Salt stress and hydroxyectoine enhance phosphate solubilisation and plant colonisation capacity of Kosakonia radicincitans

Barrera, Fredy Mauricio Cruz; Jakobs-Schoenwandt, Desirée; Gómez, Martha Isabel; Becker, Matthias; Patel, Anant; Ruppel, Silke

doi:10.1016/j.jare.2019.03.012

Cited by 26 publications

(18 citation statements)

References 62 publications

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“…Los controles fueron analizados bajo las mismas condiciones experimentales. La actividad enzimática (U) se definió como microgramos de PNP liberado por mililitro por hora (µg/mL/h) (Barrera et al, 2019).…”

Section: Determinación De La Actividad Fosfatasas áCidasunclassified

Solubilización de fosfatos por bacterias del género Burkholderia aisladas de oxisoles de la altillanura colombiana

Moreno-Conn

Casallas

Barrera

2021

CTA

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Los oxisoles de la altillanura en Colombia contienen hasta 400 mg/kg de fósforo. Sin embargo, la fracción disponible para las plantas es inferior a 3,5 mg/kg, lo que obliga la suplementación con fertilizantes fosfóricos. Las plantas pueden adaptarse a estas condiciones por medio de interacciones con bacterias solubilizadoras de fosfatos (BSF) presentes en el suelo. Los oxisoles serían una potencial fuente de BSF; no obstante, existe un desconocimiento de su diversidad en la altillanura colombiana. El objetivo de esta investigación fue aislar, caracterizar e identificar BSF de oxisoles de la altillanura colombiana. A partir de muestras compuestas de suelo con cultivos transitorios y sabana, se obtuvieron 42 aislamientos. De estos, 14 cepas mostraron índices de solubilización de fosfatos entre 1,2 y 2,4. Las cepas M15 y M18 se seleccionaron por su alta actividad de las fosfatasas ácidas con 297,7 ± 89,6 y 638,3 ± 31,2 μg de p-nitrofenilfosfato/mL/h, respectivamente. Los dos aislamientos promovieron el crecimiento vegetal en plantas de arroz en condiciones de invernadero. Mediante la secuenciación parcial del gen 16S rRNA, las dos cepas fueron identificadas dentro del género Burkholderia. Esta investigación amplía el conocimiento de las BSF presentes en los oxisoles de la altillanura colombiana, así como sus capacidades para favorecer la disponibilidad de fósforo en el suelo y promover el crecimiento vegetal.

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Section: Determinación De La Actividad Fosfatasas áCidasunclassified

Solubilización de fosfatos por bacterias del género Burkholderia aisladas de oxisoles de la altillanura colombiana

Moreno-Conn

Casallas

Barrera

2021

CTA

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“…For instance, Schubert et al (2007) reported that the introduction of ectoine genes of a halophylic bacterium Chromohalobacter salexigens into a non-halophilic bacterium Escherichia coli leads to abundant synthesis of ectoine by this recombinant strain. Barrera et al (2019) showed that hydroxyectoine similarly to salt stress increases the solubility of phosphates and plant colonization capacity of Kosakonia radicincitans. Additionally, Lai et al (2014) demonstrated enhanced tolerance to drought and salt stresses in transgenic Arabidopsis expressing glycine betaine from halophilic methanarcheon Methanophilus portucalensis.…”

Section: Relationship Between Chemical Structure and Activity Of Compmentioning

confidence: 99%

“…Annunziata et al (2019);Barrera et al (2019); Che-Othman et al(2020); Ferreira et al (2015b); Hossain et al (2017); Iqbal et al (2015); Jawahar et al (2019); Kurepin et al (2015); Lai et al (2014); Maimaiti et al (2016); Majumdar et al (2016); Meena et al (2019); Panuszko et al (2016); Ramos-Ruiz et al (2019); Rejeb et al (2014); Shevyakova et al (2013); Singh et al (2017); Suprasanna et al (2016); Vicente et al (2016) (continued)…”

