期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 16, 页码 4882-4907出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201508928
关键词
biodegradation; chlorophyll; metabolism; natural product; plants
资金
- Austrian Science Fund (FWF project) [P 19596, L-472, I-563]
- Interreg IV Italy-Austria program (ERDF
- project Biophytirol) [5345]
- Austrian Science Fund (FWF) [I 563] Funding Source: researchfish
Fall colors have always been fascinating and are still a remarkably puzzling phenomenon associated with the breakdown of chlorophyll (Chl) in leaves. As discovered in recent years, nongreen bilin-type Chl catabolites are generated, which are known as the phyllobilins. Collaborative chemical-biological efforts have led to the elucidation of the key Chl-breakdown processes in senescent leaves and in ripening fruit. Colorless and largely photoinactive phyllobilins are rapidly produced from Chl, apparently primarily as part of a detoxification program. However, fluorescent Chl catabolites accumulate in some senescent leaves and in peels of ripe bananas and induce a striking blue glow. The structural features, chemical properties, and abundance of the phyllobilins in the biosphere suggest biological roles, which still remain to be elucidated.
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