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Monostroma
In taxonomy, ''Monostroma'' is a genus of marine green algae (seaweed), specifically of the Monostromataceae.〔See the NCBI (webpage on Monostroma ). Data extracted from the (【引用サイトリンク】 title=NCBI taxonomy resources )〕 As the name suggests, algae of this genus are monostromatic (single cell layered). ''Monostroma kuroshiensis'', an algae of this genus, is commercially cultivated in East Asia and South America for the edible product "hitoegusa-nori" or "hirohano-hitoegusa nori", popular sushi wraps. ''Monostroma'' oligosaccharides with degree of polymerization 6 prepared by agarase digestion from ''Monostroma nitidum'' polysaccharides have been shown to be an effective prophylactic agent during ''in vitro'' and ''in vivo'' tests against Japanese encephalitis viral infection. The sulfated oligosaccharides from ''Monostroma'' seem to be promising candidates for further development as antiviral agents. The ''Monostroma'' genus is the most widely cultivated genus among green seaweeds. ==Classification== Species-level classification within this genus is quite problematic and there are no consensus exists among algal taxonomists. This genus is oftentimes referred as "''Gayralia''", however ''Gayralia'' and ''Monostroma'' are congeneric. A number of monostromatic algal species have been removed from this genus, including Kornmannia, Ulvopsis and Capsosiphon. Currently accepted working-classification of monostromatic green algae〔Bast, F. 2011. Monostroma: the Jeweled Seaweed for Future. LAP LAMBERT Academic Publishing GmbH & Co. KG, 66121 Saarbrücken, Germany:〕 is provided as a figure. A taxonomic field-identification dichotomous key for this genus is available 〔Bast, F. 2012. Systematics and Taxonomic Keys for the Marine Green Algal Family Monostromataceae. In D. M. Krueger, H (Ed.), Algae: Ecology, Economic Uses and Environmental Impact (pp. 105-120).Nova Publishers New York. 105-120〕
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