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Kingkaew E, Nuhwa R, Piluk J, Thitiprasert S, Thongchul N, Tanasupawat S. Terrilactibacillus tamarindi sp. nov., isolated from bark of Tamarindus indica. Int J Syst Evol Microbiol 2020; 70:4145-4150. [PMID: 32519940 DOI: 10.1099/ijsem.0.004261] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-positive, catalase-positive, facultatively anaerobic, terminal-spore-forming rod, designated strain BCM23-1T, was isolated from bark of Tamarindus indica collected from Chiang Mai Province, Thailand. This strain produced d-lactic acid from glucose. It grew at 20-45 °C (optimum, 30 °C), pH 3.5-9 (optimum, pH 7.0) and in the presence of 1-4 % (w/v) NaCl. The cell-wall peptidoglycan contained meso-diaminopimelic acid (A1γ). The major isoprenoid quinone was menaquinone 7 (MK-7). Polar lipids analysis revealed the presence of diphosphatidylglycerol, phosphatidylglycerol, an unidentified aminophospholipid, an unidentified phospholipid and an unidentified lipid. The predominant cellular fatty acids were anteiso-C17 : 0, anteiso-C15:0, and iso-C16 : 0 when cultivated on GYP agar plates. The 16S rRNA gene sequence similarity between strain BCM23-1T and Terrilactibacillus laevilacticus NK26-11T was 98.3 %. The draft genome of BCM23-1T was 3.24 Mb in size and contained 3088 coding sequences with an in silico DNA G+C content of 37.1 mol%. The values of ANIb, ANIm and digital DNA-DNA hybridization between strain BCM23-1T and T. laevilacticus NK26-11T were 89.9, 90.8 and 40.4 %, respectively. The results of phenotypic and chemotaxonomic, 16S rRNA gene sequence similarity, and whole genome analyses support strain BCM23-1T as representing a novel species of Terrilactibacillus for which the name Terrilactibacillus tamarindi sp. nov. is proposed. The type strain is BCM23-1T (=LMG 31662T=JCM 33748T=TISTR 2841T).
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Klykleung N, Yuki M, Kudo T, Ohkuma M, Phongsopitanun W, Inahashi Y, Matsumoto A, Tanasupawat S. Streptomyces mimosae sp. nov., an endophytic actinomycete isolated from the root of Mimosa pudica in Thailand. Int J Syst Evol Microbiol 2020; 70:3316-3322. [DOI: 10.1099/ijsem.0.004170] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An endophytic actinomycete, strain 3MP-10T, isolated from the root of Mimosa pudica was taxonomically studied based upon polyphasic approaches. This strain formed spiral spore chains on aerial mycelia. ll-Diaminopimelic acid, glucose and ribose were found in the whole-cell hydrolysates. It belonged to the genus
Streptomyces
and was closely related to
Streptomyces zhaozhouensis
DSM 42101T (98.9 %) and
Streptomyces sedi
JCM 16909T (98.6 %) based on 16S rRNA gene sequence analysis results. The major menaquinones were MK-10(H8), MK-10(H6) and MK-9(H8). The predominant cellular fatty acids were iso-C16 : 0, anteiso-C15 : 0 and anteiso-C17 : 0. The detected phospholipids were diphosphatidylglycerol, phosphatidylinositol mannoside, phosphatidylinositol, phosphatidylethanolamine and phosphatidylglycerol. Strain 3MP-10T had a genome size of 7.2 Mb with a genome G+C content of 73.4 mol%. Results of in silico genome-based similarity analysis revealed ANIb values of 84.94 and 84.77 %, ANIm values of 88.01 and 87.92 %, and dDDH values of 29.9 and 29.6 % when compared with
S. zhaozhouensis
DSM 42101T and
S. sedi
JCM 16909T, respectively. Based on the polyphasic approach, digital DNA–DNA relatedness and average nucleotide identity, we propose that the novel actinomycete represents a novel species, Streptomyces mimosae, with type strain 3MP-10T (=JCM 33328T=TISTR 2646T).
