scholarly journals Flavescence Dorée-Derived Leaf Yellowing in Grapevine (Vitis vinifera L.) Is Associated to a General Repression of Isoprenoid Biosynthetic Pathways

2020 ◽  
Vol 11 ◽  
Author(s):  
António Teixeira ◽  
Viviana Martins ◽  
Sarah Frusciante ◽  
Telmo Cruz ◽  
Henrique Noronha ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Biosynthetic Pathways ◽  
Flavescence Dorée ◽  
Leaf Yellowing

scholarly journals Recovery of Vitis vinifera L. cv. ‘Kékfrankos’ from ‘bois noir’ disease

2019 ◽  
Vol 156 (3) ◽  
pp. 987-991
Author(s):  
Anikó Mátai ◽  
Péter Teszlák ◽  
Gábor Jakab
Keyword(s):  
Gas Exchange ◽  
Vitis Vinifera ◽  
Photosynthetic Performance ◽  
Photochemical Quenching ◽  
Vitis Vinifera L ◽  
Bois Noir ◽  
Flavescence Dorée ◽  
Exchange Performance ◽  
Concentration Changes ◽  
Non Photochemical Quenching

AbstractInvestigation of diseases caused by phytoplasmas, a group of cell-wall-less gram-positive bacteria has received significant attention in plant pathology. Grapevine is a host of two, genetically distinct phytoplasmas: Line Flavescence dorée (FD) phytoplasma associated to ‘flavescence dorée’ and ‘Candidatus Phytoplasma solani’ responsible for ‘bois noir’ (BN) disease. In the current study, we focused on BN diseased grapevines (Vitis vinifera L. cv. ‘Kékfrankos’), measured their photosynthetic performance and leaf hydrogen peroxide (H2O2) concentration. The latter is generally considered as a key molecule in the process of ‘recovery’ which is a spontaneous and unpredictable long-term remission of disease symptoms. This phenomenon also occurred during the time of our experiment. Infection resulted in reduced gas exchange performance and maximum quantum efficiency of PSII with an increased regulated non-photochemical quenching of PSII and H2O2 concentration. Changes in gas exchange seem to be a systemic response, while reduced photochemistry is a local response to ‘Ca. P. solani’ infection. H2O2 accumulation in BN phytoplasma infected plants, unlike in FD disease, was found to be a typical response to the appearance of a biotic stressor.

scholarly journals Metabolic Consequences of Infection of Grapevine (Vitis vinifera L.) cv. “Modra frankinja” with Flavescence Dorée Phytoplasma

2016 ◽  
Vol 7 ◽  
Author(s):  
Nina Prezelj ◽  
Elizabeth Covington ◽  
Thomas Roitsch ◽  
Kristina Gruden ◽  
Lena Fragner ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Flavescence Dorée

On the role of H2O2 in the recovery of grapevine (Vitis vinifera cv. Prosecco) from Flavescence dorée disease

2007 ◽  
Vol 34 (8) ◽  
pp. 750 ◽  
Author(s):  
Rita Musetti ◽  
Rosita Marabottini ◽  
Maurizio Badiani ◽  
Marta Martini ◽  
Luigi Sanità di Toppi ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Vitis Vinifera ◽  
Membrane Lipids ◽  
Thiobarbituric Acid ◽  
Polymerase Chain Reaction Analysis ◽  
Antioxidant Systems ◽  
Vitis Vinifera L ◽  
Flavescence Dorée ◽  
Significant Difference ◽  
Leaf Tissues

In the present work, we compared hydrogen peroxide (H2O2) localisation and the activities/contents of antioxidant enzymes and metabolites in the leaf tissues of grapevine (Vitis vinifera L. cv. Prosecco) plants showing different sanitary status, namely diseased by Flavescence dorée, healthy or recovered. Polymerase chain reaction analysis revealed that the pathogen associated with Flavescence dorée (proposed as ‘Candidatus Phytoplasma vitis’) was detected in the leaf tissues of symptomatic plants, but was not observed in either the healthy or recovered plants. Hydrogen peroxide accumulated in the phloem plasmalemma of recovered grapevine leaves, but was not detected in either healthy or diseased material. When compared to diseased or healthy plants, recovered plants had distinctly lower extractable levels of catalase and ascorbate peroxidase, two enzymes primarily involved in the scavenging of excess H2O2 generated in different cell compartments. Among healthy, diseased and recovered leaves there was no significant difference in the amount of 2-thiobarbituric acid-reactive substances, which are assumed to reflect the extent of peroxidative breakdown of membrane lipids. Therefore, it is suggested that recovery from Flavescence dorée disease in grapevine might be associated with a long-term, sustained and tissue-specific accumulation of H2O2 in leaves, which reduces numbers or prevents further infection by Flavescence dorée phytoplasma. Recovered grapevine plants might be able to achieve such H2O2 accumulation through a selective and presumably stable downregulation of enzymatic H2O2 scavengers, without altering the levels of other antioxidant systems and without incurring an increased oxidative risk.

