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Park Sihyun,Lee GyuDae,Kim Ikwhan,Jeong Yeongyu,Shin Jae-Ho 한국미생물·생명공학회 2023 한국미생물·생명공학회지 Vol.51 No.3
This research presents the whole-genome sequence of Enterobacter asburiae strain IK3, which was isolated from the rhizosphere soil of soybean (Glycine max). The genome of the strain is composed of a single chromosome with 4 plasmids, total size of 5,084,040 bp, and the GC content is 55.5%.
Jung Da-Ryung,Lee GyuDae,Lim Kyeongmo,Lee Yeonkyeong,Nam Ga-Yeon,Won Do-Yeun,Park Na-Yun,Seo Young-Jin,Shin Jae-Ho 한국미생물·생명공학회 2023 한국미생물·생명공학회지 Vol.51 No.4
We report the draft genome sequence of Bacillus thuringiensis serovar aizawai AS23, an insecticidal strain targeting lepidopteran pests, which was isolated from the rhizosphere of Korean melon (Cucumis melo L.). The genome of strain AS23 comprising 6,846,584 bp with a G + C content of 34.83% was assembled to 11 contigs obtained using hybrid assembly. Additionally, we mined the genome for pesticidal genes, identifying several insecticidal genes, including Cry1Aa3, Cry1Ca9, Cry1Da2, Cry1Ia44, Cry2Ab41, Cry9Ea9, Spp1Aa1, and Vip3Aa86.
Jung Da-Ryung,Lee GyuDae,Bashizi Tino,Shin Jae-Ho 한국미생물·생명공학회 2023 한국미생물·생명공학회지 Vol.51 No.4
This study presents the complete genome sequence of Cytobacillus firmus strain T8, which was obtained from the rhizosphere soil of pepper (Capsicum annuum L.). The genome of the strain consists of a single chromosome with a total size of 4,383,751 bp and the GC content of 42%.
Biocontrol of Peach Gummosis by Bacillus velezensis KTA01 and Its Antifungal Mechanism
Tae-An Kang,GyuDae Lee,Kihwan Kim,Dongyup Hahn,Jae-Ho Shin,Won-Chan Kim The Korean Society for Microbiology and Biotechnol 2024 Journal of microbiology and biotechnology Vol.34 No.2
Peach tree gummosis is a botanical anomaly distinguished by the secretion of dark-brown gum from the shoots of peach trees, and Botryosphaeria dothidea has been identified as one of the fungal species responsible for its occurrence. In South Korea, approximately 80% of gummosis cases are linked to infections caused by B. dothidea. In this study, we isolated microbes from the soil surrounding peach trees exhibiting antifungal activity against B. dothidea. Subsequently, we identified several bacterial strains as potential candidates for a biocontrol agent. Among them, Bacillus velezensis KTA01 displayed the most robust antifungal activity and was therefore selected for further analysis. To investigate the antifungal mechanism of B. velezensis KTA01, we performed tests to assess cell wall degradation and siderophore production. Additionally, we conducted reverse transcription-quantitative polymerase chain reaction (RT-qPCR) analysis based on whole-genome sequencing to confirm the presence of genes responsible for the biosynthesis of lipopeptide compounds, a well-known characteristic of Bacillus spp., and to compare gene expression levels. Moreover, we extracted lipopeptide compounds using methanol and subjected them to both antifungal activity testing and high-performance liquid chromatography (HPLC) analysis. The experimental findings presented in this study unequivocally demonstrate the promising potential of B. velezensis KTA01 as a biocontrol agent against B. dothidea KACC45481, the pathogen responsible for causing peach tree gummosis.
Sliti Amani,Kim Min-Ji,Lee GyuDae,Park Yeong-Jun,Shin Jae-Ho 한국미생물·생명공학회 2023 한국미생물·생명공학회지 Vol.51 No.3
We present the complete genome sequence of Priestia aryabhattai strain S2 isolated from the soybean rhizosphere. The genome consists of a single circular chromosome of 5,070,860 bp with a G+C content of 38.3% and 2 plasmids, P1(148,124 bp, GC content 33.3%) and P2 (76,418 bp, GC content 36.5%).