Iron induced metabolic changes in the diazotrophic cyanobacterium Anabaena PCC 7120.
Iron induced changes in growth, N2-fixation, CO2 fixation and photosynthetic activity were studied in a diazotrophic cyanobacterium Anabaena PCC 7120. Iron at 50 microM concentration supported the maximum growth, heterocyst frequency, CO2 fixation, photosystem I (PS I), photosystem II (PS II) and nitrogenase activities in the organism. Higher concentration of iron inhibited these processes. Chl a and PS II activities were more sensitive to iron than the protein and PS I activity.
Saxena
Rishi Kumar
RK
Department of Microbiology, J.C.Bose Institute of Life Science, Bundelkhand University, Jhansi 284 128, India.
Raghuvanshi
Ruchika
R
Singh
Surendra
S
Bisen
Prakash Singh
PS
D017033:Anabaena / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism*; D002245:Carbon Dioxide / Q000378:metabolism; D002734:Chlorophyll / Q000378:metabolism; D000077194:Chlorophyll A; D007501:Iron / Q000494:pharmacology*; D009586:Nitrogen Fixation / Q000187:drug effects; D010788:Photosynthesis / Q000187:drug effects
D002734:Chlorophyll; D002245:Carbon Dioxide; D007501:Iron; D000077194:Chlorophyll A