Caffeine Biosynthesis and Degradation in Tea [Camellia sinensis (L.) O. Kuntze] is under Developmental and Seasonal Regulation |
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| Authors: | Prashant Mohanpuria Vinay Kumar Robin Joshi Ashu Gulati Paramvir Singh Ahuja Sudesh Kumar Yadav |
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| Affiliation: | (1) Biotechnology Division, Institute of Himalayan Bioresource Technology, CSIR, Palampur, HP, 176061, India;(2) Hill Area Tea Science, Institute of Himalayan Bioresource Technology, CSIR, Palampur, HP, 176061, India;(3) Present address: Department of Botany and Plant Sciences, Institute for Integrative Genome Biology, University of California Riverside, Riverside, CA 92507, USA; |
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| Abstract: | To study caffeine biosynthesis and degradation, here we monitored caffeine synthase gene expression and caffeine and allantoin content in various tissues of four Camellia sinensis (L.) O. Kuntze cultivars during non-dormant (ND) and dormant (D) growth phases. Caffeine synthase expression as well as caffeine content was found to be higher in commercially utilized tissues like apical bud, 1st leaf, 2nd leaf, young stem, and was lower in old leaf during ND compared to D growth phase. Among fruit parts, fruit coats have higher caffeine synthase expression, caffeine content, and allantoin content. On contrary, allantoin content was found lower in the commercially utilized tissues and higher in old leaf. Results suggested that caffeine synthesis and degradation in tea appears to be under developmental and seasonal regulation. |
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