The Family Promicromonosporaceae

Schümann, Peter; Stackebrandt, Erko

doi:10.1007/978-3-642-30138-4_173

Cited by 2 publications

(1 citation statement)

References 77 publications

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“…S1E ). The Cellulomonas species are known for their cellulolytic activity and include a haloalkaliphilic isolate from a Kenyan soda lake ( Jones et al, 2005 ), while the genus Isoptericola mostly include halotolarant representatives, although the described neutrophic species apparently have only a limited hydrolytic activity ( Schumann & Stackebrandt, 2014 ).…”

Section: Resultsmentioning

confidence: 99%

Diversity of cultivated aerobic poly-hydrolytic bacteria in saline alkaline soils

Sorokin

Kolganova

Khijniak

et al. 2017

PeerJ

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Alkaline saline soils, known also as “soda solonchaks”, represent a natural soda habitat which differs from soda lake sediments by higher aeration and lower humidity. The microbiology of soda soils, in contrast to the more intensively studied soda lakes, remains poorly explored. In this work we investigate the diversity of culturable aerobic haloalkalitolerant bacteria with various hydrolytic activities from soda soils at different locations in Central Asia, Africa, and North America. In total, 179 pure cultures were obtained by using media with various polymers at pH 10 and 0.6 M total Na+. According to the 16S rRNA gene sequence analysis, most of the isolates belonged to Firmicutes and Actinobacteria. Most isolates possessed multiple hydrolytic activities, including endoglucanase, xylanase, amylase and protease. The pH profiling of selected representatives of actinobacteria and endospore-forming bacteria showed, that the former were facultative alkaliphiles, while the latter were mostly obligate alkaliphiles. The hydrolases of selected representatives from both groups were active at a broad pH range from six to 11. Overall, this work demonstrates the presence of a rich hydrolytic bacterial community in soda soils which might be explored further for production of haloalkalistable hydrolases.

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Section: Resultsmentioning

confidence: 99%

Diversity of cultivated aerobic poly-hydrolytic bacteria in saline alkaline soils

Sorokin

Kolganova

Khijniak

et al. 2017

PeerJ

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Biochar-carrying hydrocarbon decomposers promote degradation during the early stage of bioremediation

2016

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Abstract. Oil pollution is one of the most serious current environmental problems. In this study, four strategies of bioremediation of oil-polluted soil were tested in the laboratory over a period of 84 days: (A) aeration and moistening; (B) amendment with 1 % biochar (w ⁄ w) in combination with A; amendment with 1 % biochar with immobilized Pseudomonas aeruginosa (C) or Acinetobacter radioresistens (D) in combination with A. All strategies used resulted in a decrease of the hydrocarbon content, while biochar addition (B, C, D strategies) led to acceleration of decomposition in the beginning. Microbial biomass and respiration rate increased significantly at the start of bioremediation. It was demonstrated that moistening and aeration were the main factors influencing microbial biomass, while implementation of biochar and introduction of microbes were the main factors influencing microbial respiration. All four remediation strategies altered bacterial community structure and phytotoxicity. The Illumina MiSeq method revealed 391 unique operational taxonomic units (OTUs) belonging to 40 bacterial phyla and a domination of Proteobacteria in all investigated soil samples. The lowest alpha diversity was observed in the samples with introduced bacteria on the first day of remediation. Metric multidimensional scaling demonstrated that in the beginning and at the end, microbial community structures were more similar than those on the 28th day of remediation. Strategies A and B decreased phytotoxicity of remediated soil between 2.5 and 3.1 times as compared with untreated soil. C and D strategies led to additional decrease of phytotoxicity between 2.1 and 3.2 times.

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The Family Promicromonosporaceae

Cited by 2 publications

References 77 publications

Diversity of cultivated aerobic poly-hydrolytic bacteria in saline alkaline soils

Diversity of cultivated aerobic poly-hydrolytic bacteria in saline alkaline soils

Biochar-carrying hydrocarbon decomposers promote degradation during the early stage of bioremediation

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