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Prashant Mohanpuria Vinay Kumar Robin Joshi Ashu Gulati Paramvir Singh Ahuja Sudesh Kumar Yadav 《Molecular biotechnology》2009,43(2):104-111
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. 相似文献