Plant Hormones as Mediators of Stress Response in Tea Plants
The roles of hormones in plant growth, development and responses to stress have extensively been studied in model plants as well as some crop species. Some important genes, molecular players, and transcription factors (TFs) have been shown to play a vital role in mediating multiple hormone-regulated processes and stress responses. Recent transcriptomic analysis in tea plants identified some interesting candidates that are potentially involved in the hormonal control based on the knowledge of model plants. Identification of these genes suggests that modulation of hormone biosynthesis and signaling pathways can be effective toward manipulation of tea composition (quality) and stress tolerance; however, the issue has never been thoroughly reviewed. In this chapter, we aim to discuss those putative genes and TFs and link them with the response of tea plants to different environmental stimuli. In addition, the underlying physiological and molecular mechanisms of hormone-mediated responses to environmental stress are discussed.
KeywordsAbiotic stress Crosstalk Plant hormone Tea plant (Camellia sinensis) Transcription factor (TF)
Research in the authors’ laboratories is supported by grants from the Key Project of International Science & Technology Cooperation, National Key Research and Development Programme of China (2017YFE0107500), the Open Fund of State Key Laboratory of Tea Plant Biology and Utilization (SKLTOF20170106), the Innovation Project of the Chinese Academy of Agricultural Sciences (CAAS-ASTIP-2015-TRICAAS-08), Henan University of Science and Technology (HAUST) Research Start-up Fund for New Faculty (13480058), the National Natural Science Foundation of China (31600561), and the Central Public-interest Scientific Institution Basal Research Fund (1610212016013, 1610212018015).
- Ahammed GJ, Li X, Zhou J, Zhou YH, Yu JQ (2016) Role of hormones in plant adaptation to heat stress. In: Plant hormones under challenging environmental factors. Springer, Dordrecht, pp 1–21Google Scholar
- Ahmed S, Stepp JR, Orians C, Griffin T, Matyas C, Robbat A, Cash S, Xue D, Long C, Unachukwu U, Buckley S, Small D, Kennelly E (2014) Effects of extreme climate events on tea (Camellia sinensis) functional quality validate indigenous farmer knowledge and sensory preferences in tropical China. PLoS One 9(10):e109126CrossRefGoogle Scholar
- Bali S, Poonam, Gautam V, Kaur P, Khanna K, Kaur R, Vig AP, Ohri P, Bhardwaj R (2017) Interaction of salicylic acid with plant hormones in plants under abiotic stress. In: Nazar R et al (eds) Salicylic acid: a multifaceted hormone. Springer, Singapore. https://doi.org/10.1007/978-981-10-6068-7_10 CrossRefGoogle Scholar
- Bidarigh S, Hatamzadeh A, Azarpour E (2012) The study effect of IBA hormone levels on rooting in micro cuttings of tea (Camellia sinensis L.). World Appl Sci J 20:1051–1054Google Scholar
- Ghanati F, Ishkaa MR (2009) Investigation of the interaction between abscisic acid (ABA) and excess benzyladenine (BA) on the formation of shoot in tissue culture of tea (Camellia sinensis L.). Int J Plant Prod 3(4):7–14Google Scholar
- Han WY, Huang JG, Li X, Li ZX, Ahammed GJ, Yan P, Stepp JR (2016) Altitudinal effects on the quality of green tea in East China: a climate change perspective. Eur Food Res Technol 243(2):1–8Google Scholar
- Han W, Li X, Yan P, Zhang L, Ahammed GJ (2018) Tea cultivation under changing climatic conditions. In: Global tea science current status and future needs. Burleigh Dodds Science Publishing, Cambridge, pp 455–472Google Scholar
- Jammes F, Song C, Shin D, Munemasa S, Takeda K, Gu D, Cho D, Lee S, Giordo R, Sritubtim S, Leonhardt N, Ellis BE, Murata Y, Kwak JM (2009) MAP kinases MPK9 and MPK12 are preferentially expressed in guard cells and positively regulate ROS-mediated ABA signaling. Proc Natl Acad Sci U S A 106(48):20520–20525CrossRefGoogle Scholar
- Ju C, Yoon GM, Shemansky JM, Lin DY, Ying ZI, Chang J, Garrett WM, Kessenbrock M, Groth G, Tucker ML, Cooper B, Kieber JJ, Chang C (2012) CTR1 phosphorylates the central regulator EIN2 to control ethylene hormone signaling from the ER membrane to the nucleus in Arabidopsis. Proc Natl Acad Sci U S A 109:19486–19491CrossRefGoogle Scholar
- Rasool S, Urwat U, Nazir M, Zargar SM, Zargar MY (2018) Cross talk between phytohormone signaling pathways under abiotic stress conditions and their metabolic engineering for conferring abiotic stress tolerance. In: Zargar SM, Zargar MY (eds) Abiotic stress-mediated sensing and signaling. in plants: an Omics perspective. Springer, Singapore. https://doi.org/10.1007/978-981-10-7479-0_12 CrossRefGoogle Scholar