UV-B PROTECTIVE POTENTIAL AND FLAVONOID CONTENT OF LEAF HAIRS OF QUERCUS-ILEX

被引：111
作者：
SKALTSA, H
VERYKOKIDOU, E
HARVALA, C
KARABOURNIOTIS, G
MANETAS, Y
机构：
[1] UNIV ATHENS, DEPT PHARM, DIV PHARMACOGNOSY, GR-15771 ATHENS, GREECE
[2] AGR UNIV ATHENS, DEPT AGR BIOL & BIOTECHNOL, PLANT PHYSIOL LAB, GR-11855 BOTANIKOS, GREECE
[3] UNIV PATRAS, DEPT BIOL, PLANT PHYSIOL LAB, Patras, GREECE
来源：
PHYTOCHEMISTRY | 1994年 / 37卷 / 04期
关键词：
QUERCUS ILEX; FAGACEAE; HOLLY OAK; LEAF HAIRS; UV-B DAMAGE; FLAVONOIDS;
D O I：
10.1016/S0031-9422(00)89514-X
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Flavonoids of non-glandular leaf hairs from Quercus ilex were analysed. The main compounds were acylated kaempferol glycosides. Acylation shifted the absorption peak into the ultraviolet-B region of the spectrum in which intact trichome layers absorbed strongly. Ultraviolet-B radiation caused a considerable reduction of photosystem II photochemical efficiency only in dehaired leaves. It is suggested that leaf hairs, besides other roles, may function as an effective filter against the harmful ultraviolet-B radiation.
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页码：987 / 990
页数：4
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