scholarly journals Incidence of Grapevine Leafroll Disease: Effects of Grape Mealybug (Pseudococcus maritimus) Abundance and Pathogen Supply

2018 ◽  
Vol 111 (4) ◽  
pp. 1542-1550 ◽  
Author(s):  
Monica L Cooper ◽  
Matthew P Daugherty ◽  
Daniel R Jeske ◽  
Rodrigo P P Almeida ◽  
Kent M Daane
Keyword(s):  
Grapevine Leafroll Disease ◽  
Leafroll Disease ◽  
Pseudococcus Maritimus

scholarly journals Mealybug Transmission of Grapevine Leafroll Viruses: An Analysis of Virus–Vector Specificity

2010 ◽  
Vol 100 (8) ◽  
pp. 830-834 ◽  
Author(s):  
Chi-Wei Tsai ◽  
Adib Rowhani ◽  
Deborah A. Golino ◽  
Kent M. Daane ◽  
Rodrigo P. P. Almeida
Keyword(s):  
Plant Pathogens ◽  
Phylogenetic Analyses ◽  
Virus Vector ◽  
Disease Spread ◽  
Virus Species ◽  
Vector Species ◽  
Vector Transmission ◽  
Planococcus Ficus ◽  
Grapevine Leafroll Disease ◽  
Leafroll Disease

To understand ecological factors mediating the spread of insect-borne plant pathogens, vector species for these pathogens need to be identified. Grapevine leafroll disease is caused by a complex of phylogenetically related closteroviruses, some of which are transmitted by insect vectors; however, the specificities of these complex virus–vector interactions are poorly understood thus far. Through biological assays and phylogenetic analyses, we studied the role of vector-pathogen specificity in the transmission of several grapevine leafroll-associated viruses (GLRaVs) by their mealybug vectors. Using plants with multiple virus infections, several virus species were screened for vector transmission by the mealybug species Planococcus ficus and Pseudococcus longispinus. We report that two GLRaVs (-4 and -9), for which no vector transmission evidence was available, are mealybug-borne. The analyses performed indicated no evidence of mealybug–GLRaV specificity; for example, different vector species transmitted GLRaV-3 and one vector species, Planococcus ficus, transmitted five GLRaVs. Based on available data, there is no compelling evidence of vector–virus specificity in the mealybug transmission of GLRaVs. However, more studies aimed at increasing the number of mealybug species tested as vectors of different GLRaVs are necessary. This is especially important given the increasing importance of grapevine leafroll disease spread by mealybugs in vineyards worldwide.

scholarly journals Transmission of Grapevine Leafroll Viruses by Planococcus ficus (Hemiptera: Pseudococcidae) and Ceroplastes rusci (Hemiptera: Coccidae)

Plant Disease ◽  
2009 ◽  
Vol 93 (10) ◽  
pp. 999-1002 ◽  
Author(s):  
N. Mahfoudhi ◽  
M. Digiaro ◽  
M. H. Dhouibi
Keyword(s):  
Scale Insect ◽  
Experimental Conditions ◽  
Planococcus Ficus ◽  
Soft Scale ◽  
First Report ◽  
Grapevine Leafroll Disease ◽  
Adult Females ◽  
Leafroll Disease

Grapevine leafroll associated virus-3 (GLRaV-3) and Grapevine leafroll associated virus-5 (GLRaV-5), two members of the genus Ampelovirus associated with grapevine leafroll disease, were transmitted by the mealybug Planococcus ficus and the soft scale insect Ceroplastes rusci from infected to healthy vines under experimental conditions. The efficiencies of transmission of GLRaV-3 and GLRaV-5 by P. ficus were 23.3 and 8.3%, respectively, and by C. rusci were 3.3 and 1.7%, respectively. Juvenile instars of P. ficus were more efficient in transmission of the viruses than adult females. This is the first report of the ability of C. rusci to transmit these viruses to grapevines.

scholarly journals Impacts of Grapevine Leafroll Disease on Fruit Yield and Grape and Wine Chemistry in a Wine Grape (Vitis vinifera L.) Cultivar

PLoS ONE ◽  
2016 ◽  
Vol 11 (2) ◽  
pp. e0149666 ◽  
Author(s):  
Olufemi J. Alabi ◽  
L. Federico Casassa ◽  
Linga R. Gutha ◽  
Richard C. Larsen ◽  
Thomas Henick-Kling ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Fruit Yield ◽  
Vitis Vinifera L ◽  
Wine Grape ◽  
Grapevine Leafroll Disease ◽  
Leafroll Disease

scholarly journals Natural spread of grapevine leafroll disease and Grapevine leafroll-associated virus 3.

2006 ◽  
Vol 72 (3) ◽  
pp. 143-145 ◽  
Author(s):  
H. NASU ◽  
J. IMADA ◽  
K. INOUE ◽  
R. NAKAUNE ◽  
T. SHIMANE ◽  
...  
Keyword(s):  
Grapevine Leafroll Disease ◽  
Natural Spread ◽  
Leafroll Disease

scholarly journals Gill's mealybug, Ferrisia gilli, can Transmit Grapevine Leafroll-associated Virus-3 after a 24-hour Acquisition Time

2020 ◽  
Vol 9 (2) ◽  
pp. 139-144
Author(s):  
Taylor Jones ◽  
Mizuho Nita
Keyword(s):  
Virus Disease ◽  
Rapid Expansion ◽  
Scale Insects ◽  
Acquisition Time ◽  
Feeding Period ◽  
Limited Information ◽  
The World ◽  
Leafroll Disease ◽  
Pseudococcus Maritimus ◽  
Disease Present

Grapevine leafroll disease (GLD) is a virus disease present in all grapevine-growing regions of the world. Mealybugs and scale insects have been reported as vectors of some grapevine leafroll-associated viruses belongs to the ampeloviruses (family Closteroviridae) in particular with grapevine leafroll-associated virus-1 (GLRaV-1) and GLRaV-3. Both grape (Pseudococcus maritimus) and Gill’s mealybugs are commonly present in Virginia vineyards, but we have limited information on acquisition and transmission of GLRaV-3 by Gill's mealybug (Ferrisia Gilli). We conducted acquisition and transmission assays in the greenhouse to examine the threshold for shorter acquisition time of GLRaV-3 with F. gilli. Approximately 67% and 58% rates of GLRaV-3 acquisition by F. gilli following 24 and 48 hours, respectively, of feeding period were documented. F. gilli first instars fed on a GLRaV-3-positive grapevine for 24 and 48 hours successfully transmitted GLRaV-3 to healthy grapevines after 24 hours of feeding/transmission time. The quick acquisition demonstrated in this study could be one of the factors that promoted the rapid expansion of GLRaV-3-infected vines in vineyards documented in previous studies.

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