Actinomycetospora iriomotensis sp. nov., a novel actinomycete isolated from a lichen sample

Yamamura, Hideki; Ashizawa, Haruna; Nakagawa, Youji; Hamada, Moriyuki; Ishida, Yuumi; Otoguro, Misa; Tamura, Tomohiko; Hayakawa, Masayuki

doi:10.1038/ja.2011.15

Cited by 36 publications

(10 citation statements)

References 31 publications

(31 reference statements)

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“…Search of special ecological niches along with new methods of isolation of novel genera/species of actinobacteria may lead to the identification of new gene clusters, and hence, new products (Xu et al, 2010 ). Researchers are now focusing on the isolation of actinobacteria from diverse habitats like oceans (Subramani and Aalbersberg, 2013 ), extreme environments (Tang et al, 2003 ; Hamedi et al, 2013 ), inner tissues of plants (Chankhamhaengdecha et al, 2013 ), animals excreta (Cao et al, 2012 ), algae, and lichens (González et al, 2005 ; Yamamura et al, 2011 ). Hence, it is highly encouraging to explore the actinobacteria inhabiting special niches like extremophilic plants for discovering hitherto unexploited strains.…”

Section: Introductionmentioning

confidence: 99%

Diversity and Applications of Endophytic Actinobacteria of Plants in Special and Other Ecological Niches

2018

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Actinobacteria are wide spread in nature and represent the largest taxonomic group within the domain Bacteria. They are abundant in soil and have been extensively explored for their therapeutic applications. This versatile group of bacteria has adapted to diverse ecological habitats, which has drawn considerable attention of the scientific community in recent times as it has opened up new possibilities for novel metabolites that may help in solving some of the most challenging problems of the day, for example, novel drugs for drug-resistant human pathogens, affordable means to maintain ecological balance in various habitats, and alternative practices for sustainable agriculture. Traditionally, free dwelling soil actinobacteria have been the subject of intensive research. Of late, symbiotic actinobacteria residing as endophytes within the plant tissues have generated immense interest as potential source of novel compounds, which may find applications in medicine, agriculture, and environment. In the light of these possibilities, this review focuses on the diversity of endophytic actinobacteria isolated from the plants of extreme habitats and specific ecological niches. Furthermore, an attempt has been made to assign chemical class to the compounds obtained from endophytic actinobacteria. Potential therapeutic applications of these compounds and the utility of endophytic actinobacteria in agriculture and environment are discussed.

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Section: Introductionmentioning

confidence: 99%

Diversity and Applications of Endophytic Actinobacteria of Plants in Special and Other Ecological Niches

2018

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“…Recent studies have described the isolation of different species of actinomycete from lichen, such as Actinomycetospora iriomotensis (Yamamura et al, 2011a), Actinomycetospora rishiriensis (Yamamura et al, 2011b) and Nocardioides exalbidus (Li et al, 2007). In the course of our investigation into the diversity of actinomycetes in Thailand, we obtained strain LDG1-22 T from lichen Flavoparmelia sp.…”

