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J Agric Food Chem

Title:		Biosynthesis of Jasmine Lactone in Tea ( Camellia sinensis) Leaves and Its Formation in Response to Multiple Stresses
Author(s):		Zeng L; Zhou Y; Fu X; Liao Y; Yuan Y; Jia Y; Dong F; Yang Z;
Address:		"Guangdong Provincial Key Laboratory of Applied Botany & Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden , Chinese Academy of Sciences , Xingke Road 723 , Tianhe District, Guangzhou 510650 , China. University of Chinese Academy of Sciences, No. 19A Yuquan Road , Beijing 100049 , China. Guangdong Food and Drug Vocational College, Longdongbei Road 321 , Tianhe District, Guangzhou 510520 , China"
Journal Title:		J Agric Food Chem
Year:		2018
Volume:		20180406
Issue:		15
Page Number:		3899 - 3909
DOI:		10.1021/acs.jafc.8b00515
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"Jasmine lactone has a potent odor that contributes to the fruity, sweet floral aroma of tea ( Camellia sinensis). Our previous study demonstrated that jasmine lactone was mostly accumulated at the turnover stage of the oolong tea manufacturing process. This study investigates the previously unknown mechanism of formation of jasmine lactone in tea leaves exposed to multiple stresses occurring during the growth and manufacturing processes. Both continuous mechanical damage and the dual stress of low temperature and mechanical damage enhanced jasmine lactone accumulation in tea leaves. In addition, only one pathway, via hydroperoxy fatty acids from unsaturated fatty acid, including linoleic acid and alpha-linolenic acid, under the action of lipoxygenases (LOXs), especially CsLOX1, was significantly affected by these stresses. This is the first evidence of the mechanism of jasmine lactone formation in tea leaves and is a characteristic example of plant volatile formation in response to dual stress"
Keywords:		"Camellia sinensis/chemistry/genetics/growth & development/*physiology Food Handling Lactones/chemistry/*metabolism Plant Leaves/chemistry/genetics/growth & development/metabolism Plant Proteins/genetics/metabolism Stress, Physiological Camellia sinensis a;"
Notes:		"MedlineZeng, Lanting Zhou, Ying Fu, Xiumin Liao, Yinyin Yuan, Yunfei Jia, Yongxia Dong, Fang Yang, Ziyin eng 2018/04/03 J Agric Food Chem. 2018 Apr 18; 66(15):3899-3909. doi: 10.1021/acs.jafc.8b00515. Epub 2018 Apr 6"