Pigment composition, glutathione and tocopherols in green algal and cyanobacterial lichens and their response to different light treatments

Investor logo

Warning

This publication doesn't include Faculty of Arts. It includes Faculty of Science. Official publication website can be found on muni.cz.
Authors

CEMPÍRKOVÁ Hana VEČEŘOVÁ Kristýna

Year of publication 2018
Type Article in Periodical
Magazine / Source Czech polar reports
MU Faculty or unit

Faculty of Science

Citation
Doi http://dx.doi.org/10.5817/CPR2018-2-17
Keywords Antioxidants;Excess light stress;Photoprotection;Zeaxanthin
Description This study investigated photosynthetic pigments chlorophyll a and b, carotenoids (including xanthophyll cycle pigments) and antioxidants glutathione and tocopherols contents in chloro- (Lobaria pulmonaria, Lasallia pustulata) and cyanolichens (Lobaria scrobiculata, Peltigera canina) from different habitats and of different geographical origin. Lichen thalli were treated with various levels of irradiance (from 100 to 1500 umol m-2 s-1 ) for various time periods (from 20 min. to 5 h). The extent of increase of zeaxanthin content after different light treatments differed among chlorolichens, clearly distinguishing the species from light and shade habitats. Irrespective of light treatment, b-carotene content was always higher in cyanobacterial species than in green algal species. Highest canthaxanthin concentration, as well as b-carotene concentration, was found in L. scrobiculata from shade habitat. The content of total glutathione was the same in the same species from different collection sites. On the contrary, contents of a-tocopherol differed in the same species from different collection sites.
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.