Hae Jin Jeong
Affiliation: Seoul National University
- Jeong H, Yoo Y, Kang N, Lim A, Seong K, Lee S, et al. Heterotrophic feeding as a newly identified survival strategy of the dinoflagellate Symbiodinium. Proc Natl Acad Sci U S A. 2012;109:12604-9 pubmed publisher..and remove substantial portions of Synechococcus populations from coral reef waters. Our discovery of Symbiodinium's feeding alters our conventional views of the survival strategies of photosynthetic Symbiodinium and corals. ..
- Lim A, Jeong H, Ok J, Kim S. Feeding by the harmful phototrophic dinoflagellate Takayama tasmanica (Family Kareniaceae). Harmful Algae. 2018;74:19-29 pubmed publisher..helix on the same prey species. Therefore, the mixotrophic ability of T. tasmanica is weaker than that of T. helix, and also T. tasmanica may have an ecological niche different from that of T. helix in marine ecosystems. ..
- Jeong H, Ok J, Lim A, Kwon J, Kim S, Lee S. Mixotrophy in the phototrophic dinoflagellate Takayama helix (family Kareniaceae): Predator of diverse toxic and harmful dinoflagellates. Harmful Algae. 2016;60:92-106 pubmed publisher..helix is a mixotrophic dinoflagellate that is able to feed on a diverse range of toxic species and, thus, its mixotrophic ability should be considered when studying red tide dynamics, food webs, and dinoflagellate evolution. ..
- Lee K, Jeong H, Kwon J, Kang H, Kim J, Jang S, et al. Mixotrophic ability of the phototrophic dinoflagellates Alexandrium andersonii, A. affine, and A. fraterculus. Harmful Algae. 2016;59:67-81 pubmed publisher..6 cells predator-1d-1). This evidence suggests that the mixotrophic ability of A. andersonii should be taken into consideration in predicting the outbreak, persistence, and decline of its harmful algal blooms. ..
- Lee M, Jeong H, Jang S, Lee S, Kang N, Lee K, et al. Most Low-Abundance "Background" Symbiodinium spp. Are Transitory and Have Minimal Functional Significance for Symbiotic Corals. Microb Ecol. 2016;71:771-83 pubmed publisher..The successful integration between host and symbiont into a stable functional unit should therefore be considered when defining host-symbiont specificity. ..
- Kim J, Jeong H, Lim A, Rho J, Lee S. Killing potential protist predators as a survival strategy of the newly described dinoflagellate Alexandrium pohangense. Harmful Algae. 2016;55:41-55 pubmed publisher..pohangense cells ml-1 and equivalent culture filtrates. The relatively slow growing A. pohangense may form blooms by reducing mortality due to predation through killing potential protist predators. ..
- Jeong H, Du Yoo Y, Kim J, Kim T, Kim J, Kang N, et al. Mixotrophy in the phototrophic harmful alga Cochlodinium polykrikoides (Dinophycean): prey species, the effects of prey concentration, and grazing impact. J Eukaryot Microbiol. 2004;51:563-9 pubmed..e. 0.1-53% of cryptophyte populations were removed by a C. polykrikoides population in 1 h). The results of the present study suggest that C. polykrikoides sometimes has a considerable grazing impact on populations of cryptophytes...
- Jeong H, Lim A, Jang S, Yih W, Kang N, Lee S, et al. First report of the epiphytic dinoflagellate Gambierdiscus caribaeus in the temperate waters off Jeju Island, Korea: morphology and molecular characterization. J Eukaryot Microbiol. 2012;59:637-50 pubmed publisher..In phylogenetic trees based on SSU and LSU rDNA sequences, our Korean strain was basal to the clade consisting of the NOAA strains of G. caribaeus, which in turn was sister clade to all reported G. carpenteri strains...
- Kwon J, Jeong H, Kim S, Jang S, Lee K, Seong K. Newly discovered role of the heterotrophic nanoflagellate Katablepharis japonica, a predator of toxic or harmful dinoflagellates and raphidophytes. Harmful Algae. 2017;68:224-239 pubmed publisher..The results of the present study clearly show that K. japonica is a predator of diverse phytoplankton, including toxic or harmful algae, and may also affect the dynamics of red tides caused by these prey species. ..
- Ok J, Jeong H, Lim A, Lee K. Interactions between the mixotrophic dinoflagellate Takayama helix and common heterotrophic protists. Harmful Algae. 2017;68:178-191 pubmed publisher..Therefore, reciprocal predation, lysis, no feeding, and the low ingestion rates of the common protists preying on T. helix may result in a low mortality rate due to predation, thereby compensating for this species' low growth rate. ..
- Yoo Y, Seong K, Jeong H, Yih W, Rho J, Nam S, et al. Mixotrophy in the marine red-tide cryptophyte Teleaulax amphioxeia and ingestion and grazing impact of cryptophytes on natural populations of bacteria in Korean coastal waters. Harmful Algae. 2017;68:105-117 pubmed publisher..Cryptophytes, therefore, likely play important roles in marine food webs and may exert a considerable potential grazing impact on the populations of marine bacteria. ..
- Lee S, Jeong H, Seong K, Lim A, Kim J, Lee K, et al. Improved real-time PCR method for quantification of the abundance of all known ribotypes of the ichthyotoxic dinoflagellate Cochlodinium polykrikoides by comparing 4 different preparation methods. Harmful Algae. 2017;63:23-31 pubmed publisher..Thus, our results suggest that the CCD method is a more effective tool to quantify the abundance of C. polykrikoides than the conventional method, CDD, and the FDD and FCD methods. ..
- Jang S, Jeong H, Kwon J, Lee K. Mixotrophy in the newly described dinoflagellate Yihiella yeosuensis: A small, fast dinoflagellate predator that grows mixotrophically, but not autotrophically. Harmful Algae. 2017;62:94-103 pubmed publisher..This evidence suggests that Y. yeosuensis may be an effective mixotrophic dinoflagellate predator on Pyramimonas and Teleaulax, and occurs abundantly during or after blooms of these two prey species. ..
- Jeong H, Kim J, Lee K, Seong K, Yoo Y, Kang N, et al. Differential interactions between the nematocyst-bearing mixotrophic dinoflagellate Paragymnodinium shiwhaense and common heterotrophic protists and copepods: Killer or prey. Harmful Algae. 2017;62:37-51 pubmed publisher..Thus, P. shiwhaense might play diverse ecological roles in marine planktonic communities by having an advantage over competing phytoplankton in anti-predation against potential protistan grazers. ..
- Kim J, Jeong H, Lim A, Kwon J, Lee K, Park K, et al. Removal of two pathogenic scuticociliates Miamiensis avidus and Miamiensis sp. using cells or culture filtrates of the dinoflagellate Alexandrium andersonii. Harmful Algae. 2017;63:133-145 pubmed publisher..The results of this study provided the basis for developing the method to control scuticociliate populations and understanding interactions between scuticociliates and phototrophic dinoflagellates in marine ecosystems. ..