<i>Nocardioidaceae</i>

Evtushenko, Lyudmila I.; Ariskina, Elena V.

doi:10.1002/9781118960608.fbm00042

Cited by 13 publications

(5 citation statements)

References 106 publications

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“…Nocardioidaceae , Planctomycetaceae , and Rubrobacteraceae were keystone taxa of bacterial classes in the network. Nocardioidaceae uses a wide range of carbon and nitrogen sources, including unusual organic compounds and toxic environmental pollutants, and has versatile metabolic pathways ( Evtushenko et al, 2015 ). Like many other actinomycetes, Nocardioidaceae can survive under extreme conditions such as desiccation, low and high temperatures, UV damage, and toxic compounds ( Kirby et al, 2006 ; Brodie et al, 2007 ; Griffin, 2007 ; Polymenakou et al, 2008 ).…”

Section: Discussionmentioning

confidence: 99%

The Characterization of Microbiome and Interactions on Weathered Rocks in a Subsurface Karst Cave, Central China

et al. 2022

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Karst caves are a natural oligotrophic subsurface biosphere widely distributed in southern China. Despite the progress in bacterial and fungal diversity, the knowledge about interactions between bacteria, fungi, and minerals is still limited in caves. Hence, for the first time, we investigated the interaction between bacteria and fungi living on weathered rocks in the Heshang Cave via high-throughput sequencing of 16S rRNA and ITS1 genes, and co-occurrence analysis. The mineral compositions of weathered rocks were analyzed by X-ray diffraction. Bacterial communities were dominated by Actinobacteria (33.68%), followed by Alphaproteobacteria (8.78%), and Planctomycetia (8.73%). In contrast, fungal communities were dominated by Sordariomycetes (21.08%) and Dothideomycetes (14.06%). Mineral substrata, particularly phosphorus-bearing minerals, significantly impacted bacterial (hydroxyapatite) and fungal (fluorapatite) communities as indicated by the redundancy analysis. In comparison with fungi, the development of bacterial communities was more controlled by the environmental selection indicated by the overwhelming contribution of deterministic processes. Co-occurrence network analysis showed that all nodes were positively linked, indicating ubiquitous cooperation within bacterial groups and fungal groups, as well as between bacteria and fungi under oligotrophic conditions in the subsurface biosphere. In total, 19 bacterial ASVs and 34 fungal OTUs were identified as keystone taxa, suggesting the fundamental role of fungi in maintaining the microbial ecosystem on weathered rocks. Ascomycota was most dominant in keystone taxa, accounting for 26.42%, followed by Actinobacteria in bacteria (24.53%). Collectively, our results confirmed the highly diverse bacterial and fungal communities on weathered rocks, and their close cooperation to sustain the subsurface ecosystem. Phosphorus-bearing minerals were of significance in shaping epipetreous bacterial and fungal communities. These observations provide new knowledge about microbial interactions between bacteria, fungi, and minerals in the subterranean biosphere.

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Section: Discussionmentioning

confidence: 99%

The Characterization of Microbiome and Interactions on Weathered Rocks in a Subsurface Karst Cave, Central China

et al. 2022

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“…[15–20]). Thus, resting and/or vegetative cells may survive and maintain metabolic activity under extreme conditions such as increased UV and nuclear radiation, as well as heavy metal and other pollutant concentrations [5, 15]. Members of the genus are a most likely involved in the turnover of organic matter in ecosystems as they can degrade and metabolize a wide range of natural organic compounds.…”

Section: Isolation and Ecologymentioning

confidence: 99%

“…Generally, strain NGK65 T shows a lower 16S rRNA gene sequence similarity (94.6%) to the type species of the genus Nocardioides N. albus (94.6%), as with Marmoricola aurantiacus BC361 (95.3%), the type species of the genus Marmoricola . Members of the genus Marmoricola cluster close to the Nocardioides forming a common clade at the periphery of Nocardioides [15]. Strain NGK65 T adds to a group of species that occupy a phylogenetic position intermediate between Marmoricola and Nocardioides (Fig.…”

Section: Physiology and Chemotaxonomymentioning

confidence: 99%

“…Representatives of the genus Nocardioides also occur in polluted soils and industrial wastewaters including toxic polyaromatics, heavy metals and nuclear waste (e.g. [15–20]). Thus, resting and/or vegetative cells may survive and maintain metabolic activity under extreme conditions such as increased UV and nuclear radiation, as well as heavy metal and other pollutant concentrations [5, 15].…”

