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Azospirillum brasilense and Saccharomyces cerevisiae as Alternative for Decrease the Effect of Salinity Stress in Tomato(Lycopersicon esculentum)Growth

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Phyton-International Journal of Experimental Botany 2022年第1期91卷 21-32页

作者： ali abdelmoteleb Daniel Gonzalez-Mendoza Ahmed Mohamed Elbaalawy Botany Department Faculty of AgricultureMenoufia UniversityShebin El-KomPo 32511Egypt Instituto de Ciencias Agrícolas Universidad Autónoma de Baja CaliforniaCarretera a Delta s/n Ejido Nuevo LeónBaja CaliforniaCP 21705México Department of Soil Science Faculty of AgricultureMenoufia UniversityShebin El-KomPo 32511Egypt

The salinity stress is one of the most relevant abiotic stresses that affects the agricultural *** present study was performed to study the improvement of the salt tolerance of tomato plants which is known for their susceptibility to salt *** present study aimed to assess to what extent strain Azospirillum brasilense(N040)and Saccharomyces cerevisiae improve the salt tolerance to tomato plants treated with different salt *** inoculant strain ***(N040)was previously adapted to survive up to 7%NaCl in the basal media.A greenhouse experiment was conducted to evaluate the effect of this inoculation on growth parameter such as:plant height,root length,fresh and dry weight,fruits fresh weight,chlorophyll content,proline and total soluble sugar in tomato plants under salt stress *** results revealed that co-inoculation of Azospirillum brasilense(N040)and Saccharomyces cerevisiae significantly increased the level of proline(8.63 mg/g FW)and total soluble sugar(120 mg/g FW)of leaves under salinity condition comparing to non-inoculated plants(2.3 mg/g FW and 70 mg/g FW,respectively).Plants co-inoculated with adapted strain of *** and *** showed the highest significant(paline soils.

关键词： Salinity stress tomato proline exopolysaccharides microorganism

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Green Synthesis of Silver Nanoparticles from Abronia villosa as an Alternative to Control of Pathogenic Microorganisms

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Journal of Renewable Materials 2020年第1期8卷 69-78页

作者： ali abdelmoteleb Benjamin Valdez-Salas Ernesto Beltran-Partida Daniel Gonzalez-Mendoza Botany Department Faculty of AgricultureMenoufia UniversityShebin El-Kom32511Egypt Instituto de Ingeniería de la Universidad Autónoma de Baja California MexicaliBaja California21100México Instituto de Ciencias Agrícolas de la Universidad Autónoma de Baja California(ICA-UABC) Ejido Nuevo LeónBaja California21705México

The aim of this study was to evaluate the antibacterial and antifungal activities of eco-friendly synthesized silver *** silver nanoparticles were synthesized by biological method using aqueous extract of Abronia *** of silver nanoparticles was confirmed by color change and characterized using UV-visible spectroscopy,scanning electron microscope(SEM),energy dispersive X-ray spectroscopy(EDX),dynamic light scattering(DLS),and zeta potential *** SEM analysis revealed the presence of spherical silver nanoparticles of the size range 21 to 33 *** silver nanoparticles were used to evaluate their antibacterial effects at different concentrations(25,50,75 and 100μg/ml)on gram negative and gram positive *** biggest halo zone was observed at 75 and 100μg/ml concentrations of silver nanoparticles against both gram positive and gram negative *** activity of biosynthesized silver nanoparticles was evaluated against seven different phytopathogenic *** showed high inhibition of radial growth toward all tested *** highest inhibition of fungal growth by AgNPs was recorded against Macrophomina phaseolina(86.06±0.92%).Biosynthesized AgNPs using plant extract are a promising to use safety for various biomedical and agricultural applications.

关键词： Antibacterial activity antifungal activity green synthesis

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