Development, Spatial Distribution, and Presence on Grapevine of Nymphs of Orientus ishidae (Hemiptera: Cicadellidae), a New Vector of Flavescence Dorée Phytoplasmas

2019 ◽  
Vol 112 (6) ◽  
pp. 2558-2564 ◽  
Author(s):  
Federico Lessio ◽  
Federico Bocca ◽  
Alberto Alma
Keyword(s):  
Spatial Distribution ◽  
Embryonic Development ◽  
Vitis Vinifera ◽  
Power Law ◽  
Host Plants ◽  
Vitis Vinifera L ◽  
Field Sampling ◽  
Egg Hatching ◽  
Flavescence Dorée ◽  
Field And Laboratory Conditions

Abstract Orientus ishidae (Matsumura) (subfamily Deltocephalinae) is an Asian species now widespread in Europe, and a vector of 16SrV phytoplasmas agents of grapevine Flavescence dorée (FDP). Embryonic and post-embryonic development, spatial distribution, and relationships with grapevine of nymphs were studied under field and laboratory conditions. Egg-hatching dynamics and post-embryonic development of nymphs were studied by collecting grapevine wood from managed and unmanaged vineyards (including bot European Vitis vinifera L., and wild American rootstocks) and storing it inside rearing cages at T = 21–23°C. Field sampling of nymphs were made on both grapevine and two elective host plants of O. ishidae: hazelnut and hornbeam. Taylor’s Power Law was applied to assess the aggregation coefficient of early- (first and second) and late- (third to fifth) life instars on leaves and shoots of host plants. More nymphs were obtained from wood collected in unmanaged rather than managed vineyards. Under lab conditions, the embryonic development lasted 34–48 d, whereas the whole post-embryonic development averaged 27 d. Under field conditions, early instars peaked at the end of May, and late instars peaked 2–4 wk later. The aggregation patterns decreased from early to late instars, and from leaves to shoots. Very few nymphs were observed on unmanaged grapevine, either European or American, and none on managed European grapevine. Some behavioral and FDP epidemiological consequences of the results obtained are discussed.

scholarly journals Transmission of 16SrV phytoplasmas by Scaphoi-deus titanus Ball in northern Italy

2001 ◽  
Vol 37 (No. 2) ◽  
pp. 49-56 ◽  
Author(s):  
P.A. Bianco ◽  
A. Alma ◽  
P. Casati ◽  
G. Scattini ◽  
A. Arzone
Keyword(s):  
Vitis Vinifera ◽  
Vicia Faba ◽  
Northern Italy ◽  
Vitis Vinifera L ◽  
Veneto Region ◽  
Experimental Transmission ◽  
Flavescence Dorée ◽  
Scaphoideus Titanus ◽  
Elm Yellows

Flavescence dorée (FD) has been defined as the disease that is caused by a phytoplasmas belonging to group 16SrV (elm yellows) and transmitted to plants by the insect Scaphoideus titanus Ball. We investigated transmission of FD agent by S. titanus in a vineyard located in Veneto region to determine which phytoplasma(s) may be transmitted in this region. Group 16SrV-C phytoplasma was detected and identified in field-collected S. titanus adults, in plant of grapevine (Vitis vinifera L. cv. Gamay) and broadbean (Vicia faba cv. Arlŕ) that had been fed upon by the insects. No evidence of experimental transmission of phytoplasma belonging to 16SrI-B subgroup phytoplasma by S. titanus has been observed.

Resveratrol oligomers from Vitis Vinifera L. stems

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
H Amira-Guebailia ◽  
T Richard ◽  
S Rouaiguia ◽  
P Waffo Tueguo ◽  
JC Delaunay ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L
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