Cite this paper:
YAO Jianting, SHUAI Li, LI Shengyao, XU Caolu, WANG Xiuliang. Genetic analysis of selected Sargassum fusiforme (Harvey) Setchell (Sargassaceae, Phaeophyta) strains with RAPD and ISSR markers[J]. HaiyangYuHuZhao, 2019, 37(3): 783-789

Genetic analysis of selected Sargassum fusiforme (Harvey) Setchell (Sargassaceae, Phaeophyta) strains with RAPD and ISSR markers

YAO Jianting1,2,3, SHUAI Li4, LI Shengyao5, XU Caolu5, WANG Xiuliang1,2,3
1 Key Lab of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
2 Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;
3 Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China;
4 School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China;
5 Dongtou Yangqicai Research Institute, Wenzhou 325700, China
Since the 1980s, Sargassum fusiforme has been cultivated in Zhejiang, South China, and nowadays it becomes one of the important commercial seaweeds in China. With traditions of eating habits in the East Asian countries, this brown alga is used as food, because it contained functional oligo/polysaccharides and chemical components, and was regarded playing roles in antioxidant activities and regulating immunology. Through over 15 years' selection, breeding and cultivation, we obtained three strains with good traits and testified their characters during the production, which included the cultivars with high yield and other two good characters, either all the selected strains were applied in the Sargassum production. To avoid confusion during the selection and nursery, it was preferred to establish one fingerprint for distinguishing the Sargassum cultivars from different strains. Random amplified polymorphic DNA (RAPD) and inter-simple sequence repeat (ISSR) methods were adopted to analyze the genetic diversities of the selected S. fusiforme strains. With that, one fingerprint with RAPD markers was constructed, and one sequence characterized amplified region (SCAR) marker to S. fusiforme was obtained. It is indicated that the applied fingerprint could be valid in S. fusiforme genetic and germplasm justification, and will be positive to molecular marker assistance in its selection and cultivation.
Key words:    Sargassum fusiforme|random amplified polymorphic DNA (RAPD)|inter-simple sequence repeat (ISSR)|sequence characterized amplified region (SCAR)|genetic analysis   
Received: 2018-05-05   Revised: 2018-08-02
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