Chromogenicity of aerobic spore-forming bacteria of the Bacillaceae family isolated from different ecological niches and physiographic zones

Хархота, М. А.; Hrabova, H; Kharchuk, Maksym; Ivanytsia, Tetiana; Mozhaieva, L; Poliakova, A; Авдєєва, Л. В.

doi:10.1007/s42770-022-00755-9

Cited by 4 publications

(1 citation statement)

References 61 publications

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“…The proportion of pigmented bacteria, including those with carotenoid presence, in the Bacillaceae family in the bottom sediments was significantly higher in samples from regions with a high radiation background, as a result of the Chernobyl nuclear power plant (ChNPP) accident, compared to areas not contaminated with radionuclides. Additionally, the increase in radiation background levels led to a significant growth (by 69.7%) in the proportion of bacilli capable of synthesizing multiple types of pigments [342]. Conversely, the loss of the ability to synthesize carotenoids due to mutation significantly reduced the radioresistance of Deinococcus radiodurans, as noted by [343].…”

Section: Redox Activity and Antioxidant Defense Systemsmentioning

confidence: 99%

Taxonomic Diversity and Functional Traits of Soil Bacterial Communities under Radioactive Contamination: A Review

Belykh,

Maystrenko,

Velegzhaninov

et al. 2024

Microorganisms

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Studies investigating the taxonomic diversity and structure of soil bacteria in areas with enhanced radioactive backgrounds have been ongoing for three decades. An analysis of data published from 1996 to 2024 reveals changes in the taxonomic structure of radioactively contaminated soils compared to the reference, showing that these changes are not exclusively dependent on contamination rates or pollutant compositions. High levels of radioactive exposure from external irradiation and a high radionuclide content lead to a decrease in the alpha diversity of soil bacterial communities, both in laboratory settings and environmental conditions. The effects of low or moderate exposure are not consistently pronounced or unidirectional. Functional differences among taxonomic groups that dominate in contaminated soil indicate a variety of adaptation strategies. Bacteria identified as multiple-stress tolerant; exhibiting tolerance to metals and antibiotics; producing antioxidant enzymes, low-molecular antioxidants, and radioprotectors; participating in redox reactions; and possessing thermophilic characteristics play a significant role. Changes in the taxonomic and functional structure, resulting from increased soil radionuclide content, are influenced by the combined effects of ionizing radiation, the chemical toxicity of radionuclides and co-contaminants, as well as the physical and chemical properties of the soil and the initial bacterial community composition. Currently, the quantification of the differential contributions of these factors based on the existing published studies presents a challenge.

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Section: Redox Activity and Antioxidant Defense Systemsmentioning

confidence: 99%

Taxonomic Diversity and Functional Traits of Soil Bacterial Communities under Radioactive Contamination: A Review

Belykh,

Maystrenko,

Velegzhaninov

et al. 2024

Microorganisms

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Physico-chemical properties of Priestia endophytica UCM B-5715 fluorescent pigments

Kharkhota,

Kharchuk,

Kharchuk

et al. 2024

Biochemical and Biophysical Research Communications

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Colouration of the uropygial secretion in starling nestlings: a possible role of bacteria in parent-offspring communication

Martínez-Renau,

Martín-Platero,

Barón

et al. 2024

Proc. R. Soc. B.

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The use of cosmetic substances in communication is widespread in animals. Birds, for instance, use their uropygial secretion as a cosmetic in scenarios of sexual selection and parent-offspring communication. This secretion harbours symbiotic bacteria that could mediate the synthesis of pigments for cosmetic colouration. Here, we investigate the association between bacteria and the conspicuous yellow secretion used by spotless starling ( Sturnus unicolor ) nestlings to stain their mouths, and hypothesize a possible role of bacteria in the colour production. We also experimentally explore how nestling oxidizing condition influences the microbiota, suggesting that the possible bacterial-mediated coloured secretion acts as a reliable honest signal. An antioxidant supplementation experiment, previously known to affect secretion and mouth colouration, was conducted to assess its impact on the microbial community of secretions from control and experimental siblings. Antioxidant supplementation increased richness and phylogenetic diversity of the secretion’s microbiota. Moreover, the microbiota’s alpha and beta diversity, and the abundance of two bacterial genera ( Parabacteroides and Pseudogracilibacillus ), correlated with secretion colour. These findings demonstrate that antioxidant condition influences the gland microbiota of starling nestlings, and suggest a link between bacteria and the colouration of their cosmetic secretion. Alternative explanations for the detected links between bacteria and colouration are discussed.

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Chromogenicity of aerobic spore-forming bacteria of the Bacillaceae family isolated from different ecological niches and physiographic zones

Cited by 4 publications

References 61 publications

Taxonomic Diversity and Functional Traits of Soil Bacterial Communities under Radioactive Contamination: A Review

Taxonomic Diversity and Functional Traits of Soil Bacterial Communities under Radioactive Contamination: A Review

Physico-chemical properties of Priestia endophytica UCM B-5715 fluorescent pigments

Colouration of the uropygial secretion in starling nestlings: a possible role of bacteria in parent-offspring communication

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