Section: Isolation and Ecologymentioning

confidence: 99%

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Nocardioides alcanivorans sp. nov., a novel hexadecane-degrading species isolated from plastic waste

Mitzscherling

MacLean

Bartholomäus

et al. 2022

International Journal of Systematic and Evolutionary Microbiology

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Strain NGK65T, a novel hexadecane degrading, non-motile, Gram-positive, rod-to-coccus shaped, aerobic bacterium, was isolated from plastic polluted soil sampled at a landfill. Strain NGK65T hydrolysed casein, gelatin, urea and was catalase-positive. It optimally grew at 28 °C, in 0–1% NaCl and at pH 7.5–8.0. Glycerol, d-glucose, arbutin, aesculin, salicin, potassium 5-ketogluconate, sucrose, acetate, pyruvate and hexadecane were used as sole carbon sources. The predominant membrane fatty acids were iso-C16:0 followed by iso-C17:0 and C18:1 ω9c. The major polar lipids were phosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol and hydroxyphosphatidylinositol. The cell-wall peptidoglycan type was A3γ, with ll-diaminopimelic acid and glycine as the diagnostic amino acids. MK 8 (H4) was the predominant menaquinone. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain NGK65T belongs to the genus Nocardioides (phylum Actinobacteria ), appearing most closely related to Nocardioides daejeonensis MJ31T (98.6%) and Nocardioides dubius KSL-104T (98.3%). The genomic DNA G+C content of strain NGK65T was 68.2%. Strain NGK65T and the type strains of species involved in the analysis had average nucleotide identity values of 78.3–71.9% as well as digital DNA–DNA hybridization values between 22.5 and 19.7%, which clearly indicated that the isolate represents a novel species within the genus Nocardioides . Based on phenotypic and molecular characterization, strain NGK65T can clearly be differentiated from its phylogenetic neighbours to establish a novel species, for which the name Nocardioides alcanivorans sp. nov. is proposed. The type strain is NGK65T (=DSM 113112T=NCCB 100846T).

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“…Like other Actinobacteria , they are considered to be consumers of organic substances in the ecosystem. Many biological groups in this family could metabolize refractory and foreign compounds by secreting a series of extracellular enzymes ( Evtushenko and Ariskina, 2015 ). They may also use organic matter or the input of some atmospheric gases and minerals to participate in various chemical energy and nutrient metabolic processes ( Evtushenko and Ariskina, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Characterization of a Deep-Sea Actinobacterium Strain Uncovers Its Prominent Capability of Utilizing Taurine and Polyvinyl Alcohol

et al. 2022

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Actinobacteria represent a large group of important prokaryotes with great application potentials and widely distribute in diverse natural environments including the ocean. However, compared to their terrestrial cultured members, there are much less available marine Actinobacteria, especially deep-sea counterparts. Here, we cultured a bacterial strain of deep-sea actinobacterium, Marmoricola sp. TYQ2, by using a basal medium supplemented with taurine. Consistently, the growth of strain TYQ2 was significantly promoted by the supplement of taurine. Transcriptomic analysis showed that the expressions of genes encoding proteins associated with taurine metabolization and utilization as well as energy generation were evidently up-regulated when taurine was added. Moreover, strain TYQ2 was demonstrated to degrade polyvinyl alcohol (PVA) with the involvement of the redox cycle of extracellular quinol and quinone and the reduction of iron to ferrous, and strain TYQ2 could utilize the degradation products for energy production, thereby supporting bacterial growth. Overall, our experimental results demonstrate the prominent degradation capabilities of Marmoricola sp. TYQ2 toward the organics taurine and PVA.

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Nocardioidaceae

Cited by 13 publications

References 106 publications

The Characterization of Microbiome and Interactions on Weathered Rocks in a Subsurface Karst Cave, Central China

The Characterization of Microbiome and Interactions on Weathered Rocks in a Subsurface Karst Cave, Central China

Nocardioides alcanivorans sp. nov., a novel hexadecane-degrading species isolated from plastic waste

Characterization of a Deep-Sea Actinobacterium Strain Uncovers Its Prominent Capability of Utilizing Taurine and Polyvinyl Alcohol

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