Abstract

HETEROCYSTOUS CYANOBACTERIA: PHOTOCHROMATIC ADAPTATION STUDIES

Anamika Singh and Hema Joshi*

Abstract

The present algal investigation involves heterocystous cyanobacterial strains belongs to two genera namely Nostoc and Scytonema. In the present study we have taken four different species of Nostoc and a single species of Scytonema. These strains were isolated from rice fields of Allahabad District Uttar Pradesh, India. These strains were examined for its growth attributes and pigment composition (phycobilin). These strains are having special concern in microbiology as they are widely used as biofertilizer. Nostoc punctiforme Nostoc ellipsosporum Nostoc muscorum and Nostoc paludosum are the four different species of Nostoc selected for the present study while we have taken single species of Scytonema i. e., Scytonema hofmanni.

Keywords: Blue green algae, rice fields, pigment composition, phycobilins.