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Front Plant Sci

Title:		The Tea Plant Leaf Cuticle: From Plant Protection to Tea Quality
Author(s):		Chen M;
Address:		"College of Life Sciences, Henan Provincial Key Laboratory of Tea Plant Biology, Xinyang Normal University, Xinyang, China"
Journal Title:		Front Plant Sci
Year:		2021
Volume:		20211001
Issue:
Page Number:		751547 -
DOI:		10.3389/fpls.2021.751547
ISSN/ISBN:		1664-462X (Print) 1664-462X (Electronic) 1664-462X (Linking)
Abstract:		"Camellia sinensis (tea tree) is a perennial evergreen woody crop that has been planted in more than 50 countries worldwide; its leaves are harvested to make tea, which is one of the most popular nonalcoholic beverages. The cuticle is the major transpiration barrier to restrict nonstomatal water loss and it affects the drought tolerance of tea plants. The cuticle may also provide molecular cues for the interaction with herbivores and pathogens. The tea-making process almost always includes a postharvest withering treatment to reduce leaf water content, and many studies have demonstrated that withering treatment-induced metabolite transformation is essential to shape the quality of the tea made. Tea leaf cuticle is expected to affect its withering properties and the dynamics of postharvest metabolome remodeling. In addition, it has long been speculated that the cuticle may contribute to the aroma quality of tea. However, concrete experimental evidence is lacking to prove or refute this hypothesis. Even though its relevance to the abiotic and biotic stress tolerance and postharvest processing properties of tea tree, tea cuticle has long been neglected. Recently, there are several studies on the tea cuticle regarding its structure, wax composition, transpiration barrier organization, environmental stresses-induced wax modification, and structure-function relations. This review is devoted to tea cuticle, the recent research progresses were summarized and unresolved questions and future research directions were also discussed"
Keywords:		Camellia sinensis correlation analysis cuticle structure-function relation transpiration barrier transpiration rate wax;
Notes:		"PubMed-not-MEDLINEChen, Mingjie eng Review Switzerland 2021/10/19 Front Plant Sci. 2021 Oct 1; 12:751547. doi: 10.3389/fpls.2021.751547. eCollection 2021"