Marine Natural Products. XXIX. Heterosigma-glycolipids I, II, III, and IV, Four Diacylglyceroglycolipids Possessing .OMEGA.3-Polyunsaturated Fatty Acid Residues, from the Raphidophycean Dinoflagellate Heterosigma akashiwo.
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Bacterial chemotaxis towards the extracellular products of the toxic phytoplankton Heterosigma akashiwo
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Heterosigma akashiwo is an excellent candidate for growth on industrial emissions since this alga has the ability to metabolize gaseous nitric oxide (NO) into cellular nitrogen via a novel chimeric protein (NR2-2/2HbN) and also tolerates wide fluctuations in temperature, salinity, and nutrient conditions. Here, we evaluated biomass productivity and composition, photosynthetic efficiency, and ex...
متن کاملSelective toxic effects of polyunsaturated fatty acids derived from Ulva fasciata on red tide phyotoplankter species.
Alpha-linolenic acid and linoleic acid isolated from Ulva fasciata showed toxic effects on red tide phytoplankters in a concentration-dependent manner. Among six species tested, raphidophycean flagellate Heterosigma akashiwo was the most susceptible to these fatty acids, and 50% lethal concentrations (LC50) of alpha-linolenic acid and linoleic acid were estimated to be 0.58 and 1.91 microg/ml r...
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We report here the complete mitochondrial genome sequences of four strains of bloom-forming raphidophytes from Heterosigma akashiwo These 39-kb sequences contain 42 protein-, two rRNA-, and 26 tRNA-coding sequences. Notable sequence variations were observed among these four newly sequenced and three previously characterized strains, suggesting their potential usage as strain-specific markers.
متن کاملSHORT COMMUNICATION Bacterial chemotaxis towards the extracellular products of the toxic phytoplankton Heterosigma akashiwo
The occurrence of harmful algal blooms (HABs), caused by toxic phytoplankton, has detrimental environmental, economic and human health effects within many aquatic habitats (Horner et al., 1997). Understanding the environmental conditions that control the development and decline of HABs has consequently become an important element of ecosystem management within heavily affected environments. Pot...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1992
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.40.1404