Soil Acidobacteria Strain AB23 Resistance to Oxidative Stress Through Production of Carotenoids

Pinto, Otávio Henrique Bezerra; Costa, Flávio Silva; Rodrigues, Gisele Regina; Costa, Rosiane Andrade da; Fernandes, Gabriel da Rocha; Júnior, Osmindo Rodrigues Pires; Barreto, Cristine Chaves

doi:10.1007/s00248-020-01548-z

Cited by 15 publications

(8 citation statements)

References 58 publications

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“…Moreover, Acidobacteria are one of the most dominant phyla in diverse soil habitats, representing 5–50% of the total bacterial community ( Lee et al, 2008 ; Foesel et al, 2014 ; Dedysh and Damsté, 2018 ), and their genome possesses a comprehensive physiological set of genes that allow them to adapt to various ecological niches, enabling them to participate in carbon usage, nitrogen assimilation, metabolism of iron, Antimicrobial activities, abundance of transporters, oxygen and hydrogen utilization, stress and starvation response, and secondary metabolite biosynthesis ( Kielak et al, 2009 ; Eichorst et al, 2018 ; Kalam et al, 2020 ). Acidobacteria also contribute to promoting plant growth and protecting against phytopathogens by producing phytohormone indole-3-acetic acid (IAA), siderophores, as well as carotenoids ( Wang et al, 2014 ; Kielak et al, 2016 ; Pinto et al, 2021 ). Several studies showed that Acidobacteria act as slow-acting decomposers of plant-, fungi-, and insect-derived polymers ( Dedysh and Yilmaz, 2018 ).…”

Section: Discussionmentioning

confidence: 99%

Influence of plant genotype and soil on the cotton rhizosphere microbiome

Yang

Yue

et al. 2022

Front. Microbiol.

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Rhizosphere microbial communities are recognized as crucial products of intimate interactions between plant and soil, playing important roles in plant growth and health. Enhancing the understanding of this process is a promising way to promote the next green revolution by applying the multifunctional benefits coming with rhizosphere microbiomes. In this study, we propagated eight cotton genotypes (four upland cotton cultivars and four sea-land cotton cultivars) with varying levels of resistance to Verticillium dahliae in three distinct soil types. Amplicon sequencing was applied to profile both bacterial and fungal communities in the rhizosphere of cotton. The results revealed that soil origin was the primary factor causing divergence in rhizosphere microbial community, with plant genotype playing a secondary role. The Shannon and Simpson indices revealed no significant differences in the rhizosphere microbial communities of Gossypium barbadense and G. hirsutum. Soil origin accounted for 34.0 and 59.05% of the total variability in the PCA of the rhizosphere bacterial and fungal communities, respectively, while plant genotypes within species only accounted for 1.1 to 6.6% of the total variability among microbial population. Similar results were observed in the Bray–Curtis indices. Interestingly, the relative abundance of Acidobacteria phylum in G. barbadense was greater in comparison with that of G. hirsutum. These findings suggested that soil origin and cotton genotype modulated microbiome assembly with soil predominantly shaping rhizosphere microbiome assembly, while host genotype slightly tuned this recruitment process by changing the abundance of specific microbial consortia.

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Section: Discussionmentioning

confidence: 99%

Influence of plant genotype and soil on the cotton rhizosphere microbiome

Yang

Yue

et al. 2022

Front. Microbiol.

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“…Certain Acidobacteria members are equipped with the genes responsible for the dissimilatory reduction of nitrite to ammonia (nrfHA), which not only provides energy supply but also aids in the detoxification of nitrosative stress (Rajeev et al, 2015;Eichorst et al, 2018). A very recent study by Pinto et al (2020) reported that carotenoid production by Occallatibacter sp. (belonging to Acidobacteria subdivision 1) can confer tolerance to environmental oxidative stress.…”

Section: Genes Regulating Stress and Starvation Responsementioning

confidence: 99%

“…Involvement in carbon cycle King and Weber, 2007;Banerjee et al, 2016;García-Fraile et al, 2016;Belova et al, 2018;Dedysh and Damsté, 2018 Involvement in nitrogen cycle Ward et al, 2009;Rajeev et al, 2015;Eichorst et al, 2018 Involvement in sulfur cycle Wasmund et al, 2017;Hausmann et al, 2018 Involvement in plant growth promotion Kielak et al, 2016b;Kalam et al, 2017a Involvement as "keystone taxa" Banerjee et al, 2016;Jiang et al, 2017;Li et al, 2017;Banerjee et al, 2018 Involvement in soil matrix formation Kielak et al, 2016a;Kielak et al, 2017 Establishment of biofilms Ward et al, 2009;Kielak et al, 2016a;Kielak et al, 2016b Production of exopolysaccharides Ward et al, 2009;Rawat et al, 2012a;Kielak et al, 2017 Biosynthesis of secondary metabolites Ward et al, 2009;Parsley et al, 2011;Hadjithomas et al, 2015;Damsté et al, 2017;Crits-Christoph et al, 2018 Tolerance to stress, starvation, and acidity Ward et al, 2009;Challacombe et al, 2011;Morris and Schmidt, 2013;Greening et al, 2015;Rajeev et al, 2015;Eichorst et al, 2018;Domeignoz-Horta et al, 2019;Pinto et al, 2020 Presence of mobile genetic elements Frost et al, 2005;…”

