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dc.contributor.authorSuresh Kumar-
dc.date.accessioned2018-02-28T01:30:29Z-
dc.date.available2018-02-28T01:30:29Z-
dc.date.issued2015-11-
dc.identifier.citationMARINE DRUGS, v. 13, No. 11, Page. 6740-6758en_US
dc.identifier.issn1660-3397-
dc.identifier.urihttp://www.mdpi.com/1660-3397/13/11/6740/htm-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/40949-
dc.description.abstractAfter in situ incubation at the site for a year, phytoplanktons in surface water were exposed to natural light in temperate lakes ( every month); thereafter, the net production rate of photoprotective compounds ( mycosporine-like amino acids, MAAs) was calculated using C-13 labeled tracer. This is the first report describing seasonal variation in the net production rate of individual MAAs in temperate lakes using a compound-specific stable isotope method. In the mid-latitude region of the Korean Peninsula, UV radiation ( UVR) usually peaks from July to August. In Lake Paldang and Lake Cheongpyeong, diatoms dominated among the phytoplankton throughout the year. The relative abundance of Cyanophyceae ( Anabaena spiroides) reached over 80% during July in Lake Cheongpyeong. Changes in phytoplankton abundance indicate that the phytoplankton community structure is influenced by seasonal changes in the net production rate and concentration of MAAs. Notably, particulate organic matter ( POM) showed a remarkable change based on the UV intensity occurring during that period; this was because of the fact that cyanobacteria that are highly sensitive to UV irradiance dominated the community. POM cultured in Lake Paldang had the greatest shinorine ( SH) production rate during October, i. e., 83.83 +/- 10.47 fgC center dot L-1 center dot h(-1). The dominance of diatoms indicated that they had a long-term response to UVR. Evaluation of POM cultured in Lake Cheongpyeong revealed that there was an increase in the net MAA production in July ( when UVR reached the maximum); a substantial amount of SH, i. e., 17.62 +/- 18.34 fgC center dot L-1 center dot h(-1), was recorded during this period. Our results demonstrate that both the net production rate as well as the concentration of MAAs related to photoinduction depended on the phytoplankton community structure. In addition, seasonal changes in UVR also influenced the quantity and production of MAAs in phytoplanktons ( especially Cyanophyceae).en_US
dc.description.sponsorshipWe thank Hae-Kyung Park, Young-Nam Kim and Sua Jeon for providing assistance in laboratory and field work. This research was supported by the research fund of Hanyang University, South Korea (HY-2014-P). The authors thank the anonymous reviewers for useful suggestions improving this contribution.en_US
dc.language.isoen_USen_US
dc.publisherMDPI AGen_US
dc.subjectchlrophyll (chl) aen_US
dc.subjectlake; mycosporine-like amino acids (MAAs)en_US
dc.subjectphytoplanktonen_US
dc.subjectultraviolet radiation (UVR)en_US
dc.subjectULTRAVIOLET-B RADIATIONen_US
dc.subjectSOLAR UV-RADIATIONen_US
dc.subjectMARINE-PHYTOPLANKTONen_US
dc.subjectFRESH-WATERen_US
dc.subjectPHOTOPROTECTIVE COMPOUNDSen_US
dc.subjectCHONDRUS-CRISPUSen_US
dc.subjectMAASen_US
dc.subjectPHOTOSYNTHESISen_US
dc.subjectCYANOBACTERIUMen_US
dc.subjectASSEMBLAGESen_US
dc.titleSeasonal Changes in Mycosporine-Like Amino Acid Production Rate with Respect to Natural Phytoplankton Species Compositionen_US
dc.typeArticleen_US
dc.relation.no11-
dc.relation.volume13-
dc.identifier.doi10.3390/md13116740-
dc.relation.page6740-6758-
dc.relation.journalMARINE DRUGS-
dc.contributor.googleauthorHa, Sun-Yong-
dc.contributor.googleauthorLee, Yeonjung-
dc.contributor.googleauthorKim, Min-Seob-
dc.contributor.googleauthorKumar, K. Suresh-
dc.contributor.googleauthorShin, Kyung-Hoon-
dc.relation.code2015009411-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E]-
dc.sector.departmentMARINE SCIENCES AND CONVERGENT TECHNOLOGY-
dc.identifier.pidkumar-


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