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Updated: Mar 26, 2026

In Situ Isolation and Culturing of Recalcitrant Soil Bacteria using an Isolation Chip (iChip)
Published on: August 6, 2025
Massilia humi sp. nov. isolated from soil in Incheon, South Korea
1Department of Oriental Medicinal Material & Processing College of Life Science, Kyung Hee University, 1 Seocheon, Kihung Yongin, Kyunggi, 446-701, Republic of Korea.
Abstract:
A Gram-negative, strictly aerobic, non-motile, rod-shaped bacterium, designated THG-S6.8(T), was isolated from soil in Incheon, South Korea. Based on 16S rRNA gene sequence, strain THG-S6.8(T) was moderately related to Massilia plicata 76(T) (97.3 %), Massilia dura 16(T) (97.2 %) and Massilia albidiflava 45(T) (96.9 %). Chemotaxonomic data revealed that strain THG-S6.8(T) possesses ubiquinone-8 as the predominant respiratory quinone, and summed feature 3 (C16:1 ω7c and/or C16:1 ω6c) and C16:0 as the major fatty acids. The major polar lipids were found to be phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. The DNA-DNA relatedness between strain THG-S6.8(T) and Massilia plicata KCTC 12344(T) and Massilia dura KACC 12342(T) was 38.7 and 40.5 %, respectively. The DNA G+C content was 66.8 %. These data, together with phenotypic characterization, suggest the isolate represents a novel species, for which the name Massilia humi sp. nov. is proposed, with THG-S6.8(T) as the type strain (=KCTC 42737(T) = CCTCC AB 2015296(T)).
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