First report of oospore formation in Plasmopara viticola , the causal agent of grapevine downy mildew, in highland regions of southern Brazil

2021 ◽  
Author(s):  
Camila Bitencourt ◽  
Patricia Maria O. Pierre ◽  
Felipe A. M. F. Pinto ◽  
Paulo Cesar Poeta Fermino‐Junior ◽  
Beatriz Ribeiro Gomes ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Plasmopara Viticola ◽  
Causal Agent ◽  
Southern Brazil ◽  
First Report ◽  
Grapevine Downy Mildew ◽  
Oospore Formation

scholarly journals Microsatellite Markers for Characterization of Native and Introduced Populations of Plasmopara viticola, the Causal Agent of Grapevine Downy Mildew

2012 ◽  
Vol 78 (17) ◽  
pp. 6337-6340 ◽  
Author(s):  
Mélanie Rouxel ◽  
Daciana Papura ◽  
Marilise Nogueira ◽  
Virginie Machefer ◽  
Damien Dezette ◽  
...  
Keyword(s):  
Population Genetics ◽  
Microsatellite Markers ◽  
Downy Mildew ◽  
North American ◽  
Plasmopara Viticola ◽  
Causal Agent ◽  
Content Type ◽  
Grapevine Downy Mildew ◽  
Introduced Populations

ABSTRACTWe reported 31 microsatellite markers that have been developed from microsatellite-enriched and direct shotgun pyrosequencing libraries ofPlasmopara viticola, the causal agent of grapevine downy mildew. These markers were optimized for population genetics applications and used to characterize 96P. viticolaisolates from three European and three North American populations.

scholarly journals Characterization of Single-Nucleotide-Polymorphism Markers for Plasmopara viticola, the Causal Agent of Grapevine Downy Mildew

2011 ◽  
Vol 77 (21) ◽  
pp. 7861-7863 ◽  
Author(s):  
F. Delmotte ◽  
V. Machefer ◽  
X. Giresse ◽  
S. Richard-Cervera ◽  
M. P. Latorse ◽  
...  
Keyword(s):  
Single Nucleotide Polymorphism ◽  
Downy Mildew ◽  
Expressed Sequence Tag ◽  
Plasmopara Viticola ◽  
Snp Markers ◽  
Causal Agent ◽  
Nucleotide Polymorphism ◽  
Single Nucleotide ◽  
Content Type ◽  
Grapevine Downy Mildew

ABSTRACTWe report 34 new nuclear single-nucleotide-polymorphism (SNP) markers that have been developed from an expressed sequence tag library ofPlasmopara viticola, the causal agent of grapevine downy mildew. This newly developed battery of markers will provide useful additional genetic tools for population genetic studies of this important agronomic species.

scholarly journals FUNGITOXICITY OF ESSENTIAL OILS ON PLASMOPARA VITICOLA,CAUSAL AGENT OF GRAPEVINE DOWNY MILDEW

2017 ◽  
Vol 39 (4) ◽  
Author(s):  
RÉGIS DE OLIVEIRA FIALHO ◽  
MARLI DE FÁTIMA STRADIOTO PAPA ◽  
ALAN RODRIGO PANOSSO ◽  
ANA MARIA RODRIGUES CASSIOLATO
Keyword(s):  
Essential Oils ◽  
Downy Mildew ◽  
Eucalyptus Globulus ◽  
Direct Contact ◽  
Plasmopara Viticola ◽  
Causal Agent ◽  
Antifungal Effect ◽  
Grapevine Downy Mildew ◽  
The Third ◽  
Fungistatic Activity

ABSTRACT This study aimed to evaluate the fungitoxic (antifungal) effect of seven essential oils on Plasmopara viticola, the causal agent of grapevine downy mildew. The cinnamon, eucalyptus globulus, marjoram, melaleuca, peppermint, oregano and white thyme essential oils were compared with the mancozeb + metalaxyl-M fungicide. Three experiments were conducted to evaluate the effect of essential oils on spore germination. The first experiment evaluated the effect of direct contact of essential oils on the pathogen; the second evaluated the effect of volatile compounds on the pathogen and the third assessed the behavior of essential oils, when applied to vine leaves in field conditions, on the pathogen. All essential oils inhibited the spores’ germination, but in varying degrees, in addition, presenting fungistatic activity. All the essential oils showed chemical instability when the incubation time or the interval between products application where increased, all oils decrease antifungal activity percentage. Noteworthy, the cinnamon and the eucalyptus globulus essential oils were the most fungitoxic (antifungal) on P. viticola.