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Kuncharoen N, Techo S, Savarajara A, Tanasupawat S. Identification and lipolytic activity of yeasts isolated from foods and wastes. Mycology 2020; 11:279-286. [PMID: 33329923 PMCID: PMC7723016 DOI: 10.1080/21501203.2020.1745922] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Thirty-three yeasts were isolated from palm oil industrial wastes and traditional fermented foods in Thailand. Based on the analysis of the sequences of the D1/D2 region of the large subunit ribosomal RNA gene (LSU rDNA) and their phenotypic characteristics, they were identified as Pichia kudriavzevii (11 isolates), Candida ethanolica (1 isolate), Clavispora lusitaniae (2 isolates), Ogataea polymorpha (1 isolate), Hanseniaspora opuntiae (1 isolate), Lodderomyces elongisporus (1 isolate), Saccharomyces cerevisiae (2 isolates), C. tropicalis (5 isolates), Yarrowia lipolytica (2 isolates), Magnusiomyces ingens (1 isolate), and Magnusiomyces capitatus (3 isolates), Trichosporon insectorum (1 isolate), and Trichosporon asteroides (2 isolates). Seven strains, T. insectorum 4E-1D, M. capitatus 5E-1T and 5E-2D, T. asteroides 8E-1T and 8E-1D, and Y. lipolytica Fy-12 and Fy-13, showed high lipolytic activity ranged from 5.21 ± 0.09 to 45.68 ± 2.37 U/mL. Moreover, these seven strains exhibited good lipolytic activity after culturing in the medium containing palm oil (11.79 ± 0.67 to 28.19 ± 4.84 U/mL) and soy oil (9.14 ± 1.08 to 22.97 ± 0.69 U/mL) as lipase inducers. The result of this study suggests that the palm oil industrial wastes and Thai fermented foods could be promised as the invaluable sources of lipolytic yeasts.
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Nantapong N, Matsutani M, Kanchanasin P, Kataoka N, Paisrisan P, Matsushita K, Tanasupawat S. Corynebacterium suranareeae sp. nov., a glutamate producing bacterium isolated from soil and its complete genome-based analysis. Int J Syst Evol Microbiol 2020; 70:1903-1911. [DOI: 10.1099/ijsem.0.003993] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Strain N24T was isolated from soil contaminated with starling’s feces collected from Roi-Et province, Thailand. Cells of N24T were Gram-stain-positive rods, aerobic and non-spore-forming. N24T was positive for catalase, urease, citrate utilization, nitrate reduction and Methyl Red (MR) test but negative for oxidase, casein, gelatin liquefaction, tyrosine, Voges–Proskauer (VP) reaction and starch hydrolysis. Meso-diaminopimelic acid, rhamnose, ribose, arabinose and galactose were detected in its whole-cell hydrolysates. The results of the 16S rRNA gene sequence analysis indicated that N24T represented a member of the genus
Corynebacterium
. N24T was closely related to
Corynebacterium glutamicum
ATCC 13032T, with 99.0 % 16S rRNA gene sequence similarity. According to results obtained using in silico DNA–DNA hybridization approaches, N24T showed highest DNA–DNA relatedness (27.6 %) and average nucleotide identity (84.1 %) to
Corynebacterium glutamicum
ATCC 13032T. The DNA G+C content of N24T was 51.8 mol% (genome based). The major cellular fatty acids of N24T were C16 : 0, and C18 : 1ω9c. N24T had the nine isoprenes unit, MK-9(H2) as the predominant menaquinone. The predominant polar lipids were phosphatidylglycerol, phosphatidylinositol and diphosphatidylglycerol. Mycolic acids were also present. According to the complete genome sequence data, strain N24T and
C. glutamicum
ATCC 13032T are close phylogenetic neighbours, but have different genome characteristics. On the basis of the results of the genotypic and genomic studies and phenotypic characteristics including chemotaxonomy, strain N24T should be classified as representing a novel species of the genus
Corynebacterium
, for which the name Corynebacterium suranareeae sp. nov. is proposed. The type strain is N24T (TBRC 5845T=NBRC 113465T).
