scholarly journals Trichoderma harzianum T-22 Induces Systemic Resistance in Tomato Infected by Cucumber mosaic virus

2016 ◽  
Vol 7 ◽  
Author(s):  
Antonella Vitti ◽  
Elisa Pellegrini ◽  
Cristina Nali ◽  
Stella Lovelli ◽  
Adriano Sofo ◽  
...  
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Trichoderma Harzianum ◽  
Systemic Resistance

scholarly journals THE PORIFERASTA COMPOUND-5,22E,25-TRIEN-3-Oβ FROM Clerodendrum paniculatum LEAF AS INDUCER AGENT OF SYSTEMIC RESISTANCE ON RED CHILLI PLANT Capsicum annuum L FROM CUCUMBER MOSAIC VIRUS (CMV

2010 ◽  
Vol 9 (3) ◽  
pp. 487-490
Author(s):  
Weny Musa ◽  
Hersanti Hersanti ◽  
Achmad Zainuddin ◽  
Roekmi-ati Tjokronegoro
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Capsicum Annuum ◽  
1H Nmr ◽  
13C Nmr ◽  
Spectroscopic Data ◽  
2D Nmr ◽  
Systemic Resistance ◽  
Inhibition Activity ◽  
Chilli Plant

The poriferasta-5.22E.25-trien-3β-ol compound of leaves of this plant Clerodendrum paniculatum has activity as an inducer agent of plant systemic resistance of red plant toward Cucumber Mosaic Viruses (CMV), the inhibition activity compound shows 82% inhibition activity at 300 ppm. The structure of these compound were determined on the basis of spectroscopic data including UV, IR, 1H-NMR, 13C-NMR and 2D-NMR   Keywords: Poriferasta-5.22E.25-trien-3β-ol, Clerodendrum paniculatum, induction of systemic resistance, CMV

scholarly journals Bacillus velezensis PEA1 Inhibits Fusarium oxysporum Growth and Induces Systemic Resistance to Cucumber Mosaic Virus

Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1312 ◽  
Author(s):  
Ahmed Abdelkhalek ◽  
Said I. Behiry ◽  
Abdulaziz A. Al-Askar
Keyword(s):  
Antiviral Activity ◽  
Fusarium Oxysporum ◽  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Plant Pathogens ◽  
Plant Diseases ◽  
Mass Spectrometry Analysis ◽  
Systemic Resistance ◽  
Bacillus Velezensis ◽  
Antiviral Activities

Bacillus velezensis manifests robust biocontrol activity against fungal plant pathogens; however, its antiviral activity has rarely been investigated. Bacillus velezensis strain PEA1 was isolated, characterized, and evaluated for antifungal and antiviral activities against Fusarium oxysporum MT270445 and cucumber mosaic virus (CMV) MN594112. Our findings proved that strain PEA1 had intense antagonist activity against F.oxysporum. Under greenhouse conditions, the antiviral activities (protective, curative, and inactivation) of PEA1-culture filtrate (CF) on Datura stramonium plants were assayed, using a half-leaf method. The inactivation treatment exhibited the highest inhibition rate (97.56%) and the most considerable reduction of CMV-CP accumulation levels (2.1-fold) in PEA1-CF-treated plants when compared with untreated plants (26.9-fold). Furthermore, PEA1-CF induced systemic resistance with significantly elevated transcriptional levels of PAL, CHS, HQT, PR-1, and POD genes in D. stramonium leaves after all treatments. Gas chromatography‒mass spectrometry analysis showed that pyrrolo[1,2-a]pyrazine-1,4-dione is the main compound in the PEA1-CF ethyl acetate extract, which may act as an elicitor molecule that induces plant systemic resistance and inhibits both fungal growth and viral replication. Consequently, B. velezensis can be considered as a potential source for the production of bioactive compounds for the management of plant diseases. To our knowledge, this is the first report of the antiviral activity of B. velezensis against plant viral infection.

Beneficial effects of Trichoderma harzianum T-22 in tomato seedlings infected by Cucumber mosaic virus (CMV)

BioControl ◽  
2014 ◽  
Vol 60 (1) ◽  
pp. 135-147 ◽  
Author(s):  
Antonella Vitti ◽  
Esther La Monaca ◽  
Adriano Sofo ◽  
Antonio Scopa ◽  
Ann Cuypers ◽  
...  
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Trichoderma Harzianum ◽  
Beneficial Effects ◽  
Tomato Seedlings

scholarly journals A Cucumber Mosaic Virus (CMV) RNA 1 Transgene Mediates Suppression of the Homologous Viral RNA 1 Constitutively and Prevents CMV Entry into the Phloem

2001 ◽  
Vol 75 (19) ◽  
pp. 9114-9120 ◽  
Author(s):  
Tomas Canto ◽  
Peter Palukaitis
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Tobacco Rattle Virus ◽  
Resistance Mechanism ◽  
Systemic Infection ◽  
Viral Rna ◽  
Systemic Resistance ◽  
Long Distance ◽  
Steady State Levels ◽  
Rna Accumulation

ABSTRACT Resistance to Cucumber mosaic virus (CMV) in tobacco lines transformed with CMV RNA 1 is characterized by reduced virus accumulation in the inoculated leaf, with specific suppression of accumulation of the homologous viral RNA 1, and by the absence of systemic infection. We show that the suppression of viral RNA 1 occurs in protoplasts from resistant transgenic plants and therefore is not due to a host response activated by the cell-to-cell spread of virus. In contrast, suppression of Tobacco rattle virus vectors carrying CMV RNA 1 sequences did not occur in protoplasts from resistant plants. Furthermore, steady-state levels of transgene mRNA 1 were higher in resistant than in susceptible lines. Thus, the data indicate that sequence homology is not sufficient to induce suppression. Grafting experiments using transgenic resistant or susceptible rootstocks and scions demonstrated that the resistance mechanism exhibited an additional barrier to phloem entry, preventing CMV from moving a long distance in resistant plants. On the other hand, virus from susceptible rootstocks could systemically infect grafted resistant scions via the phloem. Analysis of viral RNA accumulation in the infected scions showed that the mechanism that suppresses the accumulation of viral RNA 1 at the single-cell level was overcome. The data indicate that this transgene-mediated systemic resistance probably is not based on a posttranscriptional gene-silencing mechanism.

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