Laminarin,a Major Polysaccharide in Stramenopiles |
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| Authors: | Jichen Chen Jianchao Yang Hong Du Muhmmad Aslam Wanna Wang Weizhou Chen Tangcheng Li Zhengyi Liu Xiaojuan Liu |
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| Affiliation: | 1.Guangdong Provincial Key Laboratory of Marine Biotechnology, STU-UNIVPM Joint Algal Research Center, Institute of Marine Sciences, Shantou University, Shantou 515063, China; (J.C.); (H.D.); (M.A.); (W.W.); (W.C.); (T.L.);2.Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou 510000, China;3.Yantai Academy of Agricultural Sciences, Yantai 265500, China;4.Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; |
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| Abstract: | During the processes of primary and secondary endosymbiosis, different microalgae evolved to synthesis different storage polysaccharides. In stramenopiles, the main storage polysaccharides are β-1,3-glucan, or laminarin, in vacuoles. Currently, laminarin is gaining considerable attention due to its application in the food, cosmetic and pharmaceuticals industries, and also its importance in global biogeochemical cycles (especially in the ocean carbon cycle). In this review, the structures, composition, contents, and bioactivity of laminarin were summarized in different algae. It was shown that the general features of laminarin are species-dependence. Furthermore, the proposed biosynthesis and catabolism pathways of laminarin, functions of key genes, and diel regulation of laminarin were also depicted and comprehensively discussed for the first time. However, the complete pathways, functions of genes, and diel regulatory mechanisms of laminarin require more biomolecular studies. This review provides more useful information and identifies the knowledge gap regarding the future studies of laminarin and its applications. |
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| Keywords: | glucan laminarin stramenopiles microalgae |
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