文献类型：期刊文献

英文题名：Multi-Approach Analysis Reveals Pathways of Cold Tolerance Divergence in Camellia japonica

作者：Fan, MengLong[1] Zhang, Ying[1] Li, XinLei[1] Wu, Si[1] Yang, MeiYing[1] Yin, Hengfu[1] Liu, Weixin[1] Fan, Zhengqi[1] Li, Jiyuan[1]

第一作者：Fan, MengLong

通信作者：Li, XL[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou, Peoples R China

年份：2022

卷号：13

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000767763500001)】；

基金：This work was supported by National Key R&D Program of China (2020YFD1000500) and Zhejiang Basic and Public Welfare Research Program (LGN20C160006).

语种：英文

外文关键词：cold; transcriptome; proteome; plant hormone; co-expression; Camellia japonica

摘要：Understanding the molecular mechanism of the cold response is critical to improve horticultural plant cold tolerance. Here, we documented the physiological, transcriptome, proteome, and hormonal dynamics to cold stress in temperate genotype (Tg) and subtropical genotype (Sg) populations of Camellia japonica. Tg C. japonica suffered minimal osmotic and oxidative damage compared to Sg C. japonica under the same cold treatment. Transcriptional and translational differences increased under the cold treatment, indicating that Tg C. japonica was affected by the environment and displayed both conserved and divergent mechanisms. About 60% of the genes responding to cold had similar dynamics in the two populations, but 1,896 transcripts and 455 proteins differentially accumulated in response to the cold between Tg and Sg C. japonica. Co-expression analysis showed that the ribosomal protein and genes related to photosynthesis were upregulated in Tg C. japonica, and tryptophan, phenylpropanoid, and flavonoid metabolism were regulated differently between the two populations under cold stress. The divergence of these genes reflected a difference in cold responsiveness. In addition, the decrease in the abscisic acid (ABA)/gibberellic acid (GA) ratio regulated by biosynthetic signal transduction pathway enhanced cold resistance in Tg C. japonica, suggesting that hormones may regulate the difference in cold responsiveness. These results provide a new understanding of the molecular mechanism of cold stress and will improve cold tolerance in horticultural plants.