Journal of Microbiology

Dockyu Kim

8 Articles

Microbial metabolic responses and CO2 emissions differentiated by soil water content variation in subarctic tundra soils: Dockyu Kim , Namyi Chae , Mincheol Kim , Sungjin Nam , Tai Kyoung Kim , Ki-Tea Park , Bang Yong Lee , Eungbin Kim , Hyoungseok Lee; J. Microbiol. 2022;60(12):1130-1138. Published online November 24, 2022; DOI: https://doi.org/10.1007/s12275-022-2378-3

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Recent rapid air temperature increases across the northernlatitude tundra have prolonged permafrost thawing and snow melting periods, resulting in increased soil temperature (Ts) and volumetric soil water content (SWC). Under prolonged soil warming at 8°C, Alaskan tundra soils were incubated in a microcosm system and examined for the SWC differential influence on the microbial decomposition activity of large molecular weight (MW) humic substances (HS). When one microcosm soil (AKC1-1) was incubated at a constant SWC of 41% for 90 days (T = 90) and then SWC was gradually decreased from 41% to 29% for another T = 90, the initial HS was partly depolymerized. In contrast, in AKC1-2 incubated at a gradually decreasing SWC from the initial 32% to 10% for T = 90 and then increasing to 27% for another T = 90, HS depolymerization was undetected. Overall, the microbial communities in AKC1-1 could maintain metabolic activity at sufficient and constant SWC during the initial T = 90 incubation. In contrast, AKC1-2 microbes may have been damaged by drought stress during the drying SWC regimen, possibly resulting in the loss of HS decomposition activity, which did not recover even after re-wetting to an optimal SWC range (20–40%). After T = 90, the CO2 production in both treatments was attributed to the increased decomposition of small-MW organic compounds (including aerobic HS-degradative products) within an optimal SWC range. We expect this study to provide new insights into the early effects of warming- and topography-induced SWC variations on the microbial contribution to CO2 emissions via HS decomposition in northern-latitude tundra soil.

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Unidirectional freeze–thaw redistributes water and amplifies soil microbial heterogeneity in a mecrocosm experiment
Huimin Liu, Yaxian Hu, Yuan Song, Xianwen Li, Xiaorong Wei
Geoderma.2025; 453: 117126. CrossRef
Humic substance turnover by bacterial decomposers in the maritime Antarctic soil
Dockyu Kim, Mincheol Kim, Sungho Woo, Eungbin Kim, Hyoungseok Lee, Monika Gorzelak
Soil Research.2025;[Epub] CrossRef
Analysis of CO2 Emission from Urban Soils of the Kola Peninsula (European Arctic)
M. V. Korneykova, V. I. Vasenev, N. V. Saltan, M. V. Slukovskaya, A. S. Soshina, M. S. Zavodskikh, Yu. L. Sotnikova, A. V. Dolgikh
Eurasian Soil Science.2023; 56(11): 1653. CrossRef
Analysis of CO₂ Emission by Urban Soils under the Conditions of the Kola North
M. V. Korneykova, V. I. Vasenev, N. V. Saltan, M. V. Slukovskaya, A. S. Soshina, M. S. Zavodskikh, Y. L. Sotnikova, A. V. Dolgikh
Почвоведение.2023; (11): 1385. CrossRef

Soil water content as a critical factor for stable bacterial community structure and degradative activity in maritime Antarctic soil: Dockyu Kim , Namyi Chae , Mincheol Kim , Sungjin Nam , Eungbin Kim , Hyoungseok Lee; J. Microbiol. 2020;58(12):1010-1017. Published online December 2, 2020; DOI: https://doi.org/10.1007/s12275-020-0490-9

