植物の生長調節
Online ISSN : 2189-6305
Print ISSN : 1346-5406
研究ノート
植物の「香り」の配糖化メカニズム
大西 利幸
著者情報
ジャーナル フリー

2017 年 52 巻 2 号 p. 99-105

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Plants have the ability to synthesize and emit a diversity of volatile organic compounds (VOCs) that may act as aroma and flavor molecules in response to insect herbivores, mechanical wounding, and attraction of pollinators. Plants also have the capacity to accumulate the VOCs into plant itself. Several plant species morphologically develop specialized glandular trichomes to store VOCs which are released in response to tissue damage for chemical defense such as inhibiting microbial growth or deterring herbivores. Glycosylation is another machinery for safely storing VOCs into normal cells. Tea plant (Camellia sinensis) stores VOCs with glycosylation in tea leaves, mainly conjugated to β-primeverosides, the most abundant form of aroma diglycosides in C. sinensis. Here, we introduced two UDP-glycosyltransferases (UGTs) from C. sinensis, UGT85K11 (CsGT1) and UGT94P1 (CsGT2), converting VOCs into β-primeverosides by sequential glucosylation and xylosylation, respectively. This information can be used to preserve tea aroma better during the manufacturing process and to investigate the mechanism of plant chemical defenses.

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© 2017 一般社団法人植物化学調節学会
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