scholarly journals Chemical Control of Grapevine Main Pathogens under the Climate Conditions of Baia

2012 ◽  
Vol 69 (1) ◽  
Author(s):  
Lucia MIHALESCU ◽  
Oana MARE ROSCA ◽  
Zorica VOSGAN ◽  
Anca DUMUTA ◽  
Mirela CORDEA ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Chemical Control ◽  
Plasmopara Viticola ◽  
Resistant Variety ◽  
Uncinula Necator ◽  
Climate Conditions ◽  
Chemical Protection ◽  
Baia Mare ◽  
Frequency Intensity

The experiences were performed in the Tautii Magheraus locality, located at 3 km from Baia Mare. Five variety of grapevine were studied: Cramposie , Feteasca regala , Muscat Ottonel  , Perla de Zala and Italian Riesling . The resistance of the cultivated grapevine varieties against the attack of the main phytopathogenic fungi: Plasmopara viticola , Uncinula necator , Botryotinia fuckeliana  , in terms of the 2011 year, was studied. In order to assess the resistance of the grapevine varieties against the phytopathogenic agents attack, the frequency, intensity and degree of attack were determined. The most sensitive to the attack of downy mildew on leaves was the Italian Riessling , with a degree of attack of 71.5%; and the most resistant variety was Perla de Zala , with a degree of attack of 26%. The most resistant to the attack of grape powdery mildew on leaves was the Muscat Ottonel  variety, with a degree of attack of 8.1%; and the most sensitive was the Italian Riesling variety with 18.1%. In case of the attack of downy mildew on grapes, the most sensitive was the Italian Riesling  variety with a degree of attack of 11.5%; and the most resistant was Perla de Zala with 2.5%. During the vegetation of the 2011 year, the chemical protection was performed with fungicides that were administered by seven sprayings.

scholarly journals Content of trans-resveratrol in leaves and berries of interspecific grapevine (Vitis sp.) varieties

2009 ◽  
Vol 26 (Special Issue) ◽  
pp. S13-S17 ◽  
Author(s):  
P. Bábíková ◽  
N. Vrchotová ◽  
J. Tříska ◽  
M. Kyseláková
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Plasmopara Viticola ◽  
Fungal Diseases ◽  
Uncinula Necator ◽  
Botryotinia Fuckeliana

The aim of this project was to study changes in the content of <i>trans</i>-resveratrol in berries and leaves of grapevine (<i>Vitis</i> sp.) infested by fungal diseases, especially by <i>Botryotinia fuckeliana</i> Whetzel, called as grey mildew, <i>Plasmopara viticola</i> (Berk. & M.A. Curtis) Berl & De Toni, called downy mildew and <i>Uncinula necator</i> (Schw.) Burr, called powdery mildew. In our experiments two white and two blue varieties were used. Contents of <i>trans</i>-resveratrol were determined in healthy and infested leaves and in healthy berries. Infested leaves of white varieties contained more <i>trans</i>-resveratrol than those of blue varieties. The content of <i>trans</i>-resveratrol in berries was lower than that in leaves.

scholarly journals Potential of genetic resistance of new table grape hybrids to fungal pathogens

2021 ◽  
Vol 34 ◽  
pp. 02001
Author(s):  
Elena Ilnitskaya ◽  
Marina Makarkina ◽  
Valeriy Petrov
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Resistance Genes ◽  
Dna Markers ◽  
Fungal Pathogens ◽  
Genetic Resistance ◽  
Plasmopara Viticola ◽  
Table Grape ◽  
Table Grapes ◽  
Hybrid Forms