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Abstract PDF

Recent increases in air temperature across the Antarctic Peninsula may prolong the thawing period and directly affect the soil temperature (Ts) and volumetric soil water content (SWC) in maritime tundra. Under an 8°C soil warming scenario, two customized microcosm systems with maritime Antarctic soils were incubated to investigate the differential influence of SWC on the bacterial community and degradation activity of humic substances (HS), the largest constituent of soil organic carbon and a key component of the terrestrial ecosystem. When the microcosm soil (KS1-4Feb) was incubated for 90 days (T = 90) at a constant SWC of ~32%, the initial HS content (167.0 mg/g of dried soil) decreased to 156.0 mg (approximately 6.6% loss, p < 0.05). However, when another microcosm soil (KS1-4Apr) was incubated with SWCs that gradually decreased from 37% to 9% for T = 90, HS degradation was undetected. The low HS degradative activity persisted, even after the SWC was restored to 30% with water supply for an additional T = 30. Overall bacterial community structure remained relatively stable at a constant SWC setting (KS1-4Feb). In contrast, we saw marked shifts in the bacterial community structure with the changing SWC regimen (KS1-4Apr), suggesting that the soil bacterial communities are vulnerable to drying and re-wetting conditions. These microcosm experiments provide new information regarding the effects of constant SWC and higher Ts on bacterial communities for HS degradation in maritime Antarctic tundra soil.

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Bacterial community composition and function in different habitats in Antarctic Fildes region revealed by high-throughput sequencing
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Xinrui Sui, Lingyan Wang, Xinyao Lv, Yanan Liu, Yuqi Zhu, Lingyun Fan, Hanxi Wang
Sustainability.2025; 17(17): 7619. CrossRef
Microbial metabolic responses and CO2 emissions differentiated by soil water content variation in subarctic tundra soils
Dockyu Kim, Namyi Chae, Mincheol Kim, Sungjin Nam, Tai Kyoung Kim, Ki-Tea Park, Bang Yong Lee, Eungbin Kim, Hyoungseok Lee
Journal of Microbiology.2022; 60(12): 1130. CrossRef
Temperature sensitivity of Antarctic soil‐humic substance degradation by cold‐adapted bacteria
Dockyu Kim, Ha Ju Park, Mincheol Kim, Seulah Lee, Soon Gyu Hong, Eungbin Kim, Hyoungseok Lee
Environmental Microbiology.2022; 24(1): 265. CrossRef
Seasonal patterns of rhizosphere microorganisms suggest carbohydrate-degrading and nitrogen-fixing microbes contribute to the attribute of full-year shooting in woody bamboo Cephalostachyum pingbianense
Lushuang Li, Tize Xia, Hanqi Yang
Frontiers in Microbiology.2022;[Epub] CrossRef

Antarctic tundra soil metagenome as useful natural resources of cold-active lignocelluolytic enzymes: Han Na Oh , Doyoung Park , Hoon Je Seong , Dockyu Kim , Woo Jun Sul; J. Microbiol. 2019;57(10):865-873. Published online September 30, 2019; DOI: https://doi.org/10.1007/s12275-019-9217-1

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Abstract PDF

Lignocellulose composed of complex carbohydrates and aromatic heteropolymers is one of the principal materials for the production of renewable biofuels. Lignocellulose-degrading genes from cold-adapted bacteria have a potential to increase the productivity of biological treatment of lignocellulose biomass by providing a broad range of treatment temperatures. Antarctic soil metagenomes allow to access novel genes encoding for the cold-active lignocellulose-degrading enzymes, for biotechnological and industrial applications. Here, we investigated the metagenome targeting cold-adapted microbes in Antarctic organic matter-rich soil (KS 2-1) to mine lignolytic and celluloytic enzymes by performing single molecule, real-time metagenomic (SMRT) sequencing. In the assembled Antarctic metagenomic contigs with relative long reads, we found that 162 (1.42%) of total 11,436 genes were annotated as carbohydrate-active enzymes (CAZy). Actinobacteria, the dominant phylum in this soil’s metagenome, possessed most of candidates of lignocellulose catabolic genes like glycoside hydrolase families (GH13, GH26, and GH5) and auxiliary activity families (AA7 and AA3). The predicted lignocellulose degradation pathways in Antarctic soil metagenome showed synergistic role of various CAZyme harboring bacterial genera including Streptomyces, Streptosporangium, and Amycolatopsis. From phylogenetic relationships with cellular and environmental enzymes, several genes having potential for participating in overall lignocellulose degradation were also found. The results indicated the presence of lignocellulose-degrading bacteria in Antarctic tundra soil and the potential benefits of the lignocelluolytic enzymes as candidates for cold-active enzymes which will be used for the future biofuel-production industry.

