Induction of Resistance in Tomato Plants Against Tomato mosaic tobamovirus Using Beneficial Microbial Isolates

Megahed, A.A.; KhA, El-Dougdoug; Ba, Othman; Lashin, S. M.; Ibrahim, Mona E.; Ar, Sofy

doi:10.3923/pjbs.2013.385.390

Cited by 18 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first is that it reduces osmotic stress by increasing osmolyte concentrations and phytohormone signals like indole-3-acetic acid (IAA) and gibberellic acid (GA3) (Zhang et al, 2020). The second goal is to achieve ion homeostasis and improve nutritional absorption in order to reduce ion stress and nutrient deficiency (Assaha et al, 2017;Megahed et al, 2013). The third objective is to reduce oxidative stress by increasing photosynthetic capacity (Wang et al, 2020).…”

Section: Academicpresmentioning

confidence: 99%

Dual inoculation of Bradyrhizobium and Enterobacter alleviates the adverse effect of salinity on Glycine max seedling

Agha

Abbas

Sofy

et al. 2021

Not Bot Horti Agrobo

View full text Add to dashboard Cite

The aid of beneficial microbes, which is a well-accepted strategy, may improve plant salt tolerance. However, the mechanisms that underpin it are unclear. In this study, seedling experiments were carried out to assess the effect of Bradyrhizobium and Enterobacter on the germination, growth, nonenzymatic and enzymatic content in soybean (Glycine max L.) under salt stress. Water was sprayed on the seeds as a control, and with 75 mM, 150 mM NaCl as salt stress. The findings demonstrate that salt stress (75, 150 mM) caused a significant decrease in germination, morphological criteria, and membrane stability index (MSI) when compared to control seeds but increased lipid peroxidation (MDA), electrolyte leakage (EL), osmotic pressure, proline, citric acid, sugar content, antioxidant enzymes. Furthermore, endophytic Bradyrhizobium and Enterobacter inoculation resulted in a significant rise in all of the above metrics.; however, these treatments resulted in significant reductions in ROS, EL, and MDA in stressed plants. Finally, the findings showed that combining Bradyrhizobium and Enterobacter was the most efficient in reducing the harmful effects of salt on soybean plants by boosting antioxidant up-regulation and lowering membrane leakage and ROS.

show abstract

Section: Academicpresmentioning

confidence: 99%

Dual inoculation of Bradyrhizobium and Enterobacter alleviates the adverse effect of salinity on Glycine max seedling

Agha

Abbas

Sofy

et al. 2021

Not Bot Horti Agrobo

View full text Add to dashboard Cite

show abstract

“…In addition, the mean growth inhibition percentage was about 100 for all fungal isolates. Also, ZnO-NPs may have antiviral activity against several types of viruses such as Cucumovirus and tobamovirus, and treat many of viral diseases such as Fruit Tree Viroid Diseases, Citrus Gummy Bark Disease and Potato Spindle Tuber Viroid [74][75][76][77][78] . Other researchers successfully prepared a new compound called polyquaternary phosphonium oligochitosans (PQPOCs) to be used as a natural synergistically bio reductant compound to reduce silver (Ag + ) ions into silver nanoparticles and as a stabilizing factor for these silver nanoparticles to manufacture PQPOCs-AgNPs Nano-biocompunds for use as an antiviral 79 .…”

Section: Antimicrobial Property (Antibacterial and Antifungal Activity)mentioning

confidence: 99%

Preparation of Zinc Oxide Nanoparticles using Aspergillus niger as Antimicrobial and Anticancer Agents

