THE EFFECTS OF UV-B RADIATION ON DINOFLAGELLATES

被引:28
作者
EKELUND, NGA
机构
[1] Dept. of Plant Physiology, Lund, S-220 07
关键词
GROWTH; GYRODINIUM-AUREOLUM; HETEROCAPSA-TRIQUETRA; MOTILITY; PHYTOPLANKTON; PROROCENTRUM MINIMUM; SCRIPPSIELLA-TROCHOIDEA; UV-B RADIATION;
D O I
10.1016/S0176-1617(11)80287-7
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Ultraviolet radiation, UV-B (280-320 nm), has harmful effects on marine phytoplankton. The present experiments were done to determine the effects of UV-B radiation on motility and growth of four marine motile dinoflagellates, Gyrodinium aureolum, Prorocentrum minimum, Heterocapsa triquetra and Scrippsiella trochoidea. The specific growth rate of the dinoflagellates showed an inhibition after 1 hour UV-B (1.5 kJ m-2 day-1) daily during 1 week. The motility of H. triquetra showed a pronounced inhibition after 12 kJ m-2 day-1, the motility of S. trochoidea did not show the same sensitivity to UV-B radiation. The photosynthetic inhibitor DCMU (10(-5) M) inhibited the motility of S. trochoidea but not the motility of H. triquetra. Action spectra (UV-B, 280-320 nm) for inhibition of motility of G. aureolum showed the maximum sensitivity at 280 and 290 nm.
引用
收藏
页码:274 / 278
页数:5
相关论文
共 16 条