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Klykleung N, Yuki M, Kudo T, Ohkuma M, Phongsopitanun W, Pittayakhajonwut P, Tanasupawat S. Microbispora catharanthi sp. nov., a novel endophytic actinomycete isolated from the root of Catharanthus roseus. Int J Syst Evol Microbiol 2020; 70:964-970. [DOI: 10.1099/ijsem.0.003858] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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81
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Phuengjayaem S, Tanasupawat S, Teeradakorn S. Characterization of a novel Clostridium sp. SP17–B1 and its application for succinic acid production from hevea wood waste hydrolysate. Anaerobe 2020; 61:102096. [DOI: 10.1016/j.anaerobe.2019.102096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/19/2019] [Accepted: 09/02/2019] [Indexed: 10/26/2022]
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82
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Phongsopitanun W, Sripreechasak P, Rueangsawang K, Panyawut R, Pittayakhajonwut P, Tanasupawat S. Diversity and antimicrobial activity of culturable endophytic actinobacteria associated with Acanthaceae plants. SCIENCEASIA 2020. [DOI: 10.2306/scienceasia1513-1874.2020.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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83
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Tamiyakul H, Roytrakul S, Jaresitthikunchai J, Phaonakrop N, Tanasupawat S, Warisnoicharoen W. Changes in protein patterns of Staphylococcus aureus and Escherichia coli by silver nanoparticles capped with poly (4-styrenesulfonic acid-co-maleic acid) polymer. ASIAN BIOMED 2019. [DOI: 10.1515/abm-2019-0039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Background
While silver nanoparticles (AgNPs) are increasingly attractive as an antibacterial agent in many applications, the effect of AgNPs on bacterial protein profiles, especially AgNPs stabilized by polymeric molecules, is not well understood.
Objectives
To investigate the changes in bacterial protein patterns by AgNPs capped with poly (4-styrenesulfonic acid-co-maleic acid) (AgNPs-PSSMA) polymer toward Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 25922.
Methods
The growth of bacteria after incubated with AgNPs-PSSMA for different time intervals was determined by optical density at 600 nm. Their protein patterns were observed using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), and the proteomic analysis of extracted proteins was determined by liquid chromatography-tandem mass spectrometry (LC–MS/MS).
Results
AgNPs-PSSMA was able to inhibit the growth of both S. aureus and E. coli cells. The treated bacterial cells expressed more proteins than the untreated cells as seen from SDS-PAGE study. Nanosilver (NS) caused the upregulation of metabolic gene, waaA, in S. aureus cells. For E. coli cells, the upregulated proteins were metabolic genes (srlB, fliE, murD) and other genes dealt with DNA replication (dinG), DNA–RNA transcription (yrdD), RNA– protein translation (rplD), molecular transport (sapF), and signal transduction (tdcF).
Conclusions
The antibacterial effect of AgNPs-PSSMA may arise by changing the bacterial proteins and thus interfering with the normal cell function.
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84
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Booncharoen A, Visessanguan W, Kuncharoen N, Yiamsombut S, Santiyanont P, Mhuantong W, Charoensri S, Rojsitthisak P, Tanasupawat S. Lentibacillus lipolyticus sp. nov., a moderately halophilic bacterium isolated from shrimp paste ( Ka-pi). Int J Syst Evol Microbiol 2019; 69:3529-3536. [PMID: 31424384 DOI: 10.1099/ijsem.0.003658] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-positive, aerobic, spore-forming, moderately halophilic bacterium, SSKP1-9T, was isolated from traditional salted shrimp paste (Ka-pi) produced in Samut Sakhon Province, Thailand. This strain grew optimally at 37-40 °C, pH 7.0 and in the presence of 8-16 % (w/v) NaCl. The 16S rRNA gene sequence similarity values between strain SSKP1-9T and Lentibacillus juripiscarius TISTR 1535T and Lentibacillus halophilus TISTR 1549T were 98.7 and 97.2 %, respectively. Based on 16S rRNA gene sequence similarity, strain SSKP1-9T represents a distinct novel species, as shown by phenotypic traits, DNA-DNA hybridization and average nucleotide identity values. In addition, the whole-cell protein profile confirmed the novelty of the taxon. The genomic DNA G+C content was 44.6 mol%. The major isoprenoid quinone was MK-7. The cell-wall peptidoglycan contained meso-diaminopimelic acid. Polar lipid analysis revealed the presence of phosphatidylglycerol, diphosphatidylglycerol, four unidentified lipids, an unidentified phospholipid and an unidentified glycolipid. The major cellular fatty acids were anteiso-C15 : 0, anteiso-C17 : 0 and iso-C16 : 0. The results of phenotypic and chemotaxonomic characteristics and whole-genome analysis support that strain SSKP1-9T represents a novel species of Lentibacillus, for which the name Lentibacilluslipolyticus sp. nov. is proposed. The type strain is SSKP1-9T (=JCM 32625T=TISTR 2597T).
