Diversity, antimicrobial activity, and susceptibility of culturable soil actinobacteria isolated from Sichang Island

Phongsopitanun, Wongsakorn; Sripreechasak, Paranee; Sangvichien, Ek; Tanasupawat, Somboon

doi:10.2306/scienceasia1513-1874.2021.088

ScienceAsia

2021

DOI: 10.2306/scienceasia1513-1874.2021.088

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Diversity, antimicrobial activity, and susceptibility of culturable soil actinobacteria isolated from Sichang Island

Wongsakorn Phongsopitanun¹,

Paranee Sripreechasak²,

Ek Sangvichien³

et al.

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Cited by 3 publications

(1 citation statement)

References 26 publications

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“…During actinobacterial screening, strain SC076 T was isolated from soil collected from Sichang Island, Chonburi Province, Thailand [9]. In this study, the polyphasic taxonomy of strain SC076 T , including phylogenetic, chemotaxonomy, phenotypic and genome properties, as well as biological activities, were investigated.…”

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Saccharothrix obliqua sp. nov., isolated from soil of Sichang Island, Thailand

Azad

Chunhacha

Suriyachadkun

et al. 2022

International Journal of Systematic and Evolutionary Microbiology

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During an investigation of rare actinobacteria, isolate SC076T was isolated from a soil sample collected from Sichang Island, Chonburi Province, Thailand. The strain showed the highest 16S rRNA gene similarity to Saccharothrix australiensis DSM 43800T (98.6%) and Saccharothrix espanaensis DSM 44229T (98.6%). The zigzag morphology of the spore chain was observed on the aerial mycelia. meso-Diaminopimelic acid was detected in the peptidoglycan. Whole-cell sugars contained rhamnose, ribose, mannose glucose and galactose. Polar lipids were phosphatidylethanolamine, hydroxyphosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol mannoside, phosphatidylinositol, unidentified ninhydrin-positive glycolipid, unidentified glycolipid and four unidentified lipids. The menaquinones were MK-9(H8), MK-9(H4), MK-9(H2) and MK-9(H0). The predominant fatty acids were iso-C16 : 0, iso-C15 : 0 and anteiso-C17 : 0. The draft genome of SC076T was 8040245 bp with a G+C content of 72.5 mol%. The results of genomic analysis between strain SC076T and the related type strains showed that the digital DNA–DNA hybridization and average nucleotide identity values among the strains were 23.6-32.8% and 77.7–86.8 %, respectively, which are lower than the thresholds used to distinguish strains from others of the same species. Based on the taxonomic evidence, strain SC076T represents a novel species of the genus Saccharothrix for which the name Saccharothrix obliqua sp. nov. is proposed. The type strain is SC076T (=TBRC 14540T=NBRC 115117T).

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mentioning

confidence: 99%

Saccharothrix obliqua sp. nov., isolated from soil of Sichang Island, Thailand

Azad

Chunhacha

Suriyachadkun

et al. 2022

International Journal of Systematic and Evolutionary Microbiology

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A novel actinomycete Streptomyces enissocaesilis exhibiting algicidal activity against the toxic cyanobacterium Phormidium angustissimum

Butsat

Somdee

2023

Environ Sci Pollut Res

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Biodiversity of Actinobacteria Isolated from Marmara and Avşa Islands in Türkiye

TOPKARA,

IŞIK

2023

Black Sea Journal of Engineering and Science

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The main purpose of this study is to investigate the microbial diversity of Actinobacteria, living in soils in the “Marmara” and “Avşa” Islands and to identify species at genus level based on 16S rRNA gene sequences. These islands are located in the southwest of the Sea of Marmara and in the literature review, no Actinobacteria biodiversity studies related to Marmara and Avşa Islands were found. Such unexplored ecological habitats are potentially rich source for discovery sources of novel species and bioactive molecule. Actinobacteria play an important role in many natural phenomena such as nitrogen fixation, roles of these prokaryotic microorganisms. In this article, we focused on the presence and the diversity of Actinobacteria on the Islands by examining multiple sampling sites and using different selective isolation media. A total of 400 culturable Actinobacteria were isolated using ten different isolation media by dilution-plating method. Among the 400 isolates, 112 isolates were selected according to their morphology in different culture media. The isolates were characterized on the basis of 16S ribosomal RNA gene sequencing and phylogenetic analysis. The results showed a high level of actinobacterial diversity with 16 different genera. These genera obtained as a result of phylogenetic analyzes are Streptomyces, Nonomuraea, Nocardia, Actinomadura, Micromonospora, Kribbella, Mycolicibacterium, Microbispora, Saccharopolyspora, Jiangella, Rhodococcus, Actinopolymorpha, Geodermatophilus, Dactylosporangium, Pseudonocardia and Nocardioides. Many isolates are identified as new species by our current research. Findings from this study showed that the soil of Marmara and Avşa Islands can be a good source of isolation for Actinobacteria.

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Diversity, antimicrobial activity, and susceptibility of culturable soil actinobacteria isolated from Sichang Island

Cited by 3 publications

References 26 publications

Saccharothrix obliqua sp. nov., isolated from soil of Sichang Island, Thailand

Saccharothrix obliqua sp. nov., isolated from soil of Sichang Island, Thailand

A novel actinomycete Streptomyces enissocaesilis exhibiting algicidal activity against the toxic cyanobacterium Phormidium angustissimum

Biodiversity of Actinobacteria Isolated from Marmara and Avşa Islands in Türkiye

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