Section: Salient Features Referencesmentioning

confidence: 99%

Recent Understanding of Soil Acidobacteria and Their Ecological Significance: A Critical Review

et al. 2020

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Acidobacteria represents an underrepresented soil bacterial phylum whose members are pervasive and copiously distributed across nearly all ecosystems. Acidobacterial sequences are abundant in soils and represent a significant fraction of soil microbial community. Being recalcitrant and difficult-to-cultivate under laboratory conditions, holistic, polyphasic approaches are required to study these refractive bacteria extensively. Acidobacteria possesses an inventory of genes involved in diverse metabolic pathways, as evidenced by their pan-genomic profiles. Because of their preponderance and ubiquity in the soil, speculations have been made regarding their dynamic roles in vital ecological processes viz., regulation of biogeochemical cycles, decomposition of biopolymers, exopolysaccharide secretion, and plant growth promotion. These bacteria are expected to have genes that might help in survival and competitive colonization in the rhizosphere, leading to the establishment of beneficial relationships with plants. Exploration of these genetic attributes and more in-depth insights into the belowground mechanics and dynamics would lead to a better understanding of the functions and ecological significance of this enigmatic phylum in the soil-plant environment. This review is an effort to provide a recent update into the diversity of genes in Acidobacteria useful for characterization, understanding ecological roles, and future biotechnological perspectives.

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“…However, the high concentration of denitrifying bacteria presented in the diseased soil prevented further nitrification of NH 2 OH, leading to nitrogen N losses by forming NO and NO 2 which are released into the atmosphere as greenhouse gasses and thus contribute to environmental pollution. The high intensity of the nxrA gene in the diseased soil may be due to the resistance effects of soil bacteria to environmental stress ( Xiao et al, 2017 ; Pinto et al, 2020 ). The copies of the nxrA gene in both the diseased and healthy soil were much lower than those of the remaining nitrogen metabolic genes, probably because nitrite is easily oxidized and does not require too many microbes to participate in the reaction process.…”

Section: Discussionmentioning

confidence: 99%

Ralstonia solanacearum Infection Disturbed the Microbiome Structure Throughout the Whole Tobacco Crop Niche as Well as the Nitrogen Metabolism in Soil

Wang

Zhang

et al. 2022

Front. Bioeng. Biotechnol.

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Infections of Ralstonia solanacearum result in huge agricultural and economic losses. As known, the proposal of effective biological measures for the control of soil disease depends on the complex interactions between pathogens, soil microbiota and soil properties, which remains to be studied. Previous studies have shown that the phosphorus availability increased pathobiome abundance and infection of rhizosphere microbial networks by Ralstonia. Similarly, as a nutrient necessary for plant growth, nitrogen has also been suggested to be strongly associated with Ralstonia infection. To further reveal the relationship between soil nitrogen content, soil nitrogen metabolism and Ralstonia pathogens, we investigated the effects of R. solanacearum infection on the whole tobacco niche and its soil nitrogen metabolism. The results demonstrated that Ralstonia infection resulted in a reduction of the ammonium nitrogen in soil and the total nitrogen in plant. The microbes in rhizosphere and the plant’s endophytes were also significantly disturbed by the infection. Rhodanobacter which is involved in nitrogen metabolism significantly decreased. Moreover, the load of microbial nitrogen metabolism genes in the rhizosphere soil significantly varied after the infection, resulting in a stronger denitrification process in the diseased soil. These results suggest that the application management strategies of nitrogen fertilizing and a balanced regulation of the rhizosphere and the endophytic microbes could be promising strategies in the biological control of soil-borne secondary disasters.

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Soil Acidobacteria Strain AB23 Resistance to Oxidative Stress Through Production of Carotenoids

Cited by 15 publications

References 58 publications

Influence of plant genotype and soil on the cotton rhizosphere microbiome

Influence of plant genotype and soil on the cotton rhizosphere microbiome

Recent Understanding of Soil Acidobacteria and Their Ecological Significance: A Critical Review

Ralstonia solanacearum Infection Disturbed the Microbiome Structure Throughout the Whole Tobacco Crop Niche as Well as the Nitrogen Metabolism in Soil

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