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IJEB Vol.44(04) [April 2006] >


Title:  Effect of UV-B on photosynthesis, membrane lipids and MAAs in marine cyanobacterium, Phormidium corium (Agardh) Gomont
Authors: Bhandari, Rupali
Sharma, Prabhat Kumar
Keywords: Chlorophyll fluorescence
Cyanobacteria
Lipid peroxidation
Mycosporine like amino acids
Phosphoglycolipids
Sugars
UV-B radiation
Issue Date: Apr-2006
Publisher: CSIR
Abstract:  UV-B radiation (0.8±0.1 mW cm-2) and UV-B radiation supplemented with low intensity PAR (~80 m mol m-2 s-1) affected photosynthesis at the level of antenna system as well as PS II reaction centre (Fo and Fm declined) in Phormidium corium (Agardh) Gomont. UV-B radiation resulted in decline in sugar content, peroxidation of membrane lipids as well as quantitative and qualitative changes in phosphoglycolipids and neutral lipids. Fatty acid profile did not show any qualitative changes due to the treatment, however, UV-B supplemented with low PAR resulted in slightly higher level of unsaturation. P. corium synthesized MAAs in response to UV-B. Quantity of MAAs increased when UV-B treatment was supplemented with low level PAR.
Page(s): 330-335
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Source:IJEB Vol.44(04) [April 2006]

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