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Title: Regulation of aerobic hydrogen metabolism in diazotrophic cyanobacteria
Researcher: Pratap Kumar, A
Guide(s): Singh, H N
Keywords: Anabaena cycadeae
Cycas circinalis
Upload Date: 11-Mar-2011
University: University of Hyderabad
Completed Date: 1988
Abstract: A comparative study of photosynthesis, nitrogen anti hydrogen metabolism carried out on the cyanobiont of Cycas circinalis coralloid roots and the cultured isolate, Anabaena cycadeae. The cyanobiont showed lower rates of photosynthesis, had a higher heterocyst frequency and nitrogenase activity, and lacked uptake hydrogenasc. Increase in light intensity caused stimulation of photosynthesis and nitrogenase activity of the cultured Anabaena cycadrae but the response in the cyanobiont was far less pronounced. Activities of glutamine synthctase (both biosynthetic and transferase), aspartate dehydrogenase, alanine dehydrogenase and glutamate pyruvatc transaminase, in the cyanobiont, were 30-60% lower than those in its freeliving form Anabaena cycadeae. Glutamate oxaloacetate transaminase, on the other hand, was significantly higher in the cyanobiont. Glutamate dehydrogenase and nitrate reductase were undetectable.
Pagination: 128p.
Appears in Departments:School of life Sciences

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04_content.pdf16.79 kBAdobe PDFView/Open
05_abbreviation.pdf35.94 kBAdobe PDFView/Open
06_chapter1.pdf177.32 kBAdobe PDFView/Open
07_chapter2.pdf287.86 kBAdobe PDFView/Open
08_chapter3.pdf876.75 kBAdobe PDFView/Open
09_chapter4.pdf283.91 kBAdobe PDFView/Open
10_chapter5.pdf829.96 kBAdobe PDFView/Open
11_chapter6.pdf51.73 kBAdobe PDFView/Open
12_bibliography.pdf148.54 kBAdobe PDFView/Open
13_summary.pdf1.01 MBAdobe PDFView/Open

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