Improved growth and control of oxidative stress in plants of Festuca arundinacea exposed to hydrocarbons by the endophytic fungus Lewia sp.

Mendarte-Alquisira, Caliope; Gutiérrez-Rojas, M.; González‐Márquez, Humberto; Volke-Sepúlveda, Tania

doi:10.1007/s11104-016-3035-6

Cited by 19 publications

(24 citation statements)

References 41 publications

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“…As reported, metal toxicity leads to the suppression of POD ( Hossain and Komatsu, 2013 ; Xie et al, 2015 ; Wang et al, 2016 ). The high level of POD level in endophyte-treated plants under Ni stress is consistent with the findings of Yang et al (2015) , Jiang et al (2016) , and Mendarte-Alquisira et al (2016) , who observed a remarkable increase in the POD concentration of fungal-inoculated Robinia pseudoacacia L., S. nigrum , and Festuca arundinacea plants, respectively, in response to different heavy-metal treatments. POD is considered vital for the dismutation of H 2 O 2 to water and molecular oxygen.…”

Section: Discussionsupporting

confidence: 90%

Endophytic Paecilomyces formosus LHL10 Augments Glycine max L. Adaptation to Ni-Contamination through Affecting Endogenous Phytohormones and Oxidative Stress

et al. 2017

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This study investigated the Ni-removal efficiency of phytohormone-producing endophytic fungi Penicillium janthinellum, Paecilomyces formosus, Exophiala sp., and Preussia sp. Among four different endophytes, P. formosus LHL10 was able to tolerate up to 1 mM Ni in contaminated media as compared to copper and cadmium. P. formosus LHL10 was further assessed for its potential to enhance the phytoremediation of Glycine max (soybean) in response to dose-dependent increases in soil Ni (0.5, 1.0, and 5.0 mM). Inoculation with P. formosus LHL10 significantly increased plant biomass and growth attributes as compared to non-inoculated control plants with or without Ni contamination. LHL10 enhanced the translocation of Ni from the root to the shoot as compared to the control. In addition, P. formosus LHL10 modulated the physio-chemical apparatus of soybean plants during Ni-contamination by reducing lipid peroxidation and the accumulation of linolenic acid, glutathione, peroxidase, polyphenol oxidase, catalase, and superoxide dismutase. Stress-responsive phytohormones such as abscisic acid and jasmonic acid were significantly down-regulated in fungal-inoculated soybean plants under Ni stress. LHL10 Ni-remediation potential can be attributed to its phytohormonal synthesis related genetic makeup. RT-PCR analysis showed the expression of indole-3-acetamide hydrolase, aldehyde dehydrogenase for indole-acetic acid and geranylgeranyl-diphosphate synthase, ent-kaurene oxidase (P450-4), C13-oxidase (P450-3) for gibberellins synthesis. In conclusion, the inoculation of P. formosus can significantly improve plant growth in Ni-polluted soils, and assist in improving the phytoremediation abilities of economically important crops.

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Section: Discussionsupporting

confidence: 90%

Endophytic Paecilomyces formosus LHL10 Augments Glycine max L. Adaptation to Ni-Contamination through Affecting Endogenous Phytohormones and Oxidative Stress

et al. 2017

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“…Endophytes of all types have been shown to increase oxidative stress tolerance in plant hosts [ 27 , 65 , 66 ]. This increased oxidative stress tolerance is likely the result of ethylene production by endophytic microbes and the superoxide response by plant cells.…”

Section: Resultsmentioning

confidence: 99%

Chemical Interactions at the Interface of Plant Root Hair Cells and Intracellular Bacteria