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Molecular Characterization of Novel Family IV and VIII Esterases from a Compost Metagenomic Library
Jong-Eun Park, Geum-Seok Jeong, Hyun-Woo Lee, Hoon Kim
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Current Genomics.2020; 21(4): 240. CrossRef

Identification of Proteolytic Bacteria from the Arctic Chukchi Sea Expedition Cruise and Characterization of Cold-active Proteases: Ha Ju Park , Yung Mi Lee , Sunghui Kim , Ah Ram Wi , Se Jong Han , Han-Woo Kim , Il-Chan Kim , Joung Han Yim , Dockyu Kim; J. Microbiol. 2014;52(10):825-833. Published online August 27, 2014; DOI: https://doi.org/10.1007/s12275-014-4226-6

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Abstract PDF

Following collection of seawater samples during an Arctic Chukchi Sea expedition cruise of the Korean icebreaker Araon in 2012, a total of 15,696 bacteria were randomly isolated from Marine Broth 2216 agar plates. Of these, 2,526 (16%) showed proteolytic activity and were identified as mainly Alteromonas (31%), Staphylococcus (27%), and Pseudoalteromonas (14%). Among the proteolytic strains, seven were selected based on their significant ability to grow and produce a halo on skim milk plates at low temperatures (<5°C) owing to cold-active proteases. These strains were affiliated with the genus Pseudoalteromonas and were divided into three groups based on phylogenetic analysis of the 16S rRNA genes. Profiling cell membrane fatty acids confirmed the 16S rRNA-based differentiation and revealed the accordance between the two analyses. Seven genes for serine protease precursors were amplified from the corresponding strains, and based on sequence similarities, these genes were divided into three groups that were identical to those identified by the 16S rRNA phylogenetic analysis. Three protease genes from the representative strains of each group were composed of 2,127–2,130 bp, encoding 708–709 amino acids, and these genes yielded products with calculated molecular weights of approximately 72.3–72.8 kDa. Amino acid sequence analysis suggested that the precursors are members of the subtilase serine endo- and exo-peptidase clan and contain four domains (signal peptide, N-terminal prosequence, catalytic domain, and two pre-peptidase C-terminal domains). Upon expression in E. coli, each recombinant protease exhibited proteolytic activity on zymogram gels.

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Journal of Microbiology.2022; 60(6): 576. CrossRef
Proteases from the marine bacteria in the genus Pseudoalteromonas: diversity, characteristics, ecological roles, and application potentials
Xiu-Lan Chen, Yan Wang, Peng Wang, Yu-Zhong Zhang
Marine Life Science & Technology.2020; 2(4): 309. CrossRef
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Qi Wen, Xian-jie Liu, Wei-cong Zhu, Lu Li, Min-yi Li, Xuna-xian Peng, Hui Li
Journal of Proteomics.2019; 205: 103413. CrossRef
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Current Protein & Peptide Science.2019; 20(4): 334. CrossRef
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The ISME Journal.2018; 12(4): 981. CrossRef

Isolation and Characterization of a Rhodococcus Species Strain Able to Grow on ortho- and para-Xylene: Jung Yeon Jang , Dockyu Kim , Hyun Won Bae , Ki Young Choi , Jong-Chan Chae , Gerben J. Zylstra , Young Min Kim , Eungbin Kim; J. Microbiol. 2005;43(4):325-330.; DOI: https://doi.org/2258 [pii]