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85
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Kuncharoen N, Kudo T, Yuki M, Okuma M, Booncharoen A, Tanasupawat S. Micromonospora musae sp. nov., an endophytic actinomycete isolated from roots of Musa species. Syst Appl Microbiol 2019; 42:126020. [DOI: 10.1016/j.syapm.2019.126020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 08/06/2019] [Accepted: 08/20/2019] [Indexed: 10/25/2022]
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86
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Kanchanasin P, Yuki M, Kudo T, Ohkuma M, Kuncharoen N, Phongsopitanun W, Tanasupawat S. Streptomyces bauhiniae sp. nov., isolated from tree bark of Bauhinia variegata Linn. in Thailand. Int J Syst Evol Microbiol 2019; 70:228-233. [PMID: 31592758 DOI: 10.1099/ijsem.0.003743] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel actinomycete strain, Bv016T, belonging to the genus Streptomyces, was isolated from the bark of tree, Bauhinia variegata Linn., collected in Thailand. The taxonomic position of the strain was characterized by using a polyphasic approach. ll-Diaminopimelic acid, glucose, mannose, ribose and galactose were detected in its whole-cell hydrolysates. The N-acyl type of muramic acid was acetyl. The strain contained anteiso-C15 : 0, iso-C16 : 0, iso-C15 : 0 and iso-C14 : 0 as the major fatty acids and MK-9(H8), MK-9(H6) and MK-9(H4) as the major menaquinones. The major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol and phosphatidylinositol mannoside. The strain was closely related to Streptomyces griseoluteus JCM 4041T (98.4 %), Streptomyces seoulensis JCM 10116T (98.4 %) and Streptomyces recifensis JCM 4408T (98.2 %). The draft genome of Bv016T was 6.74 Mb with 5949 coding sequences with an average G+C content of 71.7 mol%. The ANIb and ANIm values of strain Bv016T were 94.1 and 95.2 %, respectively, and the digital DNA-DNA hybridization value was 60.6 % in comparison with the draft genome of S. griseoluteus JCM 4765T. The results of the taxonomic analysis suggested that strain Bv016T represented a novel species of the genus Streptomyces for which the name Streptomyces bauhiniae sp. nov. is proposed. The type strain is Bv016T (=JCM 33208T=TISTR 2645T).
