Risposte Fotomorfogeniche Indotte Dalla Radiazione UV-B in Brassica Oleracea var. Capitata
作者:
A. Giannini,
B. Lercari,
期刊:
Giornale botanico italiano
(Taylor Available online 1995)
卷期:
Volume 129,
issue 3
页码: 781-789
ISSN:0017-0070
年代: 1995
DOI:10.1080/11263509509436168
出版商: Taylor & Francis Group
关键词: Anthocyanins;Brassica oleracea;UV-B photoreceptor
数据来源: Taylor
摘要:
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.
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