Downy mildew (Plasmopara viticola) and powdery mildew (Erysiphe necator) are the most common and economically significant fungal diseases in vineyards. The task of this work is to study the genotypes of new promising hybrid forms of table grapes for the presence of resistance genes to downy mildew (Rpv10 and Rpv3) and powdery mildew (Ren9) using DNA-markers. The study was carried out on table grape hybrids under the working names Agat dubovskiy, Akelo, Arabella, Artek, Dubovskiy rozovyi, Gamlet, Ispolin, Kishmish dubovskiy, Kurazh, Pestryi, Valensiya and registered variety Liviya. The studied genes were analyzed using markers UDV305 and UDV737 (Rpv3), GF09-46 (Rpv10), CenGen6 (Ren9). The following cultivars were used as reference genotypes: Saperavi severnyi (carries Rpv10 gene) and Regent (Rpv3 and Ren9). It was established that Rpv3 gene is carried by hybrids Kishmish dubovskiy, Agat dubovskiy, Kurazh, Valensiya, Akelo, Gamlet, Dubovskiy rozovyi, Pestryi. Ren9 gene was found in Artek, Agat dubovskiy, Kurazh, Ispolin, Valensiya, Arabella, Gamlet, Dubovskiy rozovyi, Pestryi. The Rpv10 gene was not detected in any of the analyzed grapevine samples. genotypes Agat dubovskiy, Kurazh, Gamlet, Dubovskiy rozovyi, Pestryi, Valensiya carry Rpv3 and Ren9 genes simultaneously. These grapevines have an elegant bunch and large berries that are attractive to consumers.

scholarly journals Susceptibility of Cold-Climate Wine Grape Cultivars to Downy Mildew, Powdery Mildew, and Black Rot

Plant Disease ◽  
2017 ◽  
Vol 101 (7) ◽  
pp. 1077-1085 ◽  
Author(s):  
David S. Jones ◽  
Patricia S. McManus
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Management Strategies ◽  
Plasmopara Viticola ◽  
Cold Climate ◽  
Black Rot ◽  
Wine Grape ◽  
Plant Host ◽  
Northern United States ◽  
Grape Cultivars

Lack of knowledge regarding the susceptibility of cold-climate hybrid wine grape cultivars may be leading to the overuse of fungicides and underutilization of plant host resistance to combat disease in the northern United States. To provide new insights on diseases of cold-climate cultivars and to update management recommendations, disease was evaluated in three vineyards containing eight cultivars that were not sprayed with fungicides in 2015 and 2016. Disease severity or incidence of downy mildew (Plasmopara viticola), powdery mildew (Erysiphe necator), and black rot (Guignardia bidwellii) were measured from bud break until 2 weeks after harvest. Cold-climate cultivars ranged widely in susceptibility to different diseases and, although several cultivars were relatively resistant to two diseases, no cultivar was highly resistant to all three diseases. Additionally, a difference between foliar and fruit susceptibility for all three diseases was noted in several cultivars. These data provide a foundation for developing low-spray and certified organic disease management strategies for cold-climate wine grape cultivars based on susceptibility to disease.

scholarly journals Testing of paraffin oil efficiency against grape powdery mildew in Eger wine region

2016 ◽  
pp. 73-80
Author(s):  
Xénia Pálfi ◽  
Dénes Bisztray ◽  
Szabolcs Villangó ◽  
Zita Pálfi ◽  
Tamás Deák ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Plasmopara Viticola ◽  
Field Trials ◽  
Intensity Of Infection ◽  
Erysiphe Necator ◽  
Regular Treatment ◽  
Paraffin Oil ◽  
Wine Region ◽  
Grape Varieties