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87
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Kunthiphun S, Wattanagonniyom T, Endoh R, Takashima M, Ohkuma M, Tanasupawat S, Savarajara A. Heterocephalacria mucosa sp. nov., a new basidiomycetous yeast species isolated from a mangrove forest in Thailand. Int J Syst Evol Microbiol 2019; 69:2823-2827. [DOI: 10.1099/ijsem.0.003562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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88
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Klykleung N, Yuki M, Kudo T, Ohkuma M, Phongsopitanun W, Pittayakhajonwut P, Tanasupawat S. Nonomuraea phyllanthi sp. nov., an endophytic actinomycete isolated from the leaf of Phyllanthus amarus. Arch Microbiol 2019; 202:55-61. [PMID: 31463600 DOI: 10.1007/s00203-019-01717-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 07/31/2019] [Accepted: 08/18/2019] [Indexed: 12/01/2022]
Abstract
A novel actinomycete, strain PA1-10T, isolated from the leaf of Phyllanthus amarus collected from Bangkok, Thailand, was characterized taxonomically using a polyphasic approach. This strain contained the characteristics consistent with those of members of the genus Nonomuraea. It formed short rugose spore chain on aerial mycelium. The diamino acid in cell wall peptidoglycan was meso-diaminopimelic acid. Galactose, glucose, madurose, mannose, and ribose were found in whole-cell hydrolysates. Predominant menaquinones were MK-9 (H2), MK-9 (H4), and MK-9 (H6). Major cellular fatty acids were iso-C16:0 and C17:0 10-methyl. Phospholipid profiles were composed of phosphatidylinositol mannoside (PIM), lyso-phosphatidylethanolamine (lyso-PE), phosphatidylethanolamine (PE), methylphosphatidylethanolamine (PME), diphosphatidylglycerol (DPG), and phosphatidylglycerol (PG). The G + C content of DNA was 71.2 mol%. Strain PA1-10T showed the highest 16S rRNA gene sequence similarity with Nonomuraea candida JCM 15928T (98.35%) and shared the same node with Nonomuraea maritima JCM 18321T in the phylogenetic tree analysis. Based on the phenotypic characteristics, DNA-DNA relatedness, and average nucleotide identity (ANI), the strain is considered to represent a novel species of the genus Nonomuraea, for which the name Nonomuraea phyllanthi is proposed. The type strain is PA1-10T (= JCM 33073T = NBRC 112774T = TISTR 2497T).
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Kuncharoen N, Fukasawa W, Mori M, Shiomi K, Tanasupawat S. Diversity and Antimicrobial Activity of Endophytic Actinomycetes Isolated from Plant Roots in Thailand. Microbiology (Reading) 2019. [DOI: 10.1134/s0026261719040088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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90
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Kuncharoen N, Kudo T, Yuki M, Okuma M, Pittayakhajonwut P, Tanasupawat S. Micromonospora radicis sp. nov., isolated from roots of Azadirachta indica var. siamensis Valenton, and reclassification of Jishengella zingiberis as Micromonospora zingiberis comb. nov. Int J Syst Evol Microbiol 2019; 69:2884-2891. [PMID: 31310194 DOI: 10.1099/ijsem.0.003574] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel endophytic actinomycete strain AZ1-13T was isolated from roots of Azadirachta indica, and its taxonomic position was investigated using a polyphasic approach. Pairwise 16S rRNA gene sequence similarities of strain AZ1-13T and its closest species, Jishegella zingiberis PLAI1-1T and Micromonospora endophytica 202201T, were 99.7 and 99.2 %, respectively. Phylogenetic analyses of the family Micromonosporaceae based on 16S rRNA gene sequences indicated strains AZ1-13T and J. zingiberis PLAI1-1Tare located within the genus Micromonospora. The approximate genome size of the strain was 5.96 Mb with 71.9 mol% of G+C content. The strain AZ1-13T exhibited ANIb values of 87.4 % with J. zingiberis PLAI1-1T and 85.1 % with M. endophytica 202201T. Chemotaxonomic characteristics of strain AZ1-13T were consistent within the genus Micromonospora: cell-wall peptidoglycan of the strain contained meso-diaminopimelic acid; glucose, mannose, ribose and xylose are presented as the whole-cell sugars; the predominant menaquinones were MK-9(H4) and MK-9(H6); major cellular fatty acids were iso-C15 : 0, 10-methyl C17 : 0, C17 : 0, anteiso-C17 : 0 and iso-C17 : 1ω8c; diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylinositol were detected as distinguished phospholipids. Based on phenotypic properties, phylogeny and genomic data, the strain AZ1-13T could be distinguished from its closest neighbours, representing a novel species of the genus Micromonospora, for which the name Micromonospora radicis sp. nov. is proposed. The type strain is AZ1-13T (=KCTC 39786T=NBRC 112324T=JCM 32147T = TISTR 2404T). This study also proposed that J. zingiberisis transferred to the genus Micromonospora as Micromonospora zingiberis comb. nov. (type strain PLAI1-1T=TBRC 7644T=NBRC 113144T=JCM 32592T).