scholarly journals A High-Quality Grapevine Downy Mildew Genome Assembly Reveals Rapidly Evolving and Lineage-Specific Putative Host Adaptation Genes

2019 ◽  
Vol 11 (3) ◽  
pp. 954-969 ◽  
Author(s):  
Yann Dussert ◽  
Isabelle D Mazet ◽  
Carole Couture ◽  
Jérôme Gouzy ◽  
Marie-Christine Piron ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Genome Assembly ◽  
Population Genomics ◽  
Plasmopara Viticola ◽  
Plant Diseases ◽  
Host Specialization ◽  
Grapevine Downy Mildew ◽  
Downy Mildews ◽  
Genes Encoding ◽  
High Level

Abstract Downy mildews are obligate biotrophic oomycete pathogens that cause devastating plant diseases on economically important crops. Plasmopara viticola is the causal agent of grapevine downy mildew, a major disease in vineyards worldwide. We sequenced the genome of Pl. viticola with PacBio long reads and obtained a new 92.94 Mb assembly with high contiguity (359 scaffolds for a N50 of 706.5 kb) due to a better resolution of repeat regions. This assembly presented a high level of gene completeness, recovering 1,592 genes encoding secreted proteins involved in plant–pathogen interactions. Plasmopara viticola had a two-speed genome architecture, with secreted protein-encoding genes preferentially located in gene-sparse, repeat-rich regions and evolving rapidly, as indicated by pairwise dN/dS values. We also used short reads to assemble the genome of Plasmopara muralis, a closely related species infecting grape ivy (Parthenocissus tricuspidata). The lineage-specific proteins identified by comparative genomics analysis included a large proportion of RxLR cytoplasmic effectors and, more generally, genes with high dN/dS values. We identified 270 candidate genes under positive selection, including several genes encoding transporters and components of the RNA machinery potentially involved in host specialization. Finally, the Pl. viticola genome assembly generated here will allow the development of robust population genomics approaches for investigating the mechanisms involved in adaptation to biotic and abiotic selective pressures in this species.

scholarly journals First Report of Downy Mildew Caused by Plasmopara viticola on Vitis ficifolia var. sinuata in Korea

Plant Disease ◽  
2017 ◽  
Vol 101 (11) ◽  
pp. 1958-1958
Author(s):  
Y. J. Choi ◽  
S. E. Cho ◽  
H. D. Shin
Keyword(s):  
Downy Mildew ◽  
Plasmopara Viticola ◽  
First Report

scholarly journals Isolation of Plasmopara viticola from Grapevine Leaves

Proceedings ◽  
2019 ◽  
Vol 29 (1) ◽  
pp. 34
Author(s):  
Camelia Ungureanu ◽  
Liliana Cristina Soare ◽  
Diana Vizitiu ◽  
Mirela Calinescu ◽  
Irina Fierascu ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Plasmopara Viticola ◽  
Grapevine Downy Mildew ◽  
Grapevine Leaves ◽  
Downy Mildew Disease

In order to test some biofungicides, the isolation of Plasmopara viticola was carried out.Plasmopara viticola is a fungus that causes the grapevine downy mildew disease [...]

scholarly journals Identification of the First Oomycete Mating-type Locus Sequence in the Grapevine Downy Mildew Pathogen, Plasmopara viticola

2020 ◽  
Vol 30 (20) ◽  
pp. 3897-3907.e4 ◽  
Author(s):  
Yann Dussert ◽  
Ludovic Legrand ◽  
Isabelle D. Mazet ◽  
Carole Couture ◽  
Marie-Christine Piron ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Mating Type ◽  
Plasmopara Viticola ◽  
Type Locus ◽  
Grapevine Downy Mildew ◽  
Mating Type Locus

scholarly journals Draft Genome Sequence of Plasmopara viticola , the Grapevine Downy Mildew Pathogen

2016 ◽  
Vol 4 (5) ◽  
Author(s):  
Yann Dussert ◽  
Jérôme Gouzy ◽  
Sylvie Richart-Cervera ◽  
Isabelle D. Mazet ◽  
Laurent Delière ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Genome Sequence ◽  
Genome Analysis ◽  
Plant Pathogen ◽  
Host Resistance ◽  
Draft Genome ◽  
Plasmopara Viticola ◽  
Host Specialization ◽  
Grapevine Downy Mildew ◽  
Plant Pathogen Interactions

Plasmopara viticola is a biotrophic pathogenic oomycete responsible for grapevine downy mildew. We present here the first draft of the P. viticola genome. Analysis of this sequence will help in understanding plant-pathogen interactions in oomycetes, especially pathogen host specialization and adaptation to host resistance.

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