Effect of UV radiation on pigments of the Antarctic macroalga Leptosomia simplex L.

Impact of UV-A and UV-B radiation on pattern of pigments of the Antarctic macroalga Leptosomia simplex L. was studied during the Polarstern cruise (ANT XII/2) 1994/95 under controlled laboratory conditions. An 8 h exposure to UV-A of 17.6 W m-2 led usually to an increase of carotenoid contents, but...

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Bibliographic Details
Main Author: Döhler, G.
Language:English
Subjects:
α- and β-carotenes
chlorophyll
chlorophyllide
lutein
UV-A and UV-B radiation
zeaxanthin
Antarctic
The Antarctic
Antarc*
Online Access:https://kramerius.lib.cas.cz/view/uuid:b3a7e6c5-7b71-453a-8e84-c8125f930d2a
https://doi.org/10.1023/A:1006932922895
Description
Summary:Impact of UV-A and UV-B radiation on pattern of pigments of the Antarctic macroalga Leptosomia simplex L. was studied during the Polarstern cruise (ANT XII/2) 1994/95 under controlled laboratory conditions. An 8 h exposure to UV-A of 17.6 W m-2 led usually to an increase of carotenoid contents, but to a decrease in contents of chlorophyllide (Chlide) a and chlorophyll (Chl) a. UV-B irradiation (300-320 nm) caused a decrease in contents of Chlide a, lutein, and zeaxanthin, but an increase in contents of Chl a and carotenes. Enhancement of carotenoid contents was attributed to a protection of the photosynthetic apparatus. UV effects on the 15N-ammonium uptake were correlated with the changes in pigment contents.

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