https://repository.kopri.re.kr/handle/201206/5522 2026-04-04T17:07:06Z 2026-04-04T17:07:06Z RA Quinones RR Gonzalez Jose Iriarte CP Valenzuela Kang, Sung-Ho https://repository.kopri.re.kr/handle/201206/5900 2022-03-24T07:12:10Z 2006-01-01T00:00:00Z

Title: Enzyme activities of phytoplankton in the South Shetland Islands (Antarctica) in relation to nutrients and primary production Authors: RA Quinones; RR Gonzalez; Jose Iriarte; CP Valenzuela; Kang, Sung-Ho Abstract: Enzyme activities of phytoplankton in the South Shetland Islands (Antarctica) in relation to nutrients and primary production

2006-01-01T00:00:00Z C.M.PUESCHEL Kim, Gwang Hoon J.A.WEST GA YOUN CHO Kang, Sung-Ho Klochkova https://repository.kopri.re.kr/handle/201206/7228 2022-03-24T07:11:38Z 2006-01-01T00:00:00Z

Title: Biology of a terrestrial green alga Chlorococcum sp.(Clorococcales, Chlorophyta) collected from the Mirusaji stupa in Korea Authors: C.M.PUESCHEL; Kim, Gwang Hoon; J.A.WEST; GA YOUN CHO; Kang, Sung-Ho; Klochkova Abstract: Biology of a terrestrial green alga Chlorococcum sp.(Clorococcales, Chlorophyta) study

2006-01-01T00:00:00Z Lee, Jin Hwan Joo, Hyong-Min Kang, Sung-Ho Kang, Jae-Shin Chung, Kyung Ho https://repository.kopri.re.kr/handle/201206/5965 2022-03-24T07:12:12Z 2005-01-01T00:00:00Z

Title: Phytoplankton and Environmental Factors in the Southeastern Barents Sea during August 2003 Authors: Lee, Jin Hwan; Joo, Hyong-Min; Kang, Sung-Ho; Kang, Jae-Shin; Chung, Kyung Ho Abstract: In order to grasp the structure and dynamics of phytoplankton communities, chlorophyll-a (Chl-a) and cell abundance were measured at 20 stations during the period from August 9 to August 21, 2003 in the southeastern Barents Sea on surface and subsurface chlorophyll maximum depth (SCM). Surface temperatures were varied from minimum 0.7oC(st. 18) to maximum 10.4oC(st. 1). Salinities were varied from minimum 29.9 psu(st. 18) to maximum 35.8 psu(st. 2). The maximum nutrient(phosphate, nitrate, silicate) concentrations were 0.12 M, 0.11 M, 7.53 M and minimum concentrations were 0.01 M, 0.03 M, 1.43 M, respectively. On SCM physical environmental factor were almost similar. Chl-a concentrations ranged from 0.23 to 2.13g chl-a l1 at SCM. Nano- and pico phytoplankton were the important contributors for increase of the Chl-a. It was about seven times difference between highest concentration to lowest. Phytoplankton communities were composed of diatoms, dinoflagellates, cryptophyceae, silicoflagellate, and prymnesiophyceae showing 37 taxa at surface and 38 taxa at SCM. Picophytoplankton was the most dominant in all stations and all layers, but the second groups were 2 and/or 3 taxa. Phytoplankton abundance ranged from minimum 4.3105 cells l1(st. 20) to maximum 2.4×106 cells l1(st. 17) at surface water. As a result, phytoplankton might be controlled by physical factors such as North Atlantic ocean currents and northern melt water among environmental factors in Barents Sea. In addition the dominant species were nano- and pico phytoplankton such as Phaeocystis, Cryptomonas and Dinobryon in the study area.

2005-01-01T00:00:00Z Lee, S.Y. Kang, Sung-Ho Jin, EonSeon https://repository.kopri.re.kr/handle/201206/5940 2022-03-24T07:12:01Z 2005-01-01T00:00:00Z

Title: Characterization of the gene for the light-harvesting peridinin-chlorophyll-protein of Alexandrium tamarense Authors: Lee, S.Y.; Kang, Sung-Ho; Jin, EonSeon Abstract: Photosynthetic dinoflagellates contain a water-soluble, light-harvesting antenna called the peridinin-chlorophyll-protein (PCP) complex, which has an apoprotein with no sequence similarity to other known proteins. There are two forms of PCP apoproteins;the 15-kDa short form and the 32- to 35-kDa long form. The present study describes the PCP protein and its cDNA from Alexandrium tamarense. A cDNA library was constructed from mRNA isolated from A. tamarense. The complete PCP cDNA was generated by reverse-transcription coupled to polymerase chain reaction (RT-PCR), together with rapid-amplification of cDNA ends (RACE). The A. tamarense PCP cDNA encoded a 55-amino acid signal peptide and a 313-amino acid mature protein with a calculated mass of 32 kDa, which corresponded to that of the long form of PCP. Phylogenetic analysis indicated that the sequence of A. tamarense PCP did not cluster with the short-form PCPs, to which it was only about 55% identical, but which were 79-83% identical to other long-form PCPs. The deduced amino acid sequence of A. tamarense PCP contains an internal duplication, which suggests the possibility that long-form PCPs arose by gene duplication or by the fusion of genes encoding the short form. The abundance of PCP mRNA changed substantially in response to different light conditions, indicating the possible existence of a photo-acclimation response in A. tamarense.

2005-01-01T00:00:00Z