Effect of mineral phosphates on growth and nitrogen fixation of diazotrophic cyanobacteria Anabaena variabilis and Westiellopsis prolifica

The nitrogen fixing cyanobacterial strains namely Anabaena variabilis (Nostocales, Nostocaceae) and Westiellopsis prolifica (Nostocales, Hapalosiphonaceae) were evaluated for their nitrogen fixation and growth potential in response to different concentrations (10, 20 and 30 mg P) of the alternate in...

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Bibliographic Details
Published in:Antonie van Leeuwenhoek 2010-03, Vol.97 (3), p.297-306
Main Authors: Yandigeri, Mahesh S, Yadav, Arvind K, Meena, Kamlesh Kumar, Pabbi, Sunil
Format: Article
Language:English
Subjects:
Acetylene - metabolism
Acetylene reduction
Action of physical and chemical agents on bacteria
Anabaena variabilis
Anabaena variabilis - chemistry
Anabaena variabilis - growth & development
Anabaena variabilis - metabolism
Bacteria
Bacterial Proteins - analysis
Bacteriology
Biological and medical sciences
Biomass
Biomedical and Life Sciences
Calcium phosphates
Carbohydrates - analysis
Chlorophyll - analysis
Comparative studies
Cyanobacteria
Cyanobacteria - chemistry
Cyanobacteria - growth & development
Cyanobacteria - metabolism
Fundamental and applied biological sciences. Psychology
Life Sciences
Medical Microbiology
Microbiology
Nitrogen
Nitrogen Fixation
Nostocaceae
Nostocales
Original Paper
Phosphates
Phosphates - metabolism
Plant Sciences
Rocks
Soil Science & Conservation
Westiellopsis prolifica
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Summary:The nitrogen fixing cyanobacterial strains namely Anabaena variabilis (Nostocales, Nostocaceae) and Westiellopsis prolifica (Nostocales, Hapalosiphonaceae) were evaluated for their nitrogen fixation and growth potential in response to different concentrations (10, 20 and 30 mg P) of the alternate insoluble P-sources Mussorie Rock Phosphate and Tricalcium Phosphate. Distinct and significant intergeneric differences were observed with respect to nitrogen fixation measured as Acetylene Reduction Activity (ARA) and growth potential as soluble proteins, total carbohydrate content, dry weight and total chlorophyll content in response to different concentrations of Mussorie Rock Phosphate and Tricalcium Phosphate. Both the strains showed higher soluble protein content at 20 mg P (Mussorie Rock Phosphate) that increased with time of incubation in A. variabilis. Both cyanobacteria recorded maximum Acetylene Reduction Activity at 20 mg P (Tricalcium Phosphate) followed by activity in presence of soluble phosphate (K₂HPO₄). The mean activity at all concentrations of insoluble phosphate (Mussorie Rock Phosphate and Tricalcium Phosphate) was more than in the presence of soluble phosphate.
ISSN:0003-6072
1572-9699
DOI:10.1007/s10482-009-9411-y