Isolation, Purification and Identification of Blue-green Alga Hapalosiphon aureus and Evaluation of its Histopathological Effects on Fresh Water Snail Lymnaea auricularia

A complex polysaccharide has been isolated from the fresh-water alga, Anabaena cylindrica, grown in a synthetic culture medium. Prolonged acid hydrolysis yielded glucose, xylose, glucuronic acid, galactose, rhamnose, and arabinose in a molar ratio of 5: 4: 4: 1: 1: 1. Chemical fractionations of the polysaccharide material from solution in cupriethylenediamine, and of its acetate from organic solvents indicated chemical homogeneity.

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Histopathological effects of microcystin-LR, a cyclic peptide toxin from the cyanobacterium (blue-green alga) Microcystis aeruginosa on common carp (Cyprinus carpio L.)

Aquatic Toxicology ◽

10.1016/0166-445x(91)90012-x ◽

1991 ◽

Vol 20 (3) ◽

pp. 131-145 ◽

Cited By ~ 147

Author(s):

C.M.I. Råbergh ◽

G. Bylund ◽

J.E. Eriksson

Keyword(s):

Microcystis Aeruginosa ◽

Common Carp ◽

Green Alga ◽

Cyprinus Carpio ◽

Cyclic Peptide ◽

Blue Green Alga ◽

Common Carp Cyprinus Carpio ◽

Carp Cyprinus Carpio ◽

Peptide Toxin ◽

Histopathological Effects

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Polymorphic stages of the fresh water blue-green alga, Gomphosphaeria aponina

ALGAE ◽

10.4490/algae.2010.25.3.115 ◽

2010 ◽

Vol 25 (3) ◽

pp. 115-120 ◽

Cited By ~ 1

Author(s):

V.K. Dwivedi ◽

Richa Tandon ◽

G.L. Tiwari

Keyword(s):

Fresh Water ◽

Green Alga ◽

Blue Green Alga

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Effect of Iron Limitation on the Ultrastructure of Agmenellum Quadruplicatum

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100098551 ◽

1981 ◽

Vol 39 ◽

pp. 410-411

Author(s):

L. P. Hardie ◽

D. L. Balkwill ◽

S. E. Stevens

Keyword(s):

Growth Medium ◽

Green Alga ◽

Natural Habitat ◽

Iron Limitation ◽

Natural Environments ◽

Blue Green Alga ◽

Marine Cyanobacterium ◽

Natural Systems ◽

Thin Sectioning ◽

Agmenellum Quadruplicatum

Agmenellum quadruplicatum is a unicellular, non-nitrogen-fixing, marine cyanobacterium (blue-green alga). The ultrastructure of this organism, when grown in the laboratory with all necessary nutrients, has been characterized thoroughly. In contrast, little is known of its ultrastructure in the specific nutrient-limiting conditions typical of its natural habitat. Iron is one of the nutrients likely to limit this organism in such natural environments. It is also of great importance metabolically, being required for both photosynthesis and assimilation of nitrate. The purpose of this study was to assess the effects (if any) of iron limitation on the ultrastructure of A. quadruplicatum. It was part of a broader endeavor to elucidate the ultrastructure of cyanobacteria in natural systemsActively growing cells were placed in a growth medium containing 1% of its usual iron. The cultures were then sampled periodically for 10 days and prepared for thin sectioning TEM to assess the effects of iron limitation.

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