A Guide for the Classification of Streptomycetes According to Selected Groups. Placement of Strains in Morphological Sections

Pridham, T. G.; Hesseltine, C. W.; Benedict, R. G.

doi:10.1128/am.6.1.52-79.1958

Cited by 303 publications

(38 citation statements)

References 47 publications

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“…The surfaces of the spores are rugose. The spore morphology was consistent with those members of the genus Streptomyces [1, 2].…”

Section: Resultssupporting

confidence: 66%

“…CA1R205 T exhibited chemotaxonomic characteristics, which were typical of those of members of the genus Streptomyces [1, 2]. The strain showed ll -diaminopimelic acid ( ll -DAP) as the diagnostic diamino acid in the cell wall peptidoglycan, but no meso -DAP was detected.…”

Section: Resultsmentioning

confidence: 99%

“…The members of the genus are Gram-positive, filamentous actinobacteria that form an extensively branched substrate mycelium and generally produce spores directly on the aerial mycelium. Spore chains can be formed as being straight to flexuous (Rectus–Flexibilis), open loops (Relinaculam–Apertum), open or closed spirals (Spira), or verticillate [2]. The presence of ll -diaminopimelic acid in the peptidoglycan and lack of diagnostic sugars in whole-cell hydrolysates are diagnostic chemotaxonomic characteristics of this genus.…”

Section: Introductionmentioning

confidence: 99%

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Streptomyces coffeae sp. nov., an endophytic actinomycete isolated from the root of Coffea arabica (L.)

Nammali

Intaraudom

Pittayakhajonwut

et al. 2021

International Journal of Systematic and Evolutionary Microbiology

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An endophytic actinobacterium, designated strain CA1R205T, was isolated from the surface-sterilized root of Coffea arabica L. collected from Ratchaburi province, Thailand. The taxonomic position of this strain was evaluated using a polyphasic approach. The strain produced light yellowish brown to dark brownish black substrate mycelium and greyish white aerial mycelium. The spiral spore chains were produced directly on aerial mycelium. CA1R205T was found to have ll -diaminopimelic acid in the cell peptidoglycan, galactose, glucose, mannose and ribose as whole-cell reducing sugars, MK-10(H4), MK-9(H6), MK-10(H2), MK-9(H4), MK-10(H6) and MK-10(H8) as menaquinones and iso-C15 : 0, anteiso-C15 : 0, iso-C16 : 0 and C16 : 0 as major fatty acids. Diphosphatidylglycerol, phosphatidylethanolamine, hydroxyphosphatidylethanolamine, phosphatidylglycerol and phosphatidylinositol were detected in the cells. These characteristics were consistent the typical chemotaxonomic properties of members the genus Streptomyces . The taxonomic affiliation at the genus level of this strain could be confirmed using its 16S rRNA gene sequence data. CA1R205T showed the highest 16S rRNA gene sequence similarity value to Streptomyces rapamycinicus NRRL B-5491T (98.9 %), followed by Streptomyces iranensis HM 35T (98.8 %). Digital DNA–DNA hybridization and average nucleotide identity-by blast (ANIb) values between CA1R205T and S. rapamycinicus NRRL B-5491T were 27.2 and 81.5 %, respectively. The DNA G+C content of genomic DNA was 70.7 mol%. Due to the differences in physiological, biochemical and genotypic data, CA1R205T could be discriminated from its closest neighbour. Thus, CA1R205T should be recognized as representing a novel species of the genus Streptomyces , for which the name Streptomyces coffeae sp. nov. is proposed. The type strain is CA1R205T (=TBRC 11244T=NBRC 114295T).

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“…The surfaces of the spores are rugose. The spore morphology was consistent with those members of the genus Streptomyces [1, 2].…”

Section: Resultssupporting

confidence: 66%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Streptomyces coffeae sp. nov., an endophytic actinomycete isolated from the root of Coffea arabica (L.)

Nammali

Intaraudom

Pittayakhajonwut

et al. 2021

International Journal of Systematic and Evolutionary Microbiology

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“…Spore chains belonged to section spirales. This suggests that the PA-producing isolate #24 could be considered as S. mutabilis (Preobrazhenskaya and Ryabova in Gauze et al, 1957) Pridham et al (1958 Strain UAE1.…”

Section: Classification and Identification Of The Pa-producing Endophytic Actinobacterial Isolatementioning

confidence: 99%

The Marine Endophytic Polyamine-Producing Streptomyces mutabilis UAE1 Isolated From Extreme Niches in the Arabian Gulf Promotes the Performance of Mangrove (Avicennia marina) Seedlings Under Greenhouse Conditions

