THE EFFECTS OF NAPHTHALENE ON PHYCOBILIPROTEINS, CARBON AND NITROGEN ASSIMILATION IN CYANOBACTERIUM LEPTOLYNGBYA SP. ISC 25

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ABBAS PANAH BAHAREH; NAJAFI FARZANEH; SOLTANI NEDA; KHAVARINEZHAD RAMEZAN ALI

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Journal: Environmental Sciences Year:2012 | Volume:9 | Issue:SPECIAL ISSUE Page(s): 39-48

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Title

THE EFFECTS OF NAPHTHALENE ON PHYCOBILIPROTEINS, CARBON AND NITROGEN ASSIMILATION IN CYANOBACTERIUM LEPTOLYNGBYA SP. ISC 25

Author(s)

ABBAS PANAH BAHAREH | NAJAFI FARZANEH | SOLTANI NEDA | KHAVARINEZHAD RAMEZAN ALI | Issue Writer Certificate

Keywords

AMMONIUM EXCRETIONQ2

CHLαQ2

CYANOBACTERIUMQ2

LEPTOLYNGBYAQ2

NAPHTALENEQ3

PHOTOSYNTHESISQ3

Abstract

Naphthalene is one of the toxic oil compounds which have hazardous effects on the environment. In this research the physiological effects of this compound on cyanobacteria was evaluated, namely on oil biodegredative autotrophs. For this purpose CYANOBACTERIUM LEPTOLYNGBYA sp. ISC 25 was collected and isolated from regions polluted by oil. After liquid cultivation using carbonless BG11 medium, this CYANOBACTERIUM was treated with (0, 0.025, 0.05, 0.2, 0.4, 0.6, 0.8 and 1%) of naphthalene. Physiological responses like survival, Chla, PHOTOSYNTHESIS and AMMONIUM EXCRETION were investigated in a logarithmic phase of the growth curve. Survival was evaluated spectrometically at 750 nm and PHOTOSYNTHESIS via Oxyview instrument. Results indicated that Chla concentration decreased as naphthalene increased and the reduction slope was higher in 0.6, 0.8 and 1%. In 0.8 and 1% naphthalene, Chla concentration was approximately zero. phycobiliprotein content was enhanced up until 0.2% of naphthalene, but in 0.4, 0.6, and 1% naphthalene decreased significantly. Comparison of survival rates on different days showed that biomass was initially enhanced in all treatments, but decreased at 0.4, 0.6, 0.8 and 1% naphthalene. In other treatments this increasing feature remained although the rate was slower. The rate of hotosynthesis and AMMONIUM EXCRETION decreased in all treatments. In total, this CYANOBACTERIUM can tolerate 0.025, 0.05 and 0.2% of naphthalene and the 0.6 and 1% of naphthalene is toxic for it.

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APA: Copy

ABBAS PANAH, BAHAREH, NAJAFI, FARZANEH, SOLTANI, NEDA, & KHAVARINEZHAD, RAMEZAN ALI. (2012). THE EFFECTS OF NAPHTHALENE ON PHYCOBILIPROTEINS, CARBON AND NITROGEN ASSIMILATION IN CYANOBACTERIUM LEPTOLYNGBYA SP. ISC 25. ENVIRONMENTAL SCIENCES, 9(SPECIAL ISSUE), 39-48. SID. https://sid.ir/paper/400621/en

Vancouver: Copy

ABBAS PANAH BAHAREH, NAJAFI FARZANEH, SOLTANI NEDA, KHAVARINEZHAD RAMEZAN ALI. THE EFFECTS OF NAPHTHALENE ON PHYCOBILIPROTEINS, CARBON AND NITROGEN ASSIMILATION IN CYANOBACTERIUM LEPTOLYNGBYA SP. ISC 25. ENVIRONMENTAL SCIENCES[Internet]. 2012;9(SPECIAL ISSUE):39-48. Available from: https://sid.ir/paper/400621/en

IEEE: Copy

BAHAREH ABBAS PANAH, FARZANEH NAJAFI, NEDA SOLTANI, and RAMEZAN ALI KHAVARINEZHAD, “THE EFFECTS OF NAPHTHALENE ON PHYCOBILIPROTEINS, CARBON AND NITROGEN ASSIMILATION IN CYANOBACTERIUM LEPTOLYNGBYA SP. ISC 25,” ENVIRONMENTAL SCIENCES, vol. 9, no. SPECIAL ISSUE, pp. 39–48, 2012, [Online]. Available: https://sid.ir/paper/400621/en

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