Dunaliella species

LIPIDS OF HALOTOLERANT AND HALOPHILIC DUNALIELLA SPECIES Overall Lipid Composition... 

Dunaliella species, when grown under normal laboratory cultivation appear green and do not accumulate 3-carotene beyond the amounts normally found in green algae. However, at least one species has been long observed in nature to accumulate massive amounts of 3-carotene (Aasen et al.,... 

The current production of microalgae is mainly focused around a few species, such as Spirulim, Chlorella, Dunaliella or Haematococcus for nutritional purposes (for humans) and animal feed (especially aquaculture). Other sectors, such as cosmetics, effluent treatment and bioenergy, have shown interest, incorporating these or other species of microalgae and cyanobacteria into commercial products. Currently, 95% of the production of microalgae is based on open systems... 

APHA Dunaliella tertiolecta, Species dependent Thalassiosira pseudonana between 102 Skeletonema costatum and 103 Our proposal APHAb Growth rate 18 2 32-65 pmol m 2 s 1... 

DeLorenzo ME, Fleming J (2008) Individual and mixture effects of selected pharmaceuticals and personal care products on the marine phytoplankton species Dunaliella tertiolecta. Arch Environ Contam Toxicol 54 203-210... 

The green microalga Dunaliella tertiolecta is attracted to ammonium and to several amino acids104 105 (Table 12.2). Calcium is required for full development of the response,104 and neither nitrate, urea, other amino acids, phosphate, vitamins, nor sugars elicit significant responses.105 Chemoattraction in a second species, D. salina, has been reported to several amino acids... 

Increased synthesis of MAAs by exposure to high intensity artificial visible light also occurs in the Antarctic diatom Thalassiosira weissflogii, the prasinophyte Pyramimonas parkae, and most markedly in the dinoflagellate Amphidinium carterae (six-fold increase over control).171 However, high visible light exposure does not affect the MAA content of two other unicellular algae, Dunaliella tertiolecta (Chlorophyta) and Isochrysis sp. (Haptophyta). Supplemental exposures with UVA and UVB in combination and alone result in a variety of species-specific responses. 

Hyperosmotic stress was previously shown to decrease PtdOH in Dunaliella salina (Einspahr et al., 1988). However, it causes increased levels of PtdOH in other plant tissues and species (Frank et al., 2000 Munnik et al., 2000 Katagiri et al., 2001 Meijer et al., 2001a, 2002 Munnik, 2001 Munnik... 

Organisms Freshwater species Selenastrum capricornutum, Scenedesmus subspicatus, Chlorella vulgaris, Microcystis aeruginosa Anabaena flos-aqme, and Navicula pelliculosa Saltwater species Skeletonema costatum, Thalassiosira pseudonana, and Dunaliella Tertiolecta... 

Extracellular, acidic, and alkaline phosphatases differ not only in their pH optima, but also in their requirements for Mg2+ and Zn2+, in their inhibition by chelators such as EDTA, and in their sensitivity to fluoride (Cembella et al., 1984). These enzymes, known to occur simultaneously in certain algal species, appear to be common among algae and bacteria, although in some, such as Dunaliella tertiolecta, they are lacking. Some phosphatases, particularly the intracellular ones are always present and active in cells, but the activity of their extracellular counterparts is dependent on phosphorus availability. Like the extracellular deaminases, the synthesis and activity of phosphatases is regulated by the nutritional state of the organisms. 

Ben-Amotz, A. 2004. Industrial production of microalgal cell-mass and secondary products—major industrial species Dunaliella. In Handbook of Microalgal Culture Biotechnology and Applied Phycology (A. Richmond, ed.), pp. 273-280. Blackwell Publishing, Oxford. 

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