Biotechnology Bulletin ›› 2021, Vol. 37 ›› Issue (12): 1-12.doi: 10.13560/j.cnki.biotech.bull.1985.2021-0184

    Next Articles

Genome-wide Identification of Gro/Tup1 Gene Family in Camellia sinensis and Their Expression Analysis Under Exogenous Phytohormones and Abiotic Stress Treatments

ZHAN Dong-mei1(), ZHU Chen1,2, ZHOU Cheng-zhe1,2, HUANG Xue-ting1, LAI Zhong-xiong1,2, GUO Yu-qiong1,2()   

  1. 1. College of Horticulture /Key Laboratory of Tea Science of Fujian Province/Tea Industry Research Institute,Fujian Agriculture and Forestry University,Fuzhou 350002
    2. Institute of Horticultural Biotechnology,Fujian Agriculture and Forestry University,Fuzhou 350002
  • Received:2021-02-14 Online:2021-12-26 Published:2022-01-19
  • Contact: GUO Yu-qiong E-mail:dongmeizhan@foxmail.com;guoyq828@163.com

Abstract:

The objective of this work is to clarify the number and structure of the co-transcription regulatory factor Groucho/Thymidine uptake 1(CsGro/Tup1)in Camellia sinensis genome,and its expression differences under abiotic stresses and exogenous phytohormones treatments,which will lay a theoretical foundation for revealing the role of Gro/Tup1 in hormone signal transduction pathway and its role in C. sinensis tree stress. The CsGro/Tup1 family members were identified and analyzed. Meanwhile,the physicochemical properties of its encoded proteins,evolutionary relationships,and cis-acting elements of CsGro/Tup1s were investigated,and the relative expression levels of CsGro/Tup1 members were measured under drought,low temperature,GA3,ABA and MeJA treatments. The results showed that the CsGro/Tup1 family had 13 members,which were divided into two subfamilies:TOPLESS/TOPLESS-related(TPL/TPR)and LEUNIG/LEUNIG HOMOLOG(LUG/LUH). The prediction results of cis-acting elements showed that Gro/Tupls’ promoter region had a large number of cis-acting elements in response to GA,ABA,MeJA,drought and low temperature. RT-qPCR results demonstrated that Gro/Tup1s presented different expression patterns under different treatments. In severe drought,the expressions of CsLUG3 and CsLUG4 genes were significantly up-regulated,the expressions of CsTPL2 were inhibited at light drought,CsTPL8 and CsTPL9 were not regulated by drought. The expressions of CsTPL2 and CsTPL3 were significantly up-regulated under low temperature treatment. Under GA3 treatment,most gene expressions were up-regulated. Under ABA treatment,the expressions of most genes significantly increased in the beginning and significantly decreased later. Most of the gene expressions were significantly inhibited under MeJA treatment. In conclusion,C. sinensis has 13 CsGro/Tup1 family members,and their structures are evolutionarily conservative,and CsGro/Tup1s are able to respond to different abiotic stresses and exogenous phytohormone,and their responses present various profiles.

Key words: Camellia sinensis, Groucho/Thymidine uptake 1Gro/Tup1)family, phytohormone, abiotic stress