A checklist of Cyanobacteria (Blue-green algae) has been made by reviewing available literature in order to contribute the knowledge biodiversity algae Punjab state India. The list records 317 taxa phylum distributed among 74 genera, 32 families, and six orders. Oscillatoriales 115 taxa, followed Nostocales (84), Synechococcales (60), Chroococcales (49), Spirulinales (8), Pleurocapsales (1). fa...

(1) The intensity dependence and spectral variations during the fast transient of chlorophyll a (Chi a) fluorescence have been analyzed in the blue-green alga Anacystis nidulans. (Unlike the case of eukaryotic unicellular green or red algae, the fast fluorescence induction characteristics of the prokaryotic blue-green algae had not been documented before.) (2) Dark adapted cells of Anacystis ex...

Every organism has different potential to accumulate NO3 from the environment. Nitrate reduction processes are perhaps most significant in maintaining water quality by alteration of nitrate to nitrite. A comparative study between the nitrate reductase NR activity of green and blue green algae in presence of heavy metals is being conducted to present a situation where nitrate reductase process m...

The physico-chemical characteristics, phytoplankton composition and distribution at the East mole area of the Lagos harbour were investigated between January and June, 2012. The physicochemical conditions varied between high brackish and sea water chemistry. Records were Air (26 33 0 C) and Water temperatures (28 31 0 C), Salinity (19.40 30.72 0 /00), Nutrients (Nitrate ≥ 3.11 mg/L; Phosphate ≥...

Nitrogen fixation (C(2)H(2) reduction) by algae in flooded soil was limited by interactions within the algal community. Nitrogen fixation by either indigenous algae or Tolypothrix tenuis was reduced severalfold by a dense suspension of the green alga Nephrocytium sp. Similarly, interactions between the nitrogen-fixing alga (cyanobacterium) Aulosira 68 and natural densities of indigenous algae l...

Algae can tolerate a broad range of growing conditions but extreme conditions may lead to the generation of highly dangerous reactive oxygen species (ROS), which may cause the deterioration of cell metabolism and damage cellular components. The antioxidants produced by algae alleviate the harmful effects of ROS. While the enhancement of antioxidant production in blue green algae under stress ha...

Algae include primitive thalloid plants having enormous uses. Despite of many beneficial activities, some algae cause sickness or death to the living organisms, called 'toxic algae'. Not only fresh water are toxic but marine also toxic. A species may have different strains, which be and other non-toxic. Toxic affect body parts an organism. Algal blooms generally appear in green, blue br...

Inositol and choline were present in varying amounts among the species of Rhodophyta, Phaeophyta, Chlorophyta, and Euglenophyta examined. However, in the two members of the order Fucales (division Phaeophyta) examined, no detectable amounts of choline were found. In contrast, the species of Cyanophyta examined contained no detectable amounts of either choline or inositol. All species of the fun...

Cyanobacteria (blue-green algae) are abundant in fresh, brackish and marine waters worldwide. When toxins produced by cyanobacteria are present in the aquatic environment, seafood harvested from these waters may present a health hazard to consumers. Toxicity hazards from seafood have been internationally recognised when the source is from marine algae (dinoflagellates and diatoms), but to date ...