GROWTH AND SOME METABOLIC FEATURES OF CYANOBACTERIUM FISCHERELLA SP. FS18 IN DIFFERENT COMBINED

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SOLTANI NEDA; KHAVARINEZHAD RAMEZAN ALI; TABATABAEI YAZDI S.M.; SHOKRAVI SH.

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Journal: Journal of Sciences, Islamic Republic of Iran Year:2007 | Volume:18 | Issue:2 Page(s): 123-128

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Title

GROWTH AND SOME METABOLIC FEATURES OF CYANOBACTERIUM FISCHERELLA SP. FS18 IN DIFFERENT COMBINED

Author(s)

SOLTANI NEDA | KHAVARINEZHAD RAMEZAN ALI | TABATABAEI YAZDI S.M. | SHOKRAVI SH. | Issue Writer Certificate

Keywords

AMMONIUMQ3

CYANOBACTERIAQ3

FISCHERELLA SP.Q4

NITRATEQ3

NITROGENASEQ3

PHOTOSYNTHESISQ3

PHOTOSYNTHETIC PIGMENTSQ3

Abstract

In the present research the growth and metabolism of cyanobacterium FISCHERELLA SP. FS18, isolated from rice fields of Gillan Province (Iran), were evaluated in different nitrogen sources. This strain is a good candidate as biological fertilizer due to high efficiency to N2 fixation. In this way, cells in logarithmic phase of stock were treated with different nitrogen sources (N-free, 1 & 2 mM NH4+ and 5 and 10mM NO3-). Results indicated that maximum growth rate belonged to NO3- treatment. Dry weights of FISCHERELLA SP. FS18 in N-free medium and AMMONIUM were in decreasing order of preference; and NH4+ 2mM was drastically toxic for this strain. The highest chlorophyll concentration was detected in N-free medium. NO3- 5mM and NH4+ 2mM had the lower contents of this pigment. PHOTOSYNTHESIS rate varied the same as chlorophyll. phycocyanin and phycoerythrin had the highest rate in NITRATE. The highest light-saturated photosynthetic rate and also steepest initial slope clearly belonged to nitrogen free-medium. All types of combined nitrogen sources had inhibitory effect on NITROGENASE activity, regardless of the concentrations used. Our results indicated that FISCHERELLA SP. FS18 is a potent diazotrophic species with increasing growth in the presence of NITRATE; and AMMONIUM 2mM seems to be toxic for it.

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APA: Copy

SOLTANI, NEDA, KHAVARINEZHAD, RAMEZAN ALI, TABATABAEI YAZDI, S.M., & SHOKRAVI, SH.. (2007). GROWTH AND SOME METABOLIC FEATURES OF CYANOBACTERIUM FISCHERELLA SP. FS18 IN DIFFERENT COMBINED. JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN, 18(2), 123-128. SID. https://sid.ir/paper/84089/en

Vancouver: Copy

SOLTANI NEDA, KHAVARINEZHAD RAMEZAN ALI, TABATABAEI YAZDI S.M., SHOKRAVI SH.. GROWTH AND SOME METABOLIC FEATURES OF CYANOBACTERIUM FISCHERELLA SP. FS18 IN DIFFERENT COMBINED. JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN[Internet]. 2007;18(2):123-128. Available from: https://sid.ir/paper/84089/en

IEEE: Copy

NEDA SOLTANI, RAMEZAN ALI KHAVARINEZHAD, S.M. TABATABAEI YAZDI, and SH. SHOKRAVI, “GROWTH AND SOME METABOLIC FEATURES OF CYANOBACTERIUM FISCHERELLA SP. FS18 IN DIFFERENT COMBINED,” JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN, vol. 18, no. 2, pp. 123–128, 2007, [Online]. Available: https://sid.ir/paper/84089/en

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