Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (2): 75-84. doi: 10.7668/hbnxb.20193489

Special Issue: Tomato Biotechnology Vegetables

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Cloning and Expression of SlCaM3,SlCaM4 and SlCaM5 Genes under Cold Stress in Tomato

WANG Peng1, TIAN Zhejuan1, ZHAO Xuefang1, KANG Chen1, WU Zhiming1,2, LI Yadong1,2, HUANG Jinan3   

  1. 1. Institute of Cash Crops,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050051,China
    2. Hebei Engineering and Technique Research Center for Vegetable,Shijiazhuang 050051,China
    3. Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Science, Shijiazhuang 050035
  • Received:2023-01-07 Published:2023-04-28

Abstract:

Calmodulin is an important Ca2+ receptor protein in plants,which plays an important role in calcium signaling pathway and stress resistance.It is of great significance to study the mechanism of CaM protein in tomato under low temperature stress for cold tolerance breeding of tomato.Tomato calmodulin genes SlCaM3, SlCaM4 and SlCaM5 were cloned from tomato varieties Heinz1706,LA3969,Jifen 2,Jifen 3 and Nongbofenba 15,and their sequences and protein sequences were analyzed by bioinformatics;the cis acting elements in the promoter regions of SlCaM3,SlCaM4 and SlCaM5 were analyzed by plantcare;Quantitative Real-time PCR was used to analyze the expression patterns of SlCaM3,SlCaM4 and SlCaM5 under 15,5 ℃ temperature stress in different tomato varieties,and the specific expression of SlCaM3,SlCaM4 and SlCaM5 in different tissues was analyzed in combination with RNA-seq data.The results showed that the coding sequence of SlCaM3,SlCaM4 and SlCaM5 were 450 bp,and their similarity was 93.63%;the encoded amino acid sequences were identical,belonging to acidic stable hydrophilic protein with typical conservative domain of cam protein.The analysis of cis acting elements showed that the promoter regions of the three genes contained not only the necessary core elements,but also a variety of biotic and abiotic stress response elements,and showed a complementary pattern.The analysis of the expression patterns of different degrees of low temperature stress showed that the expression patterns of SlCaM3,SlCaM4 and SlCaM5 in five tomato materials showed a trend of first decreasing and then increasing at 15 ℃,and the expression of SlCaM5 increased more significantly.At 5 ℃,SlCaM3 and SlCaM4 did not change significantly,but the expression level of SlCaM5 gene increased significantly in the later stage of treatment.The high expression of SlCaM5 gene in the process of tomato resistance to low temperature indicated that it maintained the translation level of cam protein under low temperature and ensured that the function of CaM protein was not affected.The analysis of SlCaM3,SlCaM4 and SlCaM5 specific expression in different tissues of Heinz1706 showed that SlCaM3 and SlCaM4 were highly expressed in meristem,while the expression of SlCaM5 different tissues was not significantly different.

Key words: Tomato, Calmodulin, Cold, Gene cloning, qRT-PCR, Expression analysis

Cite this article

WANG Peng, TIAN Zhejuan, ZHAO Xuefang, KANG Chen, WU Zhiming, LI Yadong, HUANG Jinan. Cloning and Expression of SlCaM3,SlCaM4 and SlCaM5 Genes under Cold Stress in Tomato[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(2): 75-84. doi: 10.7668/hbnxb.20193489.

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