Draft Genome Sequences of 10 Strains of the Genus
            <i>Exiguobacterium</i>

Vishnivetskaya, Tatiana A.; Chauhan, Archana; Layton, Alice C.; Pfiffner, Susan M.; Copeland, Alex; Chen, Amy; Kyrpides, Nikos C.; Markowitz, Victor; Palaniappan, Krishna; Ivanova, Natalia; Mikhailova, Natalia; Ovchinnikova, Galina; Andersen, Evan; Pati, Amrita; Stamatis, Dimitrios; Reddy, T. B. K.; Shapiro, Nicole; Nordberg, Henrik; Cantor, Michael; Hua, Xiuting; Woyke, Tanja

doi:10.1128/genomea.01058-14

Cited by 21 publications

(22 citation statements)

References 13 publications

(14 reference statements)

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“…Genes related to auxin biosyntheis, siderophores and iron metabolism have also been identified in the genome of this bacterium (Tang et al, 2013). The genome analysis of ten Exiguobacterium strains isoalted from various environments by Vishnivetskaya et al (2014) have revelaed a whole arsenal of stress responsive genes including the two most abundant transposase families, transposase/inactivated derivatives and IS605 (orfB), in all strains. The strains contained two to seven cold shock protein genes (COG1278), one molecular chaperone GrpE (heat shock protein, COG0576), one ribosome associated heat shock protein (S4 paralog, COG1188), three chaperonin GroEL (HSP60 family, COG0459), three cochaperonin GroES (HSP10, COG0234), and four fatty acid desaturase (COG3239) genes per strain.…”

Section: Exiguobacteriummentioning

confidence: 99%

Novel plant growth promoting rhizobacteria—Prospects and potential

Chauhan¹,

Bagyaraj²,

Selvakumar

et al. 2015

Applied Soil Ecology

198

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Section: Exiguobacteriummentioning

confidence: 99%

Novel plant growth promoting rhizobacteria—Prospects and potential

Chauhan¹,

Bagyaraj²,

Selvakumar

et al. 2015

Applied Soil Ecology

198

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“…Members of this genus are biochemically and morphologically diverse and are found in diverse habitats such as soil, rhizosphere and survive under extreme environmental conditions (Vishnivetskaya et al ., 2009; Remonsellez et al ., 2018). Exiguobacterium genus comprises halophilic, psychrotrophic and moderate thermophilic species (Vishnivetskaya et al ., 2014; Kasana and Pandey, 2018), with noticeable morphological diversity depending on species, strain and environmental conditions. In 1983, first time an alkalophilic bacterium was reported which was classified in a new genus Exiguobacterium and species Exiguobacterium aurantiacum (Collins et al ., 1983).…”

Section: Introductionmentioning

confidence: 99%

Pan‐genome analysis of Exiguobacterium reveals species delineation and genomic similarity with Exiguobacterium profundum PHM 11

Srivastava

Sharma

et al. 2020

Environ Microbiol Rep

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The stint of the bacterial species is convoluting, but the new algorithms to calculate genome-to-genome distance (GGD) and DNA-DNA hybridization (DDH) for comparative genome analysis have rejuvenated the exploration of species and sub-species characterization. The present study reports the first whole genome sequence of Exiguobacterium profundum PHM11. PHM11 genome consist of~2.92 Mb comprising 48 contigs, 47.93% G + C content. Functional annotations revealed a total of 3033 protein coding genes and 33 non-protein coding genes. Out of these, only 2316 could be characterized and others reported as hypothetical proteins. The comparative analysis of predicted proteome of PHM11 with five other Exiguobacterium sp. identified 3806 clusters, out of which the PHM11 shared a total of 2723 clusters having 1664 common clusters, 131 singletons and 928 distributed between five species. The pan-genome analysis of 70 different genomic sequences of Exigubacterium strains devoid of a species taxon was done on the basis of GGD and the DDH which identified eight genomes analogous to the PHM11 at species level and may be characterized as E. profundum. The ANI value and phylogenetic tree analysis also support the same. The results regarding pan-genome analysis provide a convincing insight for delineation of these eight strains to species.

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“…Additionally, E. profundum and E. aurantiacum show privileged homology since they are clustered in a joint node, despite showing higher speciation [3]. At the genome level, the draft sequence of E. aurantiacum, E. profundum [31] and the sequence/assembly of E. acetylicum are available in the databases.…”

Section: Discussionmentioning

confidence: 99%

In vitro biosynthesis of Ag, Au and Te-containing nanostructures by Exiguobacterium cell-free extracts

et al. 2020

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Background: The bacterial genus Exiguobacterium includes several species that inhabit environments with a wide range of temperature, salinity, and pH. This is why the microorganisms from this genus are known generically as polyextremophiles. Several environmental isolates have been explored and characterized for enzyme production as well as for bioremediation purposes. In this line, toxic metal(loid) reduction by these microorganisms represents an approach to decontaminate soluble metal ions via their transformation into less toxic, insoluble derivatives. Microbial-mediated metal(loid) reduction frequently results in the synthesis of nanoscale structures-nanostructures (NS)-. Thus, microorganisms could be used as an ecofriendly way to get NS. Results: We analyzed the tolerance of Exiguobacterium acetylicum MF03, E. aurantiacum MF06, and E. profundum MF08 to Silver (I), gold (III), and tellurium (IV) compounds. Specifically, we explored the ability of cell-free extracts from these bacteria to reduce these toxicants and synthesize NS in vitro, both in the presence or absence of oxygen. All isolates exhibited higher tolerance to these toxicants in anaerobiosis. While in the absence of oxygen they showed high tellurite-and silver-reducing activity at pH 9.0, whereas AuCl 4 − which was reduced at pH 7.0 in both conditions. Given these results, cell-free extracts were used to synthesize NS containing silver, gold or tellurium, characterizing their size, morphology and chemical composition. Silver and tellurium NS exhibited smaller size under anaerobiosis and their morphology was circular (silver NS), starred (tellurium NS) or amorphous (gold NS). Conclusions: This nanostructure-synthesizing ability makes these isolates interesting candidates to get NS with biotechnological potential.

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Draft Genome Sequences of 10 Strains of the Genus Exiguobacterium

Cited by 21 publications

References 13 publications

Novel plant growth promoting rhizobacteria—Prospects and potential

Novel plant growth promoting rhizobacteria—Prospects and potential

Pan‐genome analysis of Exiguobacterium reveals species delineation and genomic similarity with Exiguobacterium profundum PHM 11

In vitro biosynthesis of Ag, Au and Te-containing nanostructures by Exiguobacterium cell-free extracts

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