Suradkar A, , A. and Villanueva C, , C. and Gaysina LA, , L.A. and Casamatta DA,, D.A. and Saraf A, , A. and Dig, G. and Mergu R, , R. and Singh P. , P. (2017) Nostoc thermotolerans sp. nov., a soil dwelling species of Nostoc (Cyanobacteria) isolated from Madhya Pradesh, India. International Journal of Systematic and Evolutionary Microbiology .

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Abstract

A filamentous, soil dwelling cyanobacterial strain (9C-PS) was isolated from Mandsaur, Madhya Pradesh, India and is being described as new species of Nostoc. Extensive morphological and molecular characterization along with thorough assessment of ecology was performed. The style of filament orientation, type and nature of the sheath (e.g., distribution and visibility across the trichome), and vegetative and heterocyte cell dimensions and shape were assessed for more than a year employing both culture and naturally occurring samples. Sequencing of the 16S rRNA gene showed 94% sequence similarity with Nostoc piscinale CENA21 while the analyses of the secondary structures of the 16S-23S ITS region showed unique folding patterns that differentiated this strain from other species of Nostoc. The rbcl and rpoC1 sequence was 91% and 94% similar to Nostoc sp. PCC 7524 and Nostoc piscinale CENA21 respectively, while the nifD gene sequence similarity was found to be 99% with Nostoc piscinale CENA21. The phenotypic, ecological, genetic, and phylogenetic observations indicate that strain 9C-PS is a new species in the genus Nostoc with the name proposed being Nostoc thermotolerans, sp. nov. according to the International Code of Nomenclature for Algae, Fungi, and Plants.

Item Type:	Article
Subjects:	Insect Molecular Biology
Depositing User:	Mr. Rameshwar Nema
Date Deposited:	24 Apr 2017 06:44
Last Modified:	24 Apr 2017 06:44
URI:	http://nccs.sciencecentral.in/id/eprint/407

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