scholarly journals Susceptibility to flavescence dorée of different Vitis vinifera genotypes from north‐western Italy

2020 ◽  
Author(s):  
Matteo Ripamonti ◽  
Mattia Pegoraro ◽  
Cristina Morabito ◽  
Ivana Gribaudo ◽  
Andrea Schubert ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Flavescence Dorée ◽  
North Western

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 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 Flavescence dorée phytoplasma affecting grapevine (Vitis vinifera) newly reported in Portugal

2010 ◽  
Vol 59 (2) ◽  
pp. 398-398 ◽  
Author(s):  
E. de Sousa ◽  
P. Casati ◽  
F. Cardoso ◽  
C. Baltazar ◽  
G. Durante ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Flavescence Dorée

scholarly journals Contrasting Susceptibilities to Flavescence Dorée in Vitis vinifera, Rootstocks and Wild Vitis Species

2016 ◽  
Vol 7 ◽  
Author(s):  
Sandrine Eveillard ◽  
Camille Jollard ◽  
Fabien Labroussaa ◽  
Dima Khalil ◽  
Mireille Perrin ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Vitis Species ◽  
Flavescence Dorée

Methyl jasmonate triggers metabolic responses and gene expression on Vitis vinifera cultivar Loureiro infected with “flavescence dorée”

2019 ◽  
Vol 9 (1) ◽  
pp. 165
Author(s):  
Manuel J.R.A. Oliveira ◽  
Marta W. Vasconcelos ◽  
Inês C. Lemos ◽  
Assunta Bertaccini ◽  
Susana M.P. Carvalho
Keyword(s):  
Gene Expression ◽  
Vitis Vinifera ◽  
Methyl Jasmonate ◽  
Metabolic Responses ◽  
Flavescence Dorée ◽  
Vinifera Cultivar

scholarly journals Non-anthocyanin polyphenols in healthy and Flavescence dorée infected Barbera and Nebbiolo leaves

2019 ◽  
Vol 13 ◽  
pp. 03003 ◽  
Author(s):  
Alessandra Ferrandino ◽  
Chiara Pagliarani ◽  
Olga Kedrina-Okutan ◽  
Sara Icardi ◽  
Marco Bove ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
North West ◽  
Flavescence Dorée ◽  
Caftaric Acid ◽  
Scaphoideus Titanus ◽  
Quercetin Glycosides ◽  
Different Levels

The first serious outbreak of Flavescence dorée (FD) in Piedmont (North-West Italy) dates back to 1998 in the Tortona area (Alessandria province). FD is a serious quarantine-worthy disease transmitted by the leafhopper Scaphoideus titanus Ball. Different Vitis vinifera L. biotypes react differently to the phytoplasma, in particular as to the accumulation of polyphenols in leaves. In this experimentation, we observed and described concentration and accumulation of the main classes of polyphenols in entire leaves and in leaf blades and veins of two varieties, Nebbiolo and Barbera, displaying different levels of susceptibility to FD. Their well-known different reactions could be related, at least partially, to leaf polyphenols, both as to concentrations and profiles. Nebbiolo displayed some specific traits: i) the higher percentage of incidence over totals of individual molecules known to be powerful antioxidants (caftaric acid over coutaric acid; quercetin glycosides over other flavonols); ii) the higher concentration of flavanols in veins with respect to Barbera and their wider profile (astilbin and a taxifolin-glycoside, this last accumulating exclusively in Nebbiolo).

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