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Occurrence of cyanobacteria (Richelia intracellularis)-diatom (Rhizosolenia hebetata) consortium in the Palk Bay, southeast coast of India

DRS at CSIR-National Institute of Oceanography

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Title Occurrence of cyanobacteria (Richelia intracellularis)-diatom (Rhizosolenia hebetata) consortium in the Palk Bay, southeast coast of India
 
Creator Madhu, N.V.
Paul, M.
Ullas, N.
Ashwini, R.
Rehitha, T.V.
 
Subject Cyanobacteria
diatom
 
Description Symbiotic association of heterocystous cyanobacterium, Richelia intracellularis Schmidt with oceanic centric diatom, Rhizosolenia hebetata is reported from the Palk Bay, southeast coast of India. One to six trichomes of R. intracellularis were occluded inside the periplasmic space of R.hebetata, with their prominent heterocyst pointing towards the valve of the host. Each of these trichomes had 14 to 23 vegetative cells caped by a terminal heterocyst enriched with the nitrogenase enzyme. Density of Rhizosolenia containing R. intracellularis ranged between 120 and 260 cells L-1, and present uniformly in the water column. R. intracellularis is a diazotroph, can contribute substantially to the N2 budgets thereby, promoting a different food web in the Palk Bay.
 
Date 2013-10-08T04:24:45Z
2013-10-08T04:24:45Z
2013
 
Type Journal Article
 
Identifier Indian Journal of Geo-Marine Sciences, vol.42(4); 2013; 453-457
http://drs.nio.org/drs/handle/2264/4380
 
Language en
 
Rights ? IJMS/NISCAIR 2010. CC Attribution 3.0 License
 
Publisher CSIR-NISCAIR