Comparative Multi-Omits of Tender Shoots from a Novel Evergrowing Tea Cultivar Provide Insight into the Winter Adaptation Mechanism
文献类型: 外文期刊
第一作者: Dai, Zhangyan
作者: Dai, Zhangyan;Zhang, Qunjie;Bei, Jinlong;Chen, Zhongjian;Liu, Qinjian;Gao, Jiadong;Liu, Jun;Dai, Zhangyan;Zhang, Qunjie;Bei, Jinlong;Chen, Zhongjian;Liu, Qinjian;Gao, Jiadong;Liu, Jun;Huang, Hualin;Liu, Jun;Zhang, Sheng
作者机构: Guangdong Acad Agr Sci, Agrobiol Gene Res Ctr, Guangzhou, Peoples R China;Guangdong Key Lab Crop Germplasm Resources Preser, Guangzhou, Peoples R China;Guangdong Acad Agr Sci, Tea Res Inst, Guangzhou, Peoples R China;Cornell Univ, Ithaca, NY 14850 USA
关键词: Evergrowing; Metabolome; Proteome; Tea; Tender shoots; Transcriptome
期刊名称:PLANT AND CELL PHYSIOLOGY ( 2020影响因子:4.927; 五年影响因子:5.516 )
ISSN: 0032-0781
年卷期: 2021 年 62 卷 2 期
收录情况: SCI
摘要: Tea (Camellia sinensis [L] O. Kuntze) tree is a perennial plant in which winter dormancy is an important biological adaptation to environmental changes. We discovered and reported a novel tea tree cultivar that can generate tender shoots in winter several years ago, but the molecular mechanism for this unique phenotype remains unknown . Here, we conducted comparative transcriptomics, proteomics and metabolomics along with phytohormone quantization between the winter and spring tender shoots to investigate the physiological basis and putative regulatory mechanisms of its evergrowing character during winter. Our multi-omits study has led to the following findings. Gibberellin (GA) levels and key enzymes for GA biosynthesis and the signal transduction pathway were increased in the winter shoots, causing the ABA/GA content ratio to decrease, which might play a key regulatory role in maintaining normal growth during winter. The abundance of proteins, genes and metabolites involved in energy metabolism was all increased in winter shoots, indicating that energy is critical for continuous growth under the relatively weak-light and low-temperature environment. Abiotic resistance-related proteins and free amino acids were also increased in abundance in the winter shoots, which possibly represents an adaptation response to winter conditions. These results allowed us to hypothesize a novel molecular mechanism of adaptation for this unique tender shoot evergrowing in winter.
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