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MB 503 MORPHOLOGY AND ECOLOGY OF PHOTOSYNTHETIC MICROORGANISMS                     (3L+1P) I

Objective
To familiarize the students regarding the significance of  photosynthetic bacteria, including cyanobacteria, their morphological features and ecology, concepts of photosynthesis-bacterial and algal photosynthesis, extremophiles and their tolerance mechanisms

Theory

UNIT I
Classification and taxonomy of photosynthetic organisms: Microalgae (cyanobacteria, green algae) and bacteria, Major characteristics of different groups, Photosynthetic eubacteria: Introduction, Characteristics of important genera of photosynthetic eubacteria.

UNIT II
Range of thallus organization and reproduction in microalgae with emphasis on blue-green algae (cyanobacteria) and green algae, Cyanobacteria / Cyanophyceae: Taxonomic approaches and evolutionary trends, Detailed account of different sub-groups.

UNIT III
Microalgal habitats: Physical and chemical characteristics, Ecology of aquatic (fresh and marine) photosynthetic microorganisms, Ecology of photosynthetic terrestrial microorganisms, Soil and rice fields, Cyanobacteria in geothermal habitats, Oil pollution and cyanobacteria, Phylogenetic approaches to study cyanobacterial distribution.

UNIT IV
Limnology, Eutrophication, Energy flow and nutrient cycling, Succession in water bodies, Lime stones, Extremophiles, Halotolerance, Osmotolerance in microalgae and photosynthetic bacteria, UV tolerance and adaptation in microalgae and photosynthetic bacteria.

Practicals
Collection of soil and water samples from IARI fields/stagnant cess pools and extreme environments and enrichment set up for isolation of cyanobacteria/photosynthetic bacteria, Winogradsky column set up for isolation of cyanobacteria/photosynthetic bacteria, Isolation, purification, identification and axenisation of isolates from the enrichment cultures, Microscopic and ecological observations on isolates from extreme environments and analyses of their adaptive mechanisms, Study of ecological habitats of algae, Preservation techniques for algae, Microscopic observations of non- heterocystous cyanobacteria and heterocystous cyanobacteria, Measurement of algal productivity from different ecological habitats, Studies on microalgae/cyanobacteria from polluted habitats, Field trip for collection of samples.

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