et al. 2021

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Mangrove forests in the Arabian Gulf are under continuous threat. To increase plantations of gray mangrove (Avicennia marina) in the United Arab Emirates (UAE), 27 endophytic actinobacterial isolates obtained from mangrove roots were in vitro pre-screened to detect the polyamines (PAs) [putrescine (Put), spermidine (Spd), and spermine (Spm)]. We also determined the abilities of the endophytic PA-producing actinobacterial isolates in enhancing the growth of A. marina under greenhouse conditions. Although three highly PA-producing isolates were recovered from inside mangrove root tissues, Streptomyces mutabilis UAE1 constantly colonized root and stem inner tissues for 12 weeks, suggesting an endophytic association between this actinobacterial isolate and mangrove seedlings. When roots were inoculated with S. mutabilis, mangrove growth was remarkably enhanced under gnotobiotic and greenhouse conditions. This was evident from the significant (P < 0.05) increases in dry weight and length of root (66.7 and 65.5%, respectively) and shoot (64.8 and 58.0%, respectively), number of branches (64.3%), total leaf area (40.2%), and photosynthetic pigments (54.5% chlorophyll a; 40.0% chlorophyll b; and 53.1% carotenoids) of mangrove compared to the PA-non-producing Streptomyces sp. or control treatment. Growth promotion in plants treated with S. mutabilis was also supported by significant (P < 0.05) elevations in the contents of mangrove in planta PAs, auxins, and cytokinins, accompanied by a decrease in abscisic acid levels. No difference was, however, detected in growth and amounts of PAs or any plant growth regulators (PGRs) in plants treated with or without the PA-non-producing isolate. Our findings indicate that plant growth parameters can be enhanced as a consequence of secretion of Put, Spd, and Spm by S. mutabilis resulting in regulation of endogenous PAs and other PGRs in mangrove tissues. This study is the first record that aims to improve sustainable agricultural management practices using plant growth promoting (PGP) actinobacteria, endophytic in mangrove tissues to promote mangrove growth under greenhouse conditions. Such research may allow this region to be a model to study the synergistic S. mutabilis–mangrove interactions and the future impacts on mangrove reforestation in the Arabian Gulf and elsewhere where mangrove forests are in threat.

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“…Improvements in the classification of the S. violaceusniger clade (Rong and Huang 2012 ; Komaki et al 2017 ; Labeda et al 2017 ; Zhou et al 2017 ) led to the recognition of 16 species which include Streptomyces albiflaviniger (Goodfellow et al 2007 , Euzéby 2008 ), Streptomyces himastatinicus (Kumar and Goodfellow 2008 ), Streptomyces hygroscopicus (Jensen 1931 ) Waksman and Henrici 1948 , Streptomyces iranensis (Hamedi et al 2010 ), Streptomyces javensis (Sembiring et al 2000 , 2001 ), Streptomyces malaysiensis (Al-Tai et al 1999 ), Streptomyces melanosporofaciens (Arcamone et al 1959 ), Streptomyces rapamycinicus (Kumar and Goodfellow 2008 ), Streptomyces rhizosphaericus (Sembiring et al 2000 , 2001 ), Streptomyces solisilvae (Zhou et al 2017 ) and Streptomyces violaceusniger corrig (Waksman and Curtis 1916 ) Pridham et al 1958 , as emended by Labeda and Lyons ( 1991 ), the earliest validly published species in the taxon. An additional species, “ Streptomyces ruani ” (Kumar and Goodfellow 2008 ) was shown to be invalid by Tindall ( 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Genome-based classification of the Streptomyces violaceusniger clade and description of Streptomyces sabulosicollis sp. nov. from an Indonesian sand dune

Kusuma

Nouioui

Goodfellow

2021

Antonie van Leeuwenhoek

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A polyphasic study was designed to determine the taxonomic provenance of a strain, isolate PRKS01-29T, recovered from an Indonesian sand dune and provisionally assigned to the Streptomyces violaceusniger clade. Genomic, genotypic and phenotypic data confirmed this classification. The isolate formed an extensively branched substrate mycelium which carried aerial hyphae that differentiated into spiral chains of rugose ornamented spores, contained LL-as the wall diaminopimelic acid, MK-9 (H6, H8) as predominant isoprenologues, phosphatidylethanolamine as the diagnostic phospholipid and major proportions of saturated, iso- and anteiso- fatty acids. Whole-genome sequences generated for the isolate and Streptomyces albiflaviniger DSM 41598T and Streptomyces javensis DSM 41764T were compared with phylogenetically closely related strains, the isolate formed a branch within the S. violaceusniger clade in the resultant phylogenomic tree. Whole-genome sequences data showed that isolate PRKS01-29T was most closely related to the S. albiflaviniger strain but was distinguished from the latter and from other members of the clade using combinations of phenotypic properties and average nucleotide identity and digital DNA:DNA hybridization scores. Consequently, it is proposed that isolate PRKS01-29T (= CCMM B1303T = ICEBB-02T = NCIMB 15210T) should be classified in the genus Streptomyces as Streptomyces sabulosicollis sp. nov. It is also clear that streptomycetes which produce spiral chains of rugose ornamented spores form a well-defined monophyletic clade in the Streptomyces phylogenomic tree., the taxonomic status of which requires further study. The genome of the type strain of S. sabulosicollis contains biosynthetic gene clusters predicted to produce new natural products.

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A Guide for the Classification of Streptomycetes According to Selected Groups. Placement of Strains in Morphological Sections

Cited by 303 publications

References 47 publications

Streptomyces coffeae sp. nov., an endophytic actinomycete isolated from the root of Coffea arabica (L.)

Streptomyces coffeae sp. nov., an endophytic actinomycete isolated from the root of Coffea arabica (L.)

The Marine Endophytic Polyamine-Producing Streptomyces mutabilis UAE1 Isolated From Extreme Niches in the Arabian Gulf Promotes the Performance of Mangrove (Avicennia marina) Seedlings Under Greenhouse Conditions

Genome-based classification of the Streptomyces violaceusniger clade and description of Streptomyces sabulosicollis sp. nov. from an Indonesian sand dune

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