Differential effects of salinity and osmotic stress on the plant growth-promoting bacterium Gluconacetobacter diazotrophicus PAL5

Oliveira, Marcos V. V. de; Intorne, Aline Chaves; Vespoli, Luciano de Souza; Madureira, Hérika C.; Leandro, Mariana Ramos; Pereira, Telma Nair Santana; Olivares, Fábio Lopes; Berbert-Molina, Marília Amorim; Filho, Gonçalo A. de Souza

doi:10.1007/s00203-015-1176-2

Cited by 18 publications

(9 citation statements)

References 36 publications

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“…Since we cultured many potentially pathogenic fungi from the plant material used in this study (B. U. Furtado, S. Szymańska, and K. Hrynkiewicz, unpublished work), we suggest that mitigation of excess oxidative stress by endophytic bacteria may be beneficial for the host. The greater frequency of oxidative stress response genes in root bacterial communities suggests that the plant response to bacteria is the more important source of stress than salinity, which is higher in shoots (58). However, why the genes involved in the rest of pathways are apparently more common in roots than in shoots still remains to be elucidated.…”

Section: Discussionmentioning

confidence: 99%

Bacterial and Fungal Endophytic Microbiomes ofSalicornia europaea

Furtado

Gołębiewski

Skorupa

et al. 2019

Appl Environ Microbiol

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We examined Salicornia europaea, a nonmycorrhizal halophyte associated with specific and unique endophytic bacteria and fungi. The microbial community structure was analyzed at two sites differing in salinization history (anthropogenic and naturally saline site), in contrasting seasons (spring and fall) and in two plant organs (shoots and roots) via 16S rRNA and internal transcribed spacer amplicon sequencing. We observed distinct communities at the two sites, and in shoots and roots, while the season was of no importance. The bacterial community was less diverse in shoot libraries than in roots, regardless of the site and season, whereas no significant differences were observed for the fungal community. Proteobacteria and Bacteroidetes dominated bacterial assemblages, and Ascomycetes were the most frequent fungi. A root core microbiome operational taxonomic unit belonging to the genus Marinimicrobium was identified. We detected a significant influence of the Salicornia bacterial community on the fungal one by means of cocorrespondence analysis. In addition, pathways and potential functions of the bacterial community in Salicornia europaea were inferred and discussed. We can conclude that bacterial and fungal microbiomes of S. europaea are determined by the origin of salinity at the sites. Bacterial communities seemed to influence fungal ones, but not the other way around, which takes us closer to understanding of interactions between the two microbial groups. In addition, the plant organs of the halophyte filter the microbial community composition. IMPORTANCE Endophytes are particularly fascinating because of their multifaceted lifestyle, i.e., they may exist as either free-living soil microbes or saprobic ones or pathogens. Endophytic communities of halophytes may be different than those in other plants because salinity acts as an environmental filter. At the same time, they may contribute to the host’s adaptation to adverse environmental conditions, which may be of importance in agriculture.

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Section: Discussionmentioning

confidence: 99%

Bacterial and Fungal Endophytic Microbiomes ofSalicornia europaea

Furtado

Gołębiewski

Skorupa

et al. 2019

Appl Environ Microbiol

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“…The effect of CHAP on the NaCl permeability of bacteria was detected as modified protocol as follows [31]. 100 μL of bacterial suspensions (1 × 10 6 CFU mL −1 ) with 1/2 × MIC of CHAP were added to 96-well plates and the bacterial suspensions with no CHAP as control.…”

Section: Methodsmentioning

confidence: 99%

Antimicrobial activity and safety evaluation of peptides isolated from the hemoglobin of chickens

Song

et al. 2016

BMC Microbiol

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BackgroundHemoglobin is a rich source of biological peptides. As a byproduct and even wastewater of poultry-slaughtering facilities, chicken blood is one of the most abundant source of hemoglobin.ResultsIn this study, the chicken hemoglobin antimicrobial peptides (CHAP) were isolated and the antimicrobial and bactericidal activities were tested by the agarose diffusion assay, minimum inhibitory concentration (MIC) analysis, minimal bactericidal concentration (MBC) analysis, and time-dependent inhibitory and bactericidal assays. The results demonstrated that CHAP had potent and rapid antimicrobial activity against 19 bacterial strains, including 9 multidrug-resistant bacterial strains. Bacterial biofilm and NaCl permeability assays, transmission electron microscopy (TEM) and scanning electron microscopy (SEM) were further performed to detect the mechanism of its antimicrobial effect. Additionally, CHAP showed low hemolytic activity, embryo toxicity, and high stability in different temperatures and animal plasma.ConclusionCHAP may have great potential for expanding production and development value in animal medication, the breeding industry and environment protection.Electronic supplementary materialThe online version of this article (doi:10.1186/s12866-016-0904-3) contains supplementary material, which is available to authorized users.

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“…Genome sequencing confirmed that Acetobacter sp. Pal5 was able to promote plant growth (Oliveira et al, 2016). Possibly due to its relatively small genome size, it has to dependent on its plant host closely to sustain life.…”

Section: The Ability Of Endophytic Bacteria On Nitrogen Fixationmentioning

confidence: 99%

The Role of Soil Microbes in Promoting Plant Growth

Li¹,

Peng²,

Liu³

et al. 2017

mmr

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More and more food is needed all over the world in order to meet rapidly growing population demands, while the modern agriculture on increasing output has already reached its limit. It is badly in need to cultivate new crop varieties for increase the yield and resistant to environmental stress and insects. However, crops are still need to provide the necessary fertilizer nutrients which is insufficient in soil. Recently, many evidences showed that soil microbes provide an opportunity for reducing agricultural demand in inorganic fertilizer. Microorganisms, due to their huge gene pool, are also used for a potential resource in biochemical reactions, which recycle nutrients for plant growth. Therefore, we need to modify and better use of soil microbiota to promote plant growth. In this review, we mainly summarized the role of soil microbiota by explaining the ecological balance, nitrogen fixation, nutrient elements, interactions and communication medium.

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Differential effects of salinity and osmotic stress on the plant growth-promoting bacterium Gluconacetobacter diazotrophicus PAL5

Cited by 18 publications

References 36 publications

Bacterial and Fungal Endophytic Microbiomes ofSalicornia europaea

Bacterial and Fungal Endophytic Microbiomes ofSalicornia europaea

Antimicrobial activity and safety evaluation of peptides isolated from the hemoglobin of chickens

The Role of Soil Microbes in Promoting Plant Growth

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