Author:
Gai Zhongshuai,Wang Yu,Ding Yiqian,Qian Wenjun,Qiu Chen,Xie Hui,Sun Litao,Jiang Zhongwu,Ma Qingping,Wang Linjun,Ding Zhaotang
Abstract
AbstractAbscisic acid (ABA) is an important phytohormone responsible for activating drought resistance, but the regulation mechanism of exogenous ABA on tea plants under drought stress was rarely reported. Here, we analyzed the effects of exogenous ABA on genes and metabolites of tea leaves under drought stress using transcriptomic and metabolomic analysis. The results showed that the exogenous ABA significantly induced the metabolic pathways of tea leaves under drought stress, including energy metabolism, amino acid metabolism, lipid metabolism and flavonoids biosynthesis. In which, the exogenous ABA could clearly affect the expression of genes involved in lipid metabolism and flavonoid biosynthesis. Meanwhile, it also increased the contents of flavone, anthocyanins, flavonol, isoflavone of tea leaves under drought stress, including, kaempferitrin, sakuranetin, kaempferol, and decreased the contents of glycerophospholipids, glycerolipids and fatty acids of tea leaves under drought stress. The results suggested that the exogenous ABA could alleviate the damages of tea leaves under drought stress through inducing the expression of the genes and altering the contents of metabolites in response to drought stress. This study will be helpful to understand the mechanism of resilience to abiotic stress in tea plant and provide novel insights into enhancing drought tolerance in the future.
Funder
the National Natural Science Foundation of China
Breeding Project of Shandong Province
Technology System of Modern Agricultural Industry in Shandong Province
the Special Foundation for Distinguished Taishan Scholar of Shandong Province
Publisher
Springer Science and Business Media LLC
Reference56 articles.
1. Zheng, C., Wang, Y., Ding, Z. & Zhao, L. Global transcriptional analysis reveals the complex relationship between tea quality, leaf senescence and the responses to cold-drought combined stress in Camellia sinensis. Front. Plant Sci. 7, 1858 (2016).
2. Liu, S. C. et al. Transcriptomic analysis of tea plant responding to drought stress and recovery. PLoS ONE 11, e0147306 (2016).
3. Wang, W. et al. Transcriptomic analysis reveals the molecular mechanisms of drought-stress-induced decreases in Camellia sinensis leaf quality. Front. Plant. Sci. 7, 385 (2016).
4. Upadhyaya, H. & Panda, S. K. Responses of Camellia sinensis to drought and rehydration. Biol. Plant. 48, 597–600 (2004).
5. Du, Y. et al. Exogenous abscisic acid reduces water loss and improves antioxidant defence, desiccation tolerance and transpiration efficiency in two spring wheat cultivars subjected to a soil water deficit. Funct. Plant Biol. 40, 494–506 (2013).
Cited by
90 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献