salt resistance of tomato. Meanwhile, salt-tolerant cultivars with higher abundance and activity of antioxidant-related proteins have more advantages in dealing with reactive oxygen species caused by salt stress. Moreover, the salt-tolerant cultivars had higher photosynthetic activity based on overexpression of proteins functioned in chloroplast, guaranteeing the sufficient nutrient for plant growth under salt stress. Furthermore, three key proteins were identified as important salt-resistant resources for breeding salt-tolerant cultivars, including sterol side chain reductase, gamma aminobutyrate transaminase and starch synthase. Our results provided series valuable strategies for salt-tolerant cultivars which can be used in future.

【 授权许可】

CC BY