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91
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Hoondee P, Wattanagonniyom T, Weeraphan T, Tanasupawat S, Savarajara A. Occurrence of oleaginous yeast from mangrove forest in Thailand. World J Microbiol Biotechnol 2019; 35:108. [DOI: 10.1007/s11274-019-2680-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Accepted: 06/20/2019] [Indexed: 11/25/2022]
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92
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Techo S, Shiwa Y, Tanaka N, Fujita N, Miyashita M, Shibata C, Booncharoen A, Tanasupawat S. Enterococcus florum sp. nov., isolated from a cotton flower (Gossypium hirsutum L.). Int J Syst Evol Microbiol 2019; 69:2506-2513. [PMID: 31204971 DOI: 10.1099/ijsem.0.003524] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-positive and catalase negative coccus, designated strain Gos25-1T, isolated from a cotton flower (Gossypium hirsutum L.) collected from Khao Wong district, Kalasin province, Thailand. The taxonomic position of this strain was systematically studied based upon polyphasic taxonomic methods. The strain was facultatively anaerobic and produced l-lactic acid from glucose. The predominant cellular fatty acids were the straight-chain fatty acids C18 : 1ω9c and C16 : 0. According to 16S rRNA and phenylalanyl-tRNA synthase alpha subunit (pheS) gene sequence similarity, this strain was closely related to Enterococcus pallens NBRC 100697T, E. hermanniensis CIP 108559T, E. avium NBRC 100477T and E. raffinosus NBRC 100492T with 98.9-99.1 % and 77.0-82.0 % sequence similarities, respectively. Phylogenetic analysis indicated that strain Gos25-1T was clearly distinguished from closely related species of the genus Enterococcus. Draft genome of Gos25-1T had a size of 3.99 Mb which was contained 3788 coding sequences with in silico G+C content of 42.4 mol%. The ANIb and a digital DNA-DNA hybridisation (dDDH) values between strain Gos25-1T and the closest related species, E. pallens NBRC 100697T were 73.65 and 21.10 %, respectively. According to polyphasic characterisation, this strain represents a novel species of the genus Enterococcus, for which the name Enterococcus florum sp. nov. is proposed. The type strain is Gos25-1T (=CIP 110956T=LMG 29007T=NBRC 111461T=TISTR 2382T).
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Chantarawong W, Kuncharoen N, Tanasupawat S, Chanvorachote P. Lumichrome Inhibits Human Lung Cancer Cell Growth and Induces Apoptosis via a p53-Dependent Mechanism. Nutr Cancer 2019; 71:1390-1402. [PMID: 31074646 DOI: 10.1080/01635581.2019.1610183] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Lumichrome, a major derivative of riboflavin, may exhibit pharmacological activity against cancer cells. Riboflavin is a vitamin found in food, however, certain evidence has suggested its possible potentiating effects on cancer progression. Here, we have shown for the first time that unlike riboflavin, lumichrome can suppress lung cancer cell growth and reduce survival in both normal and anchorage-independent conditions. In addition, lumichrome induced apoptosis in lung cancer cells via a p53-dependent mitochondrial mechanism with substantial selectivity, shown by its lesser toxicity to the normal primary dermal papilla cells. The potency of lumichrome in killing lung cancer cells was found to be comparable to that of cisplatin, a standard chemotherapeutic drug for lung cancer treatment. With regard to the mechanism, lumichrome significantly upregulated p53 and decreased its downstream target BCL-2. Such a shift of BCL-2 family protein balance further activated caspase-9 and -3 and finally executed apoptosis. Furthermore, lumichrome potentially suppressed cancer stem cells (CSCs) in lung cancer by dramatically suppressing CSC markers together with the CSC-maintaining cell signaling namely protein kinase B (AKT) and β-catenin. To conclude, the present study has unraveled a novel role and mechanism of lumichrome against lung cancer that may benefit the development of the compound for management of the disease.
