Journal of Microbiology

Ki Deok Kim

2 Articles

Microscopical Observation of Inhibition-behaviors against Diaporthe citri by Pre-treated with Pseudomonas putida Strain THJ609-3 on the Leaves of Citrus Plants: Yun Jung Ko , Ju Sung Kim , Ki Deok Kim , Yong Chull Jeun; J. Microbiol. 2014;52(10):879-883. Published online October 1, 2014; DOI: https://doi.org/10.1007/s12275-014-4399-z

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Citrus melanose is one of the most important diseases in orchards cultivating citrus in the world. Although the disease does not cause yield loss, the profitability of the infected fruits is often reduced in the fresh-market, resulting in economic loss. In this study, disease reduction was proven by pre-treatment with Pseudomonas putida strain THJ609-3. In order to illustrate mechanism of the disease reduction by the bacterial strain, the infection behaviors of Diaporthe citri and necrosis deposit of plant tissue were observed using a fluorescence microscope. On the leaves pre-treated with the strain THJ609-3, germination rates of D. citri conidia were significantly decreased compared to those of the untreated control. Scanning electron microscopical observations showed that bacterial cells were attached to the surface of fungal hyphae. Furthermore, morphological change of germ tubes of the conidia was detected. These results suggest that the disease reduction may be caused by the direct antifungal activity of the bacterial strain on the leaf surfaces.

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Zehua Zhou, Sheng Lu, Tiantian Liu, Jie Liu, Jiefu Deng, Xiaopeng Lu, Liangying Dai, Tuyong Yi
Biological Control.2024; 197: 105608. CrossRef
Effective Management of Citrus Melanose Based on Combination of Ecofriendly Chemicals
X. Y. Liu, C. Chaisiri, Y. Lin, Y. P. Fu, W. X. Yin, F. X. Zhu, J. B. Li, B. Xiong, H. Wu, A. Xu, C. X. Luo
Plant Disease.2023; 107(4): 1172. CrossRef
Boron and Zinc Diminish Grey Necrosis Incidence by the Promotion of Desirable Microorganisms on Hazelnut Orchards
Paola Duran, Patricio Javier Barra, María de la Luz Mora, Adriano Nunes-Nesi, Cristian Merino-Gergichevich
Agronomy.2022; 12(4): 868. CrossRef
Diaporthe citri: A Fungal Pathogen Causing Melanose Disease
Chingchai Chaisiri, Xiangyu Liu, Yang Lin, Chaoxi Luo
Plants.2022; 11(12): 1600. CrossRef
Large Scale Cultivation of Bacillus velezensis CE 100 and Effect of Its Culture on Control of Citrus Melanose Caused by Diaporthe citri
Dong Ryul Lee, Chaw Ei Htwe Maung, Tae Gyu Choi, Kil Yong Kim
Korean Journal of Soil Science and Fertilizer.2021; 54(3): 297. CrossRef
Effect of Large-Scale Cultivation of Bacillus amlyoliquefaciens Y1 Using Fertilizer Based Medium for Control of Citrus Melanose Causing Diaporthe citri
Dong-Ryul Lee, Ei Htwe Maung Chaw, Henry Ajuna, Kil-Yong Kim
Korean Journal of Soil Science and Fertilizer.2019; 52(2): 84. CrossRef

The Role as Inoculum Sources of Xanthomonas citri pv. citri Surviving on the Infected Satsuma mandarin Fruits: So Young Kang , Ki Deok Kim , Jeum Kyu Hong , He Nam Hyun , Yong Chull Jeun; J. Microbiol. 2014;52(5):422-426. Published online April 11, 2014; DOI: https://doi.org/10.1007/s12275-014-3366-z

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Abstract PDF

Importing citrus fruits infected by Asiatic citrus canker caused by Xanthomonas citri pv. citri (Xcc) can act as an inoculum source for the disease epidemic in citrus canker-free countries. In this study, the pathogenicity of the causal agent of Asiatic citrus canker surviving on infected Satsuma mandarin fruits was evaluated. The washing solution of infected Satsuma mandarin fruits did not cause lesion formation on the citrus leaves. However, a typical citrus canker lesion was formed on the leaves after inoculation with higher concentrations of the inoculum from the washing solution (washing solu-tion II). It indicated that the pathogenicity of the citrus can-ker surviving on the symptomatic Satsuma mandarin fruits was not changed. Scanning electron microscopic observation showed that the numbers of bacterial cells on the leaves of Satsuma mandarin which inoculated with the washing solu-tion directly (washing solution I) was less compared to those of leaves inoculated with the washing solution II. This result supports that the pathogenicity of Xcc surviving on Satsuma mandarin fruits may not be changed but that the sucessful infection of citrus caker may depend on the concentration of the inoculum.

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Physiological and Molecular Plant Pathology.2027; 147: 103538. CrossRef
Seasonal and post-harvest population dynamics of the Asiatic citrus canker pathogen Xanthomonas citri subsp. citri on grapefruit in Florida
Weiqi Luo, Drew Posny, Alissa B. Kriss, Jim H. Graham, Gavin H. Poole, Earl L. Taylor, Greg McCollum, Tim R. Gottwald, Clive H. Bock
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Effects of Nonionic Surfactants on Xanthan Gum Production: a Survey on Cellular Interactions
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Iranian Journal of Biotechnology.2018; 16(1): 60. CrossRef

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