Demmig-Adams, B/ Adams, WW", III/ Green, TGA/ Czygan, FC/ Lange, OL 1990: Differences in the susceptibility to light stress in two lichens forming a phycosymbiodeme, one partner possessing and one lacking the xanthophyll cycle. - Oecologia84: 451-456. [RLL List # 142 / Rec.# 4218] Keywords: PHYCOSYMBIODEME/ LIGHT STRESS/ XANTHOPHYLLS/ CAROTENOIDS/ PSEUDOCYPHELLARIA
Abstract: 1 table. 4 figures. [Study on Pseudocyphellaria rufovirescens-P. murrayi phycosymbiodeme. "These findings represent further evidence that zeaxanthin is involved in the photoprotective dissipation of excessive excitation energy in photosynthetic membranes. The difference in the capacity for rapid zeaxanthin formation between the two partners of the Pseudocyphellaria phycosymbiodeme may be important in the habitat selection of the two species when living separate from one another."]