2021

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In this research, we conducted histochemical, inhibitor and other experiments to evaluate the chemical interactions between intracellular bacteria and plant cells. As a result of these experiments, we hypothesize two chemical interactions between bacteria and plant cells. The first chemical interaction between endophyte and plant is initiated by microbe-produced ethylene that triggers plant cells to grow, release nutrients and produce superoxide. The superoxide combines with ethylene to form products hydrogen peroxide and carbon dioxide. In the second interaction between microbe and plant the microbe responds to plant-produced superoxide by secretion of nitric oxide to neutralize superoxide. Nitric oxide and superoxide combine to form peroxynitrite that is catalyzed by carbon dioxide to form nitrate. The two chemical interactions underlie hypothesized nutrient exchanges in which plant cells provide intracellular bacteria with fixed carbon, and bacteria provide plant cells with fixed nitrogen. As a consequence of these two interactions between endophytes and plants, plants grow and acquire nutrients from endophytes, and plants acquire enhanced oxidative stress tolerance, becoming more tolerant to abiotic and biotic stresses.

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“…Alcántara-Martínez, 2013). Una vez escarificadas, las semillas se desinfectaron a través de su lavado con detergente comercial marca Roma al 4% durante 30 min en agitación, después se hicieron 5 enjuagues de 1 min cada uno con agua destilada para eliminar el detergente y se colocaron en una solución de etanol al 70% por 2 min, finalmente, se sumergieron en una solución de hipoclorito de sodio (NaClO) al 2% marca Meyer por 50 min (Mendarte-Alquisira et al, 2016;Alcántara-Martínez, 2013); entre cada cambio las semillas se enjuagaron con agua destilada estéril. Una vez tratadas, las semillas se sembraron en cajas Petri con agar-agua (11 g/L; marca J.T.…”

Section: Tratamiento Y Germinación De Semillas De P Vulgaris En Condiciones In Vitrounclassified

“…Se revisó el efecto de cada cepa sobre el crecimiento vegetal a través de una inspección visual (análisis cualitativo) y de las siguientes variables cuantitativas: elongación del tallo (desde el hipocótilo hasta la punta apical de la planta como se observa en la Fig. 6.5.1), peso seco de raíz (PSr), peso seco de tallo (PSt) (sin considerar el peso de los cotiledones) y número de raíces, junto con determinaciones de peróxido de hidrógeno (H2O2) y peroxidasa (POX) (Mendarte-Alquisira et al, 2016;Alcántara-Martínez, 2013;Rojas-Loria, 2010). Para comprobar el establecimiento P-HE, se realizaron observaciones por microscopía electrónica de barrido (MEB), según se muestra en la sección 6.6 de Materiales y Métodos, junto con pruebas de endofiticidad para comprobar el crecimiento de M. robertsii.…”

Section: Pruebas Para Establecer La Relación P-heunclassified

“…La actividad G-POX se determinó en un lector de microplacas, a través del aumento en la absorbancia a 415 nm, considerando un ε de 16.8 mM -1 cm -1 (Maehly, 1954). Una unidad G-POX se definió como la cantidad de enzima que cataliza la formación de 1 mmol de tetra-guayacol por minuto a 26°C y pH 7 (Mendarte-Alquisira et al, 2016;Alcántara-Martínez, 2013).…”

Section: Peroxidasa Total (G-pox)unclassified

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Condiciones para establecer la relación phaseolus vulgaris - hongo entomopatógeno y su respuesta a estrés inducido por PEG

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Improved growth and control of oxidative stress in plants of Festuca arundinacea exposed to hydrocarbons by the endophytic fungus Lewia sp.

Cited by 19 publications

References 41 publications

Endophytic Paecilomyces formosus LHL10 Augments Glycine max L. Adaptation to Ni-Contamination through Affecting Endogenous Phytohormones and Oxidative Stress

Endophytic Paecilomyces formosus LHL10 Augments Glycine max L. Adaptation to Ni-Contamination through Affecting Endogenous Phytohormones and Oxidative Stress

Chemical Interactions at the Interface of Plant Root Hair Cells and Intracellular Bacteria

Condiciones para establecer la relación phaseolus vulgaris - hongo entomopatógeno y su respuesta a estrés inducido por PEG

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