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Abstract PDF: Rhodococcus sp. strain YU6 was isolated from soil for the ability to grow on o-xylene as the sole carbon and energy source. Unlike most other o-xylene-degrading bacteria, YU6 is able to grow on p-xylene. Numerous growth substrate range experiments, in addition to the ring-cleavage enzyme assay data, suggest that YU6 initially metabolizes o- and p-xylene by direct aromatic ring oxidation. This leads to the formation of dimethylcatechols, which was further degraded largely through meta-cleavage pathway. The gene encoding meta-cleavage dioxygenase enzyme was PCR cloned from genomic YU6 DNA using previously known gene sequence data from the o-xylene-degrading Rhodococcus sp. strain DK17. Subsequent sequencing of the 918-bp PCR product revealed a 98% identity to the gene, encoding methylcatechol 2,3-dioxygenase from DK17. PFGE analysis followed by Southern hybridization with the catechol 2,3-dioxygenase gene demonstrated that the gene is located on an approximately 560-kb megaplasmid, designated pJYJ1 <br>

Identification of Two-Component Regulatory Genes Involved in o-Xylene Degradation by Rhodococcus sp. Strain DK17: Dockyu Kim , Jong-Chan Chae , Gerben J. Zylstra , Ho-Yong Sohn , Gi-Seok Kwon , Eungbin Kim; J. Microbiol. 2005;43(1):49-53.; DOI: https://doi.org/2138 [pii]

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Abstract PDF: Putative genes for a two-component signal transduction system (akbS and akbT) were detected near the alkylbenzene-degrading operon of Rhodococcus sp. DK17. Sequence analysis indicates that AkbS possesses potential ATP-binding and histidine autophosphorylation sites in the N- and C-terminal regions, respectively, and that AkbT has a typical response regulator domain. Mutant analysis combined with RT-PCR experiments further shows that AkbS is required to induce the expression of o-xylene dioxygenase in DK17.

Molecular Cloning and Identification of a Novel Oxygenase Gene Specifically Induced during the Growth of Rhodococcus sp. Strain T104 on Limonene: Ki Young Choi , Dockyu Kim , Sung-Cheol Koh , Jae-Seong So , Jong-Sul Kim , Eungbin Kim; J. Microbiol. 2004;42(2):160-162.; DOI: https://doi.org/2027 [pii]

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Abstract PDF: Rhodococcus sp. strain T104 is able to utilize both limonene and biphenyl as growth substrates.Furthermore, T104 possesses separate pathways for the degradation of limonene and biphenyl. Previously, we found that a gene(s) involved in limonene degradation was also related to indigo-producing ability. To further corroborate this observation, we have cloned and sequenced a 8,842-bp genomic DNA region with four open reading frames, including one for indole oxygenase, which converts indole to indigo (a blue pigment). The reverse transcription PCR data demonstrated that the identified indole oxygenase gene is specifically induced by limonene, thereby implicating this gene in the degradation of limonene by T104.

Three Separate Pathways for the Initial Oxidation of Limonene, Biphenyl, and Phenol by Rhodococcus sp. Strain T104: Dockyu Kim , Min Jung Park , Sung-Cheol Koh , Jae-Seong So , Eungbin Kim; J. Microbiol. 2002;40(1):86-89.

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Abstract PDF: Rhodococcus sp. strain T104, which is able to grow on either biphenyl or limonene, was found to utilize phenol as sole carbon and energy sources. Furthermore, T104 was positively identified to possess three separate pathways for the degradation of limonene, phenol, and biphenyl. The fact that biphenyl and limonene induced almost the same amount of catechol 1,2-dioxygenase activity indicates that limonene can induce both upper and lower pathways for biphenyl degradation by T104.

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