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94
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Kunthiphun S, Endoh R, Takashima M, Ohkuma M, Tanasupawat S, Savarajara A. Prototheca paracutis sp. nov., a novel oleaginous achlorophyllous microalga isolated from a mangrove forest. MYCOSCIENCE 2019. [DOI: 10.1016/j.myc.2019.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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95
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Thawai C, Tanasupawat S, Kudo T. Micromonospora caldifontis sp. nov., isolated from hot spring soil. Int J Syst Evol Microbiol 2019; 69:1336-1342. [PMID: 30810517 DOI: 10.1099/ijsem.0.003321] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A single spore forming actinomycete, designated strain HSS6-8T, was isolated from a sample of hot spring soil. The strain had the chemotaxonomic properties consistent with its classification in the genus Micromonospora. The strain was found to have meso-diaminopimelic acid in the cell-wall peptidoglycan. The acyl type of the cell-wall muramic acid was glycolyl. The reducing sugars in the cell hydrolysates were glucose, arabinose, xylose, ribose, mannose, galactose and rhamnose. The phospholipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol and phosphoglycolipid. The major menaquinones were MK-10(H6) and MK-10(H4). The major cellular fatty acids were iso-C16 : 0, anteiso-C17 : 0, C17 : 0 and anteiso-C15 : 0. The G+C content of the genomic DNA was 70.5 mol%. 16S rRNA gene sequence analysis revealed that strain HSS6-8T was closely related to Micromonospora nigra DSM 43818T (98.2 %), Micromonospora eburnea DSM 44814T (98.2 %) and Micromonospora spongicola S3-1T (98.1 %). The physiological and DNA-DNA hybridization data allowed the differentiation of strain HSS6-8T from its related species. Thus, the strain represents a novel species of the genus Micromonospora, for which the name Micromonospora caldifontis sp. nov. is proposed. The type strain is HSS6-8T (=TBRC 8927T=JCM 17126T).
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Daroonpunt R, Yiamsombut S, Sitdhipol J, Tanasupawat S. Bacillus salacetis sp. nov., a slightly halophilic bacterium from Thai shrimp paste (Ka-pi). Int J Syst Evol Microbiol 2019; 69:1162-1168. [PMID: 30767851 DOI: 10.1099/ijsem.0.003286] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-positive, slightly halophilic, endospore-forming, strictly aerobic, rod-shaped bacterium, designated SKP7-4T, was isolated from shrimp paste collected from Samut Sakhon province, Thailand. Strain SKP7-4T grew at pH 6.0-9.0 (optimum, 7.5), at 20-40 °C (37 °C) and in 0-15 % (w/v) NaCl (1-3 %). The diamino acid found in the cell-wall peptidoglycan was meso-diaminopimelic acid. Menaquinone with seven isoprene units was the major isoprenoid quinone. Diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and three unidentified phospholipids were detected as polar lipids. It contained iso-C15 : 0 and anteiso-C15 : 0 as major cellular fatty acids. On the basis of 16S rRNA gene sequence analysis, strain SKP7-4T belonged to the genus Bacillus and was closely related to Bacillus vietnamensis JCM 11124T, Bacillus marisflavi JCM 11544T, Bacillus aquimaris JCM 11545T and Bacillusoryzaecorticis JCM 19602T, with 98.7, 97.9, 97.8 and 97.8 % similarity, respectively. The draft genome of SKP7-4T was 4.68 Mb with 5208 coding sequences with an average G+C content of 43.2 mol%. The ANIb and ANIm values of strain SKP7-4T were 70.0 and 84.3 %, respectively, and the digital DNA-DNA hybridization value was 20 % in comparison with the draft genome of B. vietnamensis JCM 11124T. On the basis of the results of phenotypic, chemotaxonomic and phylogenetic analyses, the strain should represent a novel species of the genus Bacillus and the name Bacillus salacetis sp. nov. is proposed. The type strain is SKP7-4T (=JCM 33205T=KCTC 43014T=TISTR 2596T).
