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Rajabnasab, Mahboobeh, Khavari-nejad, Ramezan Ali, Shokravi, Shademan, Nejadsattari, Taher. (1396). Adaptation of the Cyanobacterium fischerella sp. ISC 107 to the combined effects of pH and carbon dioxide concentration.. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 7(4), 2163-2171. doi: 10.30495/ijpp.2017.537981
Mahboobeh Rajabnasab; Ramezan Ali Khavari-nejad; Shademan Shokravi; Taher Nejadsattari. "Adaptation of the Cyanobacterium fischerella sp. ISC 107 to the combined effects of pH and carbon dioxide concentration.". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 7, 4, 1396, 2163-2171. doi: 10.30495/ijpp.2017.537981
Rajabnasab, Mahboobeh, Khavari-nejad, Ramezan Ali, Shokravi, Shademan, Nejadsattari, Taher. (1396). 'Adaptation of the Cyanobacterium fischerella sp. ISC 107 to the combined effects of pH and carbon dioxide concentration.', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 7(4), pp. 2163-2171. doi: 10.30495/ijpp.2017.537981
Rajabnasab, Mahboobeh, Khavari-nejad, Ramezan Ali, Shokravi, Shademan, Nejadsattari, Taher. Adaptation of the Cyanobacterium fischerella sp. ISC 107 to the combined effects of pH and carbon dioxide concentration.. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1396; 7(4): 2163-2171. doi: 10.30495/ijpp.2017.537981

Adaptation of the Cyanobacterium fischerella sp. ISC 107 to the combined effects of pH and carbon dioxide concentration.

Iranian Journal of Plant Physiology
مقاله 3، دوره 7، شماره 4، آبان 2017، صفحه 2163-2171    اصل مقاله (946.66 K)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.30495/ijpp.2017.537981
نویسندگان
Mahboobeh Rajabnasab1؛ Ramezan Ali Khavari-nejad* 1؛ Shademan Shokravi2؛ Taher Nejadsattari2
1Department of Biology, Islamic Azad University, Science and Research Branch, Tehran, Iran
2Department of Biology, Islamic Azad University, Gorgan Branch, Gorgan, Iran
چکیده
The aim of this study was to investigate the adaptation of the cyanobacterium Fischerella sp. ISC 107to combined effects of carbon dioxide concentration, acidic and alkalinity. Axenic strain was incubated in BG0-11 medium. Carbon dioxide treatments were limited and relatively non-limited. Acidic (pH 5), neutral (pH7), and alkaline (pH 9) conditions were employed in each treatment. Survival, growth, chlorophyll, phycocyanin, allophycocyanin, and phycoerythrin contents were evaluated in each treatment along with ammonium liberation, frequency, and biometry of heterocyst.  Results showed that like other explored stigonematalean and nostocalean cyanobacteria, this strain cannot grow in acidic condition. Under limited carbon dioxide condition, difference in growth rates were not significant between acidic and alkaline conditions; however, carbon dioxide enrichment caused significant increase in growth rates.  Phycobilisome system of this strain lacked phycoerythrin and may complete its structure both at the core and the rod under alkaline condition. Heterocyst frequency and biometry were maximum at alkaline condition showing significant correlation with nitrogenase activity. Heterocyst showed cylindrical and sub-cylindrical morphology on days 4and 5 after inoculation. Overall, the results showed that this strain may be qualified to be used as a biofertilizer similar to the other cyanobacteria.
 
کلیدواژه‌ها
Acclimation؛ Cyanobacterium؛ Golestan؛ Fischerella؛ paddy field
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