The aim of the present study was to examine the efficiency of paraffin oil against powdery mildew in Eger wine region. The experiment has been carried out in 2013 and 2014 with Chardonnay and Kékfrankos grape varieties, which have different resistance against powdery mildew. The effectiveness of the oil was examined on leaves and clusters (frequency and intensity). This oil was effective against Erysiphe necator infection on field trials in Chile and Brazil. The spread of downy mildew (Plasmopara viticola) was also inhibited by this material in some experiments conducted in Spain and France. The differences between oil treatments represented the sensitivity of the grape varieties in accordance with the applied dosages. The oil was effective against powdery mildew with different extent as a result of the so called ”vintage effect”. In 2013, the treatment of the highest dosage (D3) didn’t differed significantly in frequency and intensity of infection from the regular treatment (clusters of Kékfrankos, leaves of Chardonnay). In 2014, the oil was not so effective against powdery mildew compared to 2013. No remarkable differences were detected between the treatments due to the strong pressure of powdery mildew. Furthermore, no any effect of the lowest dosage (D1) was detected in the case of the sensitive clusters of Chardonnay and leaves of Kékfrankos in both experimental years. In summary, the oil treatment has an effect against powdery mildew, however this efficiency largely depends on the vintage characteristics and the pressure of powdery mildew. Further investigations are neccessary, for example field trials with combinations of other sprays. The oil can be useable as fungicide with proper care in eco-friendly integrated and bio (ecological) viticulture.

scholarly journals EVALUATION OF GRAPEVINE RESISTANCE TO DOWNY AND POWDERY MILDEW IN ‘REGENT’ × ‘BOĞAZKERE’ HYBRID POPULATION SEGREGATING FOR RESISTANCE GENES

2019 ◽  
Vol 18 (1) ◽  
pp. 181-188
Author(s):  
Mina Shidfar ◽  
Murat Akkurt ◽  
Arif Atak ◽  
Ali Ergül ◽  
Gökhan Söylemezoğlu
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Resistance Genes ◽  
Marker Assisted Selection ◽  
Plasmopara Viticola ◽  
Hybrid Population ◽  
Breeding Programs ◽  
The World ◽  
Genomic Regions ◽  
New Cultivars

Downy (Plasmopara viticola) and powdery mildew (Erysipha necator) is known as one of the most mischievous diseases for viticulture in Turkey as well as in the world. Therefore breeding studies play an important role for development of new cultivars resistant against fungal diseases. The aim of this research was to develop new F1 population and evaluate the resistance of hybrids to powdery and downy mildew via marker assisted selection (MAS). Resistant ‘Regent’ and susceptible ‘Boğazkere’ varieties were used to obtain hybrid population. A total of 6 markers belonging to 3 genomic regions were used for DNA based selection. Four SSR (UDV15, VMCNG2f12, VMC7F2 and UDV305) and two SCAR (ScORNA7-760 and ScORN3-R) markers which were developed to the resistance loci of Rpv3 and Ren3 were used for DNA based selection. The results were evaluated together with powdery mildew inoculation observations. When inoculation observations and MAS were evaluated, genotypes resistant, tolerant and susceptible to powdery and downy mildew were identified. Especially 16 genotypes identified as resistant to powdery mildew, can be used in future breeding programs.

scholarly journals Susceptibility to downy mildew (Plasmopara viticola) and powdery mildew (Erysiphe necator) of differentVitiscultivars and genotypes

2017 ◽  
Vol 32 (1) ◽  
pp. 23-32 ◽  
Author(s):  
Arif Atak ◽  
M. Akkurt ◽  
Z. Polat ◽  
H. Çelik ◽  
K. A. Kahraman ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Plasmopara Viticola ◽  
Erysiphe Necator

scholarly journals “The PLCP gene family of grapevine (Vitis vinifera L.): characterization and differential expression in response to Plasmopara Viticola”

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jun Kang ◽  
Peijie Gong ◽  
Mengqing Ge ◽  
Ehsan Sadeghnezhad ◽  
Zhongjie Liu ◽  
...  
Keyword(s):  
Gene Family ◽  
Downy Mildew ◽  
Plant Immunity ◽  
Cysteine Proteases ◽  
Plasmopara Viticola ◽  
Defense Responses ◽  
Resistant Variety ◽  
Downy Mildew Resistance ◽  
Mildew Resistance ◽  
Cis Acting

