Detailed identification of desert-originated bacteria carried by Asian dust storms to Japan
By Ngoc-Phuc Hua, F. Kobayashi, Y. Iwasaka, G. Shi, T. Naganuma. 2007
104 citations recorded by the source corpus.
Several halotolerant bacteria were isolated from dust allowed to settle passively on saline medium in Higashi-Hiroshima, Japan during Asia dust events in 2005–2006. The primary identification, based on the sequence similarity of the 16S rRNA gene, revealed that these isolates were strains of Bacillus subtilis, B. licheniformis, Staphylococcus epidermidis, Gracillibacillus sp., and Halomonas venusta. A parallel investigation carried out on desert sand collected directly from sand dunes in Dunhuang, Gobi Desert, China resulted in the revivification of seven bacterial strains that were highly identical to the B. subtilis and B. licheniformis strains obtained in Higashi-Hiroshima (99.7 and 100% of 16S rDNA sequence similarity, respectively). A subsequent genetic analysis on the group of B. licheniformis isolates based on the universally house-keeping genes, gyrB and parE, revealed high sequence similarities in both genes among the strains of both locations (99.0–99.4%), which clustered them in a monophyletic line. Phenotype characterized by numerical taxonomy for 150 physiological tests confirmed the close relatedness between strains (similarity coefficient SSM = 96.0%). The remarkable agreement between phenotype and genotype of the bacterial isolates allows us to conclude that there may have been an aerosolized dispersion of a Gobi Desert B. licheniformis by dust storms to Japan. This study provides evidence of microbial transport by yellow dust events in North-East Asia.
Subfields: Ecology, Health, Toxicology and Mutagenesis, Molecular Biology
View Paper: https://www.semanticscholar.org/paper/ede72e5e65597725cb6aeff0ef4fed7c6f6ca6ca
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Citations in the corpus
- Bacterial abundance and viability in long-range transported dust (2012, methodology): “Although culturable and non-culturable bacterial communities in dust were frequently analyzed (Echigo et al., 2005; Hua et al., 2007; Jeon et al., 2011; Kellogg and Griffin, 2006; Lee et al., 2009; Maki et al., 2010; Perfumo and Marchant, 2010), those investigations did not determine of airborne bac”
- Phylogenetic diversity and vertical distribution of a halobacterial community in the atmosphere of an Asian dust (KOSA) source region, Dunhuang City (2008, background): “Some halobacterial species that were found in both the Gobi Desert and the atmospheric dust impacting Japan had similar genetic identities, thereby supporting the hypothesis of KOSA transport and deposition (Hua et al. 2007).”