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- Diversity and Dynamics of Marine Arenicolous Fungi in Three Seasides of the Korean Peninsula
- Jun Won Lee , Chang Wan Seo , Wonjun Lee , Ji Seon Kim , Ki Hyeong Park , Yoonhee Cho , Young Woon Lim
- J. Microbiol. 2023;61(1):63-82. Published online January 30, 2023
- DOI: https://doi.org/10.1007/s12275-023-00011-1
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- 3 Citations
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Abstract
- Various arenicolous fungal species have been detected from the beach sand in the coastal area. However, little has been revealed regarding their distribution and dynamics. To investigate the overall diversity of marine arenicolous fungi (MAFs) in Korea and whether the composition of MAFs is affected by ocean currents, we isolated and analyzed the fungal community from the western, southern, and eastern seasides of the Korean Peninsula. In total, 603 strains were isolated and identified as 259 species based on appropriate molecular markers for each genus (ITS, BenA, CaM, tef1, and act). The composition of MAFs showed differences among the seasides. Our results indicate that many MAFs inhabit the beach sand on the Korean Peninsula, and the composition of MAFs is also affected by ocean currents flowing along each coast.
- Comparative portrayal of ocular surface microbe with and without dry eye
- ZhenHao Li , Yufang Gong , ShuZe Chen , SiQi Li , Yu Zhang , HuiMin Zhong , ZhouCheng Wang , YiFan Chen , QiXin Deng , YuTing Jiang , LiYing Li , Min Fu , GuoGuo Yi
- J. Microbiol. 2019;57(11):1025-1032. Published online August 28, 2019
- DOI: https://doi.org/10.1007/s12275-019-9127-2
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- 63 Citations
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Abstract
- To compare the ocular surface (OS) microbial communities and diversity between dry eye (DE) and non-DE (NDE). Furthermore, we compared meibomian gland dysfunction (MGD) and non-MGD (NMGD) among DE subjects. The V3-V4 region of 16S rRNA gene high-throughput sequencing was performed in the conjunctival swab samples to investigate the composition of the OS bacterial community in DE (n=35) and NDE (n=54) and compared the composition of MGD (n=25) and NMGD (n=10) among DE subjects. Deep sequencing of OS 16S rDNA from DE (n=35) and NDE (n=54) demonstrated great a difference in alpha and beta diversity between the OS bacterial flora (P < 0.05). The similar OS microbial structures were shown at the phylum and genus levels by bioinformatics analysis between them, and in LEfSe (linear discriminant analysis effect size) analysis, Bacteroidia and Bacteroidetes were enriched in DE, while Pseudomonas was plentiful in NDE (linear discriminant analysis [LDA] > 4.0). Among the DE group, there was no significant difference in α and β diversity between MGD and NMGD (P > 0.05). Surprisingly, Bacilli was the dominant microbe in MGD, and Bacteroidetes was the superior bacteria in NMGD among DE subjects (LDA > 4.0). Different diversity of OS bacteria composition between DE and NDE and the altered diversity of OS bacteria may play an important role in DE. Moreover, the lower dominance of OS bacteria in DE may be associated with the occurrence and development of DE. Although there was no significant difference in alpha and beta analysis, the OS dominant microbe between MGD and NMGD among DE was different.
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