Abstract Background Papain-like cysteine proteases (PLCPs), a large group of cysteine proteases, are structurally related to papain. The members belonging to PLCPs family contribute to plant immunity, senescence, and defense responses in plants. The PLCP gene family has been identified in Arabidopsis, rice, soybean, and cotton. However, no systematic analysis of PLCP genes has been undertaken in grapevine. Since Plasmopara viticola as a destructive pathogen could affect immunity of grapes in the field, we considered that the members belonged to PLCPs family could play a crucial role in defensive mechanisms or programmed cell death. We aimed to evaluate the role of PLCPs in 2 different varieties of grapevines and compared the changes of their expressions with the transcriptional data in response to P. viticola. Results In this study, 23 grapevine PLCP (VvPLCP) genes were identified by comprehensive bioinformatics analysis. Subsequently, the chromosomal localizations, gene structure, conserved domains, phylogenetic relationship, gene duplication, and cis-acting elements were analyzed. Numerous cis-acting elements related to plant development, hormone, and stress responses were identified in the promoter of the VvPLCP genes. Phylogenetic analysis grouped the VvPLCP genes into nine subgroups. The transcription of VvPLCP in different inoculation time points and varieties indicated that VvPLCP may have vital functions in grapevine defense against Plasmopara viticola. According to transcriptome data and qPCR analysis, we observed the increasing expression levels of VvRD21–1 at 72 h after inoculation in resistant variety, inferring that it was related to grape downy mildew resistance. Meanwhile, 3 genes including VvXBCP1, VvSAG12–1, and VvALP1 showed higher expression at 24 h after pathogen inoculation in the susceptible variety and might be related to the downy mildew phenotype. We nominated these four genes to function during hypersensitive response (HR) process, inferring that these genes could be associated with downy mildew resistance in grapes. Conclusions Our results provide the reference for functional studies of PLCP gene family, and highlight its functions in grapevine defense against P. viticola. The results help us to better understand the complexity of the PLCP gene family in plant immunity and provide valuable information for future functional characterization of specific genes in grapevine.

ALLOCATION OF SOURCES AND DONORS OF ECONOMICALLY VALUABLE TRAITS FROM THE COLLECTION MATERIAL OF CUCUMBER TO CREATE HIGHLY PRODUCTIVE VARIETIES AND HYBRIDS

1970 ◽  
pp. 45-49
Author(s):  
N. V. Kulyakina ◽  
G. A. Kuzmitskaya ◽  
T. K. Yurechko
Keyword(s):  
Genetic Resources ◽  
Downy Mildew ◽  
Geographical Origin ◽  
Plant Genetic Resources ◽  
Eastern Region ◽  
Biotic And Abiotic Stress ◽  
Climate Conditions ◽  
Damage Degree ◽  
Economically Valuable Traits ◽  
Far Eastern

The downy mildew (peronosporosis) is the most dangerous and harmful cucumber disease in the Far-Eastern region. Its harmfulness is the highest during the period of flowering – fruiting, because it may completely ruin the cucumber plants both in open and protected ground. Use of cucumber sorts with effective genes that are resistant to the disease is the most efficient way to fight cucumber peronosporosis. In this connection the publication adduces the facts of study the sorts and hybrids of different ecological and geographical origin from the genetic resources collection of the N.I. Vavilov All-Russian Institute of Plant Genetic Resources (VIR) in comparison with three zoned sorts of DV NIISH selection – Mig, Khabar, Amurchonok. The aim of researches – to identify the sort samples cucumber according to the main economically valuable traits and also to the degree resistance of genetypes to the main disease of the culture in the region – downy mildew (peronosporosis), for allow to select the source material for the creation of sorts and hybrids, highly productive and resistant to biotic and abiotic stress environmental factors in the monsoon climate conditions of Khabarovsk region. The perspective genetypes having both the resistance to the diseases and productivity are not revealed as a result of the evaluation of the collection of cucumber samples according to their susceptibility by fungus diseases and productivity. Slavyanskiy (Belarus) is more resistant to peronosporosis, especially in 2016 year conditions, although it was inferior to the damage degree of disease to the zoned sorts – Mig, Khabar, Amurchonok. This perspective sample is planned to be used as a source of donors of the main economically valuable traits in a further selective work.

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