Mekky¹,

Farrag²,

Hmed³

et al. 2021

J. Pure Appl. Microbiol.

View full text Add to dashboard Cite

In the current study, zinc oxide nanoparticles (ZnO-NP) were prepared using extracellular extracts of Aspergillus niger. Hence, the morphological structure, optical, and surface features of the synthesized nanoparticles were studied by X-ray diffraction, transmission electron microscopy, ultraviolet-visible and infrared absorption by Fourier transform. Use dynamic light scattering and zeta potential measurements to assess colloidal stability. The mean size of the synthetic particles is approximately 20 ± 5 nm and they have a hexagonal crystal structure. In addition, the prepared nanoparticles have strong light absorption in the ultraviolet region of λ = 265 and 370 nm. To achieve the goal of this study, the efficiency of ZnO-NP was determined as an antibacterial and antifungal against different bacterial and fungal strains. It was found that ZnO-NP showed significant antibacterial activity, where the inhibition zones were varied from 21 to 35mm in diameter against six bacterial species (i.e. K. pneumoniae, E. coli, A. baumannii, P. aeruginosa, S. aureus, and S. haemolyticus). In such a case, the minimal inhibitory concentration of zinc oxide nanoparticles against bacterial strains were 50, 12.5, 12.5, 50, 12.5, and 12.5μg/ml for K. pneumoniae, E. coli, A. baumannii, P. aeruginosa, S. aureus, and S. haemolyticus, respectively. Furthermore, ZnO-NP exhibits an antifungal behaviour against four fungal species (i.e., A. niger, P. marneffei, C. glabrata, and C. parapsilosis) with inhibition zone from 18 to 35mm in diameter. Whereas, the MICs for fungal isolates were 12.5μg/ml except A. niger was at 25μg/ml. Wi-38 cells were treated with ZnO-NPs exhibited different levels of cytotoxicity dependent upon the concentration of ZnO NPs using the MTT assay with IC50~800.42. Therefore, the present study introduces a facile and cost-effective extracellular green-synthesis of ZnO-NP to be used as antimicrobial and anticancer agents.

show abstract

“…Tobamovirus is the largest genus in the family Virgaviridae [11,12]. Belonging to this genus, ToMV is a disease agent with a linear single-stranded RNA genome and has rod-shaped virions.…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity of CMV and ToMV Isolates in Tomato and Pepper Production Areas in Hakkari, Turkey

AKDURA

Kiliç

2022

Preprint

View full text Add to dashboard Cite

Background Tomato (Lycopersicum esculentum Mill.) and pepper (Capsicum anuum L.) are the host species for the Cucumber mosaic virus (CMV) and Tomato mosaic virus (ToMV). This article aims to report the detection of serolocigally and molecularly and identification of genetic diversity these viruses in Hakkari province, Turkey.Methods and results A total of 184 leaf samples were collected from tomato and pepper plants that showed virus-like symptoms. Sample collection was carried out in Hakkari province in October, 2020. CMV and ToMV factors were investigated by Double Antibody Sandwich Enzyme-Linked Immunosorbent Assay (DAS-ELISA). DAS-ELISA test showed that 106 (57.60%) of the samples were infected with one or more viruses. For phylogenetic analyses, 10 samples which were positive for CMV and ToMV were tested using Reverse Transcription Polymerase Chain Reaction (RT-PCR) method. Coat protein (CP) and replicase genes of Hakkari CMV and ToMV isolates were amplified by RT-PCR using specific primers. The resulting DNA sequences were deposited in NCBI GenBank (Accession Nos: OM286731, OM286732, OM286733, OM286734, OM418629). When the replicase and coat protein gene sequences of four ToMV isolates and one CMV isolate were compared with the isolates in GenBank, a nucleotide homology of 98.1-99.6% and 91.7-99.4% were found, respectively. Phylogenetic analysis revealed a strong similarity between Hakkari ToMV and CMV isolates and other Turkish isolates. Consistent with the molecular studies conducted in Turkey on CMV and ToMV, the isolates detected in this study also clustered in subgroup Ia. Conclusions With this study, CMV and ToMV factors were serologically and molecularly detected for the first time in Hakkari and the first nation-wide report for ToMV replicase sequences in infected tomato and peppers were submitted.

show abstract

Induction of Resistance in Tomato Plants Against Tomato mosaic tobamovirus Using Beneficial Microbial Isolates

Cited by 18 publications

References 0 publications

Dual inoculation of Bradyrhizobium and Enterobacter alleviates the adverse effect of salinity on Glycine max seedling

Dual inoculation of Bradyrhizobium and Enterobacter alleviates the adverse effect of salinity on Glycine max seedling

Preparation of Zinc Oxide Nanoparticles using Aspergillus niger as Antimicrobial and Anticancer Agents

Genetic Diversity of CMV and ToMV Isolates in Tomato and Pepper Production Areas in Hakkari, Turkey

Contact Info

Product

Resources

About