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Phomikhet P, Lorliam W, Thaniyavarn S, Tanasupawat S, Savarajara A. Supplementation of sugarcane molasses for maximization of ethanol production by Saccharomyces cerevisiae using response surface method. SCIENCEASIA 2019. [DOI: 10.2306/scienceasia1513-1874.2019.45.229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Saeng-in P, Phongsopitanun W, Savarajara A, Tanasupawat S. Streptomyces lichenis sp. nov., isolated from lichen. Int J Syst Evol Microbiol 2018; 68:3641-3646. [DOI: 10.1099/ijsem.0.003052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Kunthiphun S, Chokreansukchai P, Hondee P, Tanasupawat S, Savarajara A. Diversity and characterization of cultivable oleaginous yeasts isolated from mangrove forests. World J Microbiol Biotechnol 2018; 34:125. [PMID: 30083778 DOI: 10.1007/s11274-018-2507-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 07/20/2018] [Indexed: 12/20/2022]
Abstract
A total of 198 yeasts were isolated from 140 samples collected from 7 mangrove forests in 4 provinces of Thailand, and were found to belong to 30 genera, 45 described species and at least 12 undescribed species based on their 26S rRNA (D1/D2 domain) gene sequence. The most prevalent species was Candida tropicalis, followed by Candida pseudolambica and Rhodosporidium paludigena. Lipid accumulation, as determined by Nile red staining, of the isolated yeasts revealed that 69 and 18 strains were positive and strongly positive, respectively, while quantitative analysis of the intracellular lipid accumulated in the latter indicated that 10 of these strains, Pseudozyma tsukubaensis (YWT7-2 and YWT7-3), Rhodotorula sphaerocarpa (YWW6-1 and SFL14-1SF), Saitozyma podzolica (YWT1-1, NS3-3 and NS10-2), Prototheca zopfii var. hydrocarbonea OMS6-1 and Prototheca sp. (YMTW3-1 and YMTS5-2), were oleaginous. In this study we found that under nitrogen depletion condition (155 C/N ratio) Pseudozyma tsukubaensis YWT7-2 accumulated the highest level of intracellular lipid at 32.4% (w/w, dry cell weight), with a broadly similar fatty acid composition to that in palm oil.
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Malisorn K, Kanchanasin P, Phongsopitanun W, Tanasupawat S. Actinomadura rhizosphaerae sp. nov., isolated from rhizosphere soil of the plant Azadirachta indica. Int J Syst Evol Microbiol 2018; 68:3012-3016. [PMID: 30063200 DOI: 10.1099/ijsem.0.002940] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel actinomycete, strain SDA37T, belonging to the genus Actinomadura, was isolated from rhizosphere soil collected from Udon Thani Province, Thailand. The taxonomic position of the strain was characterized using a polyphasic approach. Meso-diaminopimelic acid, glucose, ribose, galactose and madurose were detected in cell-wall and whole-cell hydrolysates. The N-acyl type of muramic acid was acetyl. Menaquinones were MK-9(H6), MK-9(H8) and MK-9(H4). The predominant cellular fatty acids were iso-C16 : 0, C16 : 0, 10-methyl C18 : 0 and iso-C14 : 0. The major polar lipids were phosphatidylglycerol, diphosphatidylglycerol and phosphatidylinositol. blast analysis of the almost-complete 16S rRNA gene sequence showed 98.8 % similarity to Actinomadura oligospora NBRC 104149T, 98.7 % similarity to Actinomadura gamaensis DSM 100815T and 97.2 % similarity to Actinomadura rupiterrae KCTC 19559T. The DNA G+C content was 73.1 mol%. Strain SDA37T showed low DNA-DNA relatedness (44.3±7.3 to 58.5±8.7 %) to A. oligospora NBRC 104149T, Actinomadura gamaensis DSM 100815T and Actinomadura rupiterrae KCTC 19559T. The new strain could also be distinguished from its closely related strains by the differences in the phenotypic characteristics. The results of taxonomic analysis suggested that strain SDA37T represented a novel species of the genus Actinomadura for which the name Actinomadura rhizosphaerae sp. nov. is proposed. The type strain is SDA37T (=KCTC 39965T=NBRC 112909T=TISTR 2523T).
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