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The biosynthetic pathways of eicosapentaenoic acid (20:5n-3) in microalgae, in general, and in Porphyridium cruentum, in particular, are not known. Some of the putative intermediates along the suggested pathways could not be detected probably due to their low endogenous level. In order to increase the endogenous levels of the intermediates, we provided(More)
Treating the red alga, Porphyridium cruentum, with the herbicide, SAN 9785, an inhibitor of chloroplastic o~3-desaturation, resulted in a decrease in the proportion of eicosapentaenoic acid (EPA), especially in monogalactosyldiacylglycerols (MGDG). However, when the eustigmatophyte, Monodus subterraneus, was treated with this herbicide, the proportion of(More)
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