首页 | 本学科首页   官方微博 | 高级检索  
     


Risposte Fotomorfogeniche Indotte Dalla Radiazione UV-B in Brassica Oleracea var. Capitata
Authors:A. Giannini  B. Lercari
Affiliation:1. Scuola Superiore di Studi Universitari e Perfezionamento Sant'Anna , Via Carducci 40, 56100, Pisa;2. Dipartimento di Biologia delle piante agrarie , Università degli Studi di Pisa , Viale delle Piagge 23, 56124, Pisa
Abstract:Abstract

Photomorphogenic responses induced by UV-B radiation in Brassica oleracea var. capitata.—Ultraviolet radiation can induce a plethora of “damaging” and “non damaging” effects in higher plants. We analyzed two possible photomorphogenic responses to UV-B radiation, the anthocyanin accumulation and the inhibition of hypocotyl elongation by modifying the UV spectral range with specific cut-off filters, under two levels of photon fluence rate. Experimental results suggest that detrimental effects are due to shorter wavelenghts of UV-B region (less than 305 nm); in contrast some adaptative responses may be induced by longer wavelenghts of UV-B region (between 305 and 320 nm). We attempted to determine the involvment of endogenous anthocyanin content in the UV-B photoprotection. Our experiments suggest a secondary role of anthocyanin accumulation in UV-B plant adaptation.
Keywords:Anthocyanins  Brassica oleracea  UV-B photoreceptor
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号