World Journal of Microbiology and Biotechnology

, Volume 27, Issue 9, pp 2187–2194 | Cite as

Molecular typing and distribution of filamentous heterocystous cyanobacteria isolated from two distinctly located regions in North-Eastern India

  • Chingkheihunba AkoijamEmail author
  • Arvind Kumar Singh
Original Paper


The diversity of cyanobacteria in the North-Eastern region of India has not been studied except for a few sporadic and inconclusive reports. Loktak Lake is a huge reservoir for various kinds of organisms, including cyanobacteria. The present study describes the isolation and molecular diversity of 72 filamentous, heterocystous cyanobacterial strains isolated from samples collected from Loktak Lake, its adjoining rice fields and rice fields in Indian Council of Agricultural Research (ICAR) complex, Shillong, Meghalaya, India. The isolated strains belonged to the genera Anabaena, Nostoc, Calothrix, Cylindrospermum and Mastigocladus. The molecular analysis of isolates revealed the occurrence of certain strains being present in the sample collected from the rice fields falling in the catchment area of Loktak Lake, Manipur and rice fields in ICAR complex, Shillong, Meghalaya both. A polyphasic approach based on morphological features and PCR based molecular polymorphism revealed enormous level of molecular diversity. Out of three primers targeted regions used for determining genetic polymorphism, STRR1A produced best fingerprint profile of cyanobacterial strains. The morphological diversity of isolates was assured by light microscope whereas PCR based multiple fingerprint profile was used for molecular characterization. Molecular typing using short tandemly repeated repetitive STRR1A sequences as primer provided strain specific fingerprint profiles of the isolates.


Loktak lake Cyanobacteria Anabaena STRR1A Diversity Rice field 



Financial assistance from Department of Science & Technology, Government of India vide project number SP/SO/PS-56/2003 is gratefully acknowledged. Authors would like to thank Dr KD Pandey, Botany Department, BHU, Varanasi, India for assistance in strain identification and Akoijam Rina for checking the manuscript.

Supplementary material

11274_2011_684_MOESM1_ESM.pdf (564 kb)
Supplementary material 1 (PDF 564 kb)


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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Department of BiochemistryNorth-Eastern Hill UniversityShillongIndia

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