mentioning

confidence: 99%

Osmoprotectants and Nonenzymatic Antioxidants in Halophytes

Surówka

Hura

2020

Handbook of Halophytes

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Salt tolerance is a complex phenomenon leading to ionic imbalance, osmotic stress, and excessive generation of reactive oxygen species (ROS). Halophytes developed a range of adaptations to tolerate disturbances in their redox homeostasis caused by high salinity alone or by its combination with other stresses. Osmoprotectants are universal molecules whose chemical structure allows them for making efficient osmotic adjustments and exerting antioxidant activity. Combining these two abilities, they become effective molecules that prevent membrane injury and stabilize proteins/enzymes under high concentrations of salts or other harmful solutes. Components of antioxidant systems together with some osmoprotectants act as ROS regulating networks. Selected compatible solutes (carbohydrates, polyols, amino acids, betaines, polyamines, phenols) (i) allow for balancing ROS level and redox status, (ii) are involved in ROSdependent signaling pathways, and (iii) activate the osmotic response network under salt stress. Osmolytes are also sources of carbon, nitrogen, sulfur, and energy for cells. Through the interaction with other biocompounds and/or their involvement in different metabolic pathways/metabolic loops, they can modulate metabolic homeostasis, especially under environmental stresses, and thus affect plant salt tolerance.

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“…In certain cases, such as in banana (Musa acuminata) plantation, the inoculation of banana with Bacillus amyloliquefaciens and Pseudomonas fluorescens resulted in improved plant growth and altered the metabolome profile of the plant [2]. It was also observed that halotolerant bacteria Kosakonia radicincitans increased root-colonising capability and improved growth of radish plant [3]. The use plant growth promoting rhizobacteria, Bacillus subtilis, B. amyloliqufaciens, B. cereus, Pseudomonas putida, and P. fluorescens, were also shown to reduce the damage of tomato root by nematode [4].…”

Section: Introductionmentioning

confidence: 99%

Metabolome profile of osmotolerant rhizobacteria under osmotic stress

Surya¹,

Palupi²,

Yuwono³

et al. 2021

Advances in Biological Sciences Research

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An osmotolerant rhizobacteria (Enterococcus flavescens), isolated from the weed rhizosphere, has been subjected to osmotic stress in broth media supplemented with varied concentrations of glucose and sodium chloride (NaCl). The aims of this work was to evaluate the cells' response and obtain a comprehensive view of metabolites profiles under osmotic stress. Cells were grown in rich medium (Luria Bertani, LB) supplemented with NaCl at varying concentrations (0.5 M -1.8 M NaCl) and glucose (5% -20%), both as a single or double stress condition. Physiological response was observed by measuring rhizobacterial growth and analysing metabolite synthesised using GC-MS. The results of this study demonstrated that different concentration of salt and glucose resulted in different metabolite profiles. It was also observed that cells cultivated in LB + 1,6 M NaCl and LB + 1,8 M NaCl medium resulted in only two different compounds detected, i.e amide and fatty acid. Under double stress, however, concentration of hexadecanoic acid, hexadecenoic acid, proline and glycerin was found increased, while under single-salt and glucose stress, hexadecanoic acid and 9-octadecenoic acidmethyl ester were detected. Those two acid were absent from the cells' metabolites under double stress. The results of this study thus suggested that osmotic stress provokes different pathway of fatty acid metabolism. The metabolome profile of the rhizobacteria under stress condition may also reveal specific mechanism of microbial tolerance to osmotic stress under different condition. The possible mechanism and pathway of osmotic stress in microorganisms will be discussed.

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Salt stress and hydroxyectoine enhance phosphate solubilisation and plant colonisation capacity of Kosakonia radicincitans

Abstract: Graphical abstract

Cited by 26 publications

References 62 publications

Solubilización de fosfatos por bacterias del género Burkholderia aisladas de oxisoles de la altillanura colombiana

Solubilización de fosfatos por bacterias del género Burkholderia aisladas de oxisoles de la altillanura colombiana

Osmoprotectants and Nonenzymatic Antioxidants in Halophytes

Metabolome profile of osmotolerant rhizobacteria under osmotic stress

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