Studing of survival, growth, pigment composition and amelioration ability in cyanobacterium Nostoc sp.FS77 collected from paddy-field of Golestan Province under different salinities

Subject Areas : Genetic

زینب بادلی ¹ , Shadman Shokravi ² , Jallal aldin Derakhshanpour ³ , رقیه بادلی ⁴

1 - 1کارشناس‌ارشد، باشگاه پژوهشگران جوان و نخبگان، واحد گرگان، دانشگاه آزاد اسلامی، گرگان
2 - Dept. of biology, Gorgan Branch, Islamic Azad Univ ,Gorgan, Iran.
3 - Dept. of Microbiology, Tonekaboon Branch, Islamic Azad University, Tonekaboon, Iran.
4 - 4دانشجو داروسازی، دانشکده داروسازی، دانشگاه ازاد اسلامی، تهران

Received: 2012-03-11 Accepted : 2012-07-18 Published : 2014-04-21

Keywords: growth, Paddy field, Salinity amelioration, Nostoc sp.FS77, Pigment composition,

Abstract :

Cyanobacterium Nostoc sp.FS77 can be considered as an interesting microorganism for the ability of amelioration Compounds. With respect to possible applied potential of this strain, considering these purpose, viability, growth ,pigment composition and amelioration ability under different salinities have been studied under different salinities. Then Sample soils were cultured, after purification and identification, selected cyanbacterium Nostoc sp.FS77 and has been incubated in to BG110 culture medium and under continuous white irradiation(flourcent light) with 2 μE.m-2.s-1 illumination, 28oC temperature. Wide range of sodium chloride salinities (0,5,10,15,20,25,30%) were Treated. Survival, growth, specific growth rate, chlorophyll, phycoerythrin, phcocyanin, allophycocyanin and carotenoides have been analyzed. Results showed the specific growth rate, reach to maximum between (0-15%) salinity, though at the other salinities survival could be remained but naturally at the lower level. The amounts of EC were decreasing obviously during different days in the following salinity. Pigment composition shows the highest rate at this salinity too. As a whole, results introduce this strain as the potent one for future biofertilizer.