Molecular genetic and chemotaxonomic identification of the bacterium of the genus Ochrobactrum possessing oil-oxidizing and nitrogen-fixing activity

Korshunova, T. Yu.; Mukhamatdyarova, S. R.; Логинов, О. Н.

doi:10.1134/s1062359017050090

Cited by 4 publications

(3 citation statements)

References 36 publications

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“…Denovo35805, for example, significantly correlated with 14 OTUs belonging to five phyla. The OTUs belonging to the genus Ochrobactrum are known to convert soil substances [ 52 ], thereby playing an important role in bacterial response to FT events. Meanwhile, Denovo35805 also significantly and negatively correlated with PA and NRA, implying that this OTU may be driven by abiotic environment and then influence other species as a biotic filter.…”

Section: Discussionmentioning

confidence: 99%

Effect of Freeze-Thaw on a Midtemperate Soil Bacterial Community and the Correlation Network of Its Members

Yang

Jiang

Tian

et al. 2018

BioMed Research International

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Freeze-thaw (FT) events can influence soil functions. However, the overall impact of FTs on soil bacterial communities, especially in temperate regions, remains unclear. In this study, soil samples were collected from a midtemperate region in the northeast of China, and three incubation tests were then designed with varied FT amplitudes (i.e., at a freezing temperature of −15, −9, and −3°C, respectively), frequencies of FT cycles (i.e., under one, six, and 15 FT cycles, respectively) and soil water content (SWC) values (i.e., at 10 and 30% SWC, respectively). High-throughput sequencing of 16S rRNA gene amplicons was performed and the functional profile was further predicted based on these data, in addition to examinations of bulk microbial properties. Data analyses suggested that, first of all, the FT amplitude significantly influenced the bulk microbial properties and bacterial community (composition and function); certain taxa showed a nonlinear response to the three amplitudes. Next, compared to a single FTC, multiple FT cycles had only minor effects on the bacterial functional capabilities, although the bulk microbial properties changed significantly after multiple FT cycles. In addition, the bacterial response to FTs was influenced by the SWC, characterized by the significantly different bacterial community structures (composition and function) and the opposite trends of enzyme activities. Finally, RDA plots and a correlation network assembled data from all soil samples across the three tests and suggested that bacterial response trajectories changed because some species were influenced mainly by other species (i.e., biotic environment) during FT processes.

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Section: Discussionmentioning

confidence: 99%

Effect of Freeze-Thaw on a Midtemperate Soil Bacterial Community and the Correlation Network of Its Members

Yang

Jiang

Tian

et al. 2018

BioMed Research International

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“…Delftia was the most abundant genus of Comamonadaceae, and it has the capacity to degrade lignin-derived aromatic compounds [98]. Brucellaceae and Bradyrhizobiaceae are most important for nitrogen-fixation [99,100]. Ochrobactrum and Nitrobacter were the most enriched genera of these families respectively, and their nitrite-oxidizing potential has been discussed before.…”

Section: Preference Of Bacterial Lineages To Different Dietsmentioning

confidence: 99%

Exploring the effect of plant substrates on bacterial community structure in termite fungus-combs

et al. 2020

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Fungus-cultivating termites are successful herbivores largely rely on the external symbiotic fungus-combs to decompose plant polysaccharides. The comb harbors both fungi and bacteria. However, the complementary roles and functions of the bacteria are out of the box. To this purpose, we look into different decomposition stages of fungus-combs using highthroughput sequencing of the 16S rRNA gene to examine bacterial community structure. We also explored the bacterial response to physicochemical indexes (such as moisture, ash content and organic matter) and plant substrates (leaves or branches or mix food). Some specific families such as Lachnospiraceae, Ruminococcaceae, and Peptostreptococcaceae may be involved in lignocellulose degradation, whereas Burkholderiaceae may be associated with aromatic compounds degradation. We observed that as the comb mature there is a shift of community composition which may be an adjustment of specific bacteria to deal with different lignocellulosic material. Our results indicated that threshold amount of physicochemical indexes are beneficial for bacterial diversity but too high moisture, low organic matter and high ash content may reduce their diversity. Furthermore, the average highest bacterial diversity was recorded from the comb built by branches followed by mix food and leaves. Besides, this study could help in the use of bacteria from the comb of fungus-cultivating termites in forestry and agricultural residues making them easier to digest as fodder.

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“…PGPRs increase plant tolerance to petroleum pollutants and other stresses (Gerhardt et al, 2009). Alongside the degradation of organic pollutants (Chetverikov et al, 2017, Korshunova et al, 2017), they vigorously promote plant biomass accumulation (Glick, 2003), allowing faster remediation than without PGPR application (Glick et al, 1998). Inoculating oat ( Avena sativa ) plants with Acinetobacter sp.…”

Section: Introductionmentioning

confidence: 99%

Phytohormone Mediation of Interactions Between Plants and Non-Symbiotic Growth Promoting Bacteria Under Edaphic Stresses

et al. 2019

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The capacity of rhizoshere bacteria to influence plant hormonal status, by bacterial production or metabolism of hormones, is considered an important mechanism by which they promote plant growth, and productivity. Nevertheless, inoculating these bacteria into the plant rhizosphere may produce beneficial or detrimental results depending on bacterial effects on hormone composition and quantity in planta, and the environmental conditions under which the plants are growing. This review considers some effects of bacterial hormone production or metabolism on root growth and development and shoot physiological processes. We analyze how these changes in root and shoot growth and function help plants adapt to their growth conditions, especially as these change from optimal to stressful. Consistent effects are addressed, along with plant responses to specific environmental stresses: drought, salinity, and soil contamination (with petroleum in particular).

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Molecular genetic and chemotaxonomic identification of the bacterium of the genus Ochrobactrum possessing oil-oxidizing and nitrogen-fixing activity

Cited by 4 publications

References 36 publications

Effect of Freeze-Thaw on a Midtemperate Soil Bacterial Community and the Correlation Network of Its Members

Effect of Freeze-Thaw on a Midtemperate Soil Bacterial Community and the Correlation Network of Its Members

Exploring the effect of plant substrates on bacterial community structure in termite fungus-combs

Phytohormone Mediation of Interactions Between Plants and Non-Symbiotic Growth Promoting Bacteria Under Edaphic Stresses

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