NDLI: UV-A protection in mosses growing in continental Antarctica

Content Provider	Springer Nature Link
Author	Green, T. G. Allan Kulle, Daniel Pannewitz, Stefan Sancho, Leo G. Schroeter, Burkhard
Copyright Year	2005
Abstract	The simple structure of mosses, a major component of Antarctic terrestrial vegetation, has led to suggestions that they might be exceptionally sensitive to enhanced UV from the ozone hole. The results presented here show that the mosses Ceratodon purpureus and Bryum subrotundifolium are resistant to UV-A and that the latter species can rapidly change its protection to suit the UV environment. The studies were made using a UV-A PAM chlorophyll fluorescence fluorometer that allowed absorption of UV-A before arrival at the chloroplast (i.e. UV-A shielding) to be estimated. Both C. purpureus and B. subrotundifolium have sun and shade forms that differ markedly in colour and their protection from UV-A. Shade forms of B. subrotundifolium, initially low in UV-A protection, achieve full, sun-form levels in about 6 days when exposed to ambient sunlight. These results, taken with other recent studies, suggest that not only are Antarctic mosses well protected from ambient UV, but are also as adaptable to incident UV as higher plants.
Starting Page	822
Ending Page	827
Page Count	6
File Format	PDF
ISSN	07224060
Journal	Polar Biology
Volume Number	28
Issue Number	11
e-ISSN	14322056
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-06-29
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Zoology Plant Sciences Microbiology Oceanography Ecology
Content Type	Text
Resource Type	Article
Subject	Agricultural and Biological Sciences

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