DAMAGE AND RECOVERY FROM ENHANCED UV-B EXPOSURE IN BRYUM ARGENTEUM AND DIDYMODON VINEALIS FROM BIOLOGICAL SOIL CRUSTS
Rong Hui, Xinrong Li, Ruiming Zhao, Lichao Liu, Gang Li, Yongping Wei
Fresenius Environmental Bulletin | PARLAR SCIENTIFIC PUBLICATIONS (P S P) | Published : 2015
We evaluated the influence of exposure to ultraviolet-B (UV-B) radiation (2.75,3.08, 3.25 and 3.41 W m-2), and recovery on returning to visible light conditions (150 umol m-2 s-1) on the physiological properties related to photosynthesis in the mosses Bryum argenteum Hedw. and Didy-modon vinealis (Brid.) Zand. Specimens of B. argenteum and D. vinealis were isolated from biological soil crusts (BSCs) from the Tengger Desert, northern China. The results showed that UV-B radiation decreased the Chi fluorescence parameters, photosynthetic pigments, soluble protein and malondialdehyde (MDA) contents of B. argenteum and vinealis, and that the degree of negative effects was in proportion to the int..View full abstract
Awarded by National Basic Research Program of China
Awarded by National Natural Science Foundation of China
Research was supported by grants from the one of National Basic Research Program of China (2013CB429906), the National Natural Science Foundation of China (41271061, 41371100), and West Light Program for Talent Cultivation of Chinese Academy of Sciences.