mentioning

confidence: 99%

Actinoplanes lichenis sp. nov., isolated from lichen

Phongsopitanun

Matsumoto

Inahashi

et al. 2016

International Journal of Systematic and Evolutionary Microbiology

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A novel species of the genus Actinoplanes, strain LDG1-22 T , for which we propose the name Actinoplanes lichenis sp. nov., was isolated from a lichen sample collected from tree bark in Thailand. The taxonomic position of the species has been described based on a polyphasic approach. Strain LDG1-22 T produced irregular sporangia on agar media. It contained mesodiaminopimelic acid in the cell-wall peptidoglycan. The major menaquinone was MK-9(H 4 ); the polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol, phosphatidylinositol mannosides and phosphatidylglycerol. Whole-cell hydrolysates contained ribose, glucose, mannose and small amounts of arabinose and xylose. The major cellular fatty acids were anteiso-C 15 : 0 (31.2 %) and iso-C 16 : 0 (14.2 %). Mycolic acids were absent. The G+C content was 73.6 %. 16S rRNA gene sequence analysis of strain LDG1-22 T showed highest similarity (98.8 %) to Actinoplanes friuliensis DSM 45797 T and it clustered with Actinoplanes nipponensis JCM 3264 T and Actinoplanes missouriensis JCM 3121 T in phylogenetic tree analysis. On the basis of the phenotypic characteristics and DNA-DNA relatedness, strain LDG1-22 T could be distinguished from related species of the genus Actinoplanes and so represents a novel species of this genus. The type strain of Actinoplanes lichenis sp. nov. is LDG1-22 T (5JCM 30485 T 5TISTR 2343 T 5PCU 344 T ).The genus Actinoplanes, which belongs to the family Micromonosporaceae, was first described by Couch (1950). Members of this genus can be differentiated from other related genera in the family Micromonosporaceae by considering phenotypic characteristics, especially the formation of sporangia as well as the presence of motile spores and from chemotaxonomic characteristics, including 16S rRNA gene sequence-based phylogenetic clustering (Vobis et al., 2012). As with most actinomycetes, strains of species of the genus Actinoplanes are widely distributed in soils from various environments around the world (Couch, 1963;Parenti & Coronelli, 1979;Vobis et al., 2012). At the time of writing, the genus Actinoplanes comprises 39 species with validly published names (Parte, 2014). Some antibiotics have been shown to be produced by strains of species of Actinoplanes such as lipiarmycin (anti Gram-positive bacteria activity), teicoplanin (inhibits cell wall synthesis of Gram-positive bacteria) and friulimicin (has peptidoglycan synthesis inhibiting activity) from Actinoplanes deccanensis, Actinoplanes teichomyceticus and Actinoplanes friuliensis, respectively (Aretz et al., 2000;Coronelli et al., 1975;Somma et al., 1984).We have attempted to find a novel source, other than terrestrial soils, for isolating novel actinomycetes. Recent studies have described the isolation of different species of actinomycete from lichen, such as Actinomycetospora iriomotensis (Yamamura et al., 2011a), Actinomycetospora rishiriensis (Yamamura et al., 2011b) and Nocardioides exalbidus (Li et al., 2007). In the course of our investigation into the diversi...

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“…[3][4][5][6][7] During the screening of lichen-associated actinobacteria, we isolated a novel actinobacterium (strain RI148-Li105 T ) from a foliaceous lichen sample collected from Rishiri Island, Hokkaido, Japan. Comparative 16S rRNA gene sequence analysis revealed that the isolate is related to the genus Luteimicrobium.…”

Section: Introductionmentioning

confidence: 99%

Luteimicrobium album sp. nov., a novel actinobacterium isolated from a lichen collected in Japan, and emended description of the genus Luteimicrobium

et al. 2012

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A novel Gram-stain-positive actinobacterium, designated RI148-Li105 T , was isolated from a lichen sample from Rishiri Island, Japan, and its taxonomic position was investigated by a polyphasic approach. 16S rRNA gene sequencing study indicated that strain RI148-Li105 T was related to the type strain of Luteimicrobium subarcticum, with a similarity of 97.8%. Cells of strain RI148-Li105 T exhibited a rod-coccus cycle. The diagnostic cell-wall diamino acid of this organism was lysine and the peptidoglycan type was found to be A4a. The predominant menaquinones were MK-8(H 2 ) and MK-9(H 2 ), and the major fatty acids were iso-C 16:0 , C 17:1 x9c and C 17:0 . The DNA G þ C content was 73.6 mol%. The major phenotypic characteristics of strain RI148-Li105 T basically corresponded to those of the genus Luteimicrobium excluding the fatty acid composition. These results suggest that strain RI148-Li105 T should be affiliated with the genus Luteimicrobium. Meanwhile, DNA-DNA hybridization and some phenotypic characteristics revealed that the strain differs from L. subarcticum. Therefore, strain RI148-Li105 T represents a novel species of the genus Luteimicrobium, for which the name Luteimicrobium album sp. nov. is proposed. The type strain of Luteimicrobium album is RI148-Li105 T ( ¼ NBRC 106348 T ¼ DSM 24866 T ).

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Actinomycetospora iriomotensis sp. nov., a novel actinomycete isolated from a lichen sample

Cited by 36 publications

References 31 publications

Diversity and Applications of Endophytic Actinobacteria of Plants in Special and Other Ecological Niches

Diversity and Applications of Endophytic Actinobacteria of Plants in Special and Other Ecological Niches

Actinoplanes lichenis sp. nov., isolated from lichen

Luteimicrobium album sp. nov., a novel actinobacterium isolated from a lichen collected in Japan, and emended description of the genus Luteimicrobium

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