Acidophilic and acid-tolerant actinomycetes in an acid tea field soil.

Nioh, Ichio; Osada, Madoka; Yamamura, Tadanori; Muramatsu, Keiichiro

doi:10.2323/jgam.41.175

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…Various techniques for the isolation of novel microbial strains have been reported in order to facilitate the discovery of novel bioactive compounds from micro-organisms. An efficient method of discovering novel bioactive metabolites is through the isolation of new micro-organisms, and numerous approaches have been attempted to date (Huck et al, 1991;Iwai & Takahashi, 1992;Jiang & Xu, 1996;Nioh et al, 1995;Nonomura & Hayakawa, 1988;Suzuki et al, 1998;Takeuchi & Hatano, 1999). In a previous report, a new isolation method using agar medium containing oxidant scavengers, such as superoxide dismutase (SOD) or SOD plus catalase, was described (Takahashi et al, 2003).…”

mentioning

confidence: 99%

Oryzihumus leptocrescens gen. nov., sp. nov.

Kageyama

Takahashi

Seki

et al. 2005

International Journal of Systematic and Evolutionary Microbiology

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Three novel strains were isolated from a soil sample collected in Japan using GPM agar plates supplemented with superoxide dismutase and/or catalase. The strains were Gram-positive, catalase-positive, irregular rod-shaped bacteria with meso-diaminopimelic acid as a peptidoglycan diagnostic diamino acid, and the acyl type of the peptidoglycan was acetyl. The major menaquinone was MK-8(H4). Mycolic acids were not detected. The G+C content of the DNA was 72–73 mol%. On the basis of morphological and chemotaxonomic properties and a phylogenetic analysis using 16S rRNA gene sequences, these strains were classified as a novel genus and species, Oryzihumus leptocrescens gen. nov., sp. nov., in the family Intrasporangiaceae of the order Actinomycetales. The type strain is KV-628T (=NRRL B-24347T=JCM 12835T=NBRC 100762T).

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mentioning

confidence: 99%

Oryzihumus leptocrescens gen. nov., sp. nov.

Kageyama

Takahashi

Seki

et al. 2005

International Journal of Systematic and Evolutionary Microbiology

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“…The most continuously described acidophilic actinobacteria belonged to the genus Streptomyces, partly because they are abundant in nearly all soils (Zakalyukina et al 2002, Kim et al 2004). Previous reports (Nioh et al 1995) have shown that within the actinobacteria populations under the acidic soil in tea culture, the acid-tolerant actinobacteria especially belonged to Streptomycetes, and to actinobacteria generally associated to Glycomyces and Actinoplanes genera. It has subsequently been observed that the growth pH ranges of Streptomyces spp.…”

Section: Actinobacteria In Acidic Soilmentioning

confidence: 83%

Actinomycetes in Environmental Applications

Kontro

Yaradoddi

2021

Actinobacteria

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The presence of soil actinomycetes induces plant health by persuading plant growth and development by producing phytohormones. Endophytic actinobacteria such as Actinoplanes, Micromonospora, and Nocardiopsis are the major producers of important phytohormones like indole-3-pyruvic acid (IPYA) and indole-3-acetic acid, whose main function lies in controlling gene regulation and in coordinating cell growth. Describing the microbially produced phytohormone is extremely difficult compared to the phytohormones produced by the host organisms. However, in vitro produced compounds by root colonizing actinobacteria dictate which microorganism is suitable to maintain plant health. Soil actinomycetes, especially Streptomyces, usually enhance the nutrient absorption capabilities of plants along with the growth of rhizobia provided with the soil nutrients. Composting with biomass enzymatic hydrolysis may help to alter the physicochemical and biological properties of the soil's nature. This compost can be easily prepared using consortia of microorganisms, and the process involves rapid mixing of different groups of organisms, especially bacteria belonging to actinomycetes. Other unique environments where actinobacteria occur include fungus-farming ants, beewolf wasps offspring protection, and bioweathering of rock minerals. The examples presented illustrate how diverse actinobacteria can occur in different environments. Genetic methods have also revealed that only a small fraction of these actinbacterial functions are known.

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“…However, there have been few studies related to this aspect which are nitrification and autotrophic nitrifying bacteria in acid tea soils (Walker and Wickramasinghe, 1979;Hayatsu and Kosuge, 1993), acidity-tolerant and Al-resistant microorganisms (Konishi et al, 1994;Nioh et al, 1995;Kanazawa and Kunito, 1996;Kawai et al, 2000;Kanazawa et al, 2005;Takashi et al, 2012;Wang et al 2013;Chao et al, 2013) and microbial activities in tea soil (Nioh et al, 1993;Hayatsu, 1993;Kamimura and Hayano, 2000;Koga et al, 2003;Han et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Identification and characterization of acidity-tolerant and aluminum-resistant bacterium isolated from tea soil

Chau¹,

Thien²,

Kanazawa³

2014

Afr. J. Biotechnol.

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An acidity-tolerant, aluminum resistant bacterium was isolated from tea soils in Kagoshima Experimental Station (Japan). Based on the morphological, physiological and biochemical characteristics and 16S rDNA nucleotide sequence analysis, the bacterium was identified as Bacillus sp. An 3 (DQ234657) in Bacillus cereus group. The bacterium was able to grow on S-LB plates (pH 3.7) with 1.0 g/L Al and survived in LB broth even at 10 g/L Al (pH 2.0). While cultured, the growth of the bacterial strain in LB liquid medium containing increasing concentrations of Al (0, 100 and 200 ppm), was inhibited by the presence of Al, especially at concentration of 200 ppm. The pH of culture medium without Al increased steeply and reached pH 7.0 after 10 days, meanwhile it was almost constant in the other cases. The elimination of Al from culture medium by the bacterium was also affirmed and it was more conspicuous at 100 ppm Al. Due to their tolerance to high acidity, resistance to and removal of a substantial amount of Al, the bacterium might be applicable in restoring acidic soils, particularly acidified tea garden soils.

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Acidophilic and acid-tolerant actinomycetes in an acid tea field soil.

Cited by 9 publications

References 6 publications

Oryzihumus leptocrescens gen. nov., sp. nov.

Oryzihumus leptocrescens gen. nov., sp. nov.

Actinomycetes in Environmental Applications

Identification and characterization of acidity-tolerant and aluminum-resistant bacterium isolated from tea soil

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