Photosynthetic Performance of Pinot gris ( Vitis vinifera L.) Grapevine Leaves in Response to Potato Leafhopper ( Empoasca fabae Harris) Infestation

2012 ◽  
Vol 63 (3) ◽  
pp. 357-366 ◽  
Author(s):  
Marcel S. Lenz ◽  
Rufus Isaacs ◽  
James A. Flore ◽  
G. Stanley Howell
Keyword(s):  
Vitis Vinifera ◽  
Photosynthetic Performance ◽  
Potato Leafhopper ◽  
Vitis Vinifera L ◽  
Empoasca Fabae ◽  
Grapevine Leaves

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.

Effect of the herbicide flumioxazin on photosynthetic performance of grapevine (Vitis vinifera L.)

Chemosphere ◽  
2007 ◽  
Vol 67 (6) ◽  
pp. 1243-1251 ◽  
Author(s):  
Aurélie Bigot ◽  
Florence Fontaine ◽  
Christophe Clément ◽  
Nathalie Vaillant-Gaveau
Keyword(s):  
Vitis Vinifera ◽  
Photosynthetic Performance ◽  
Vitis Vinifera L

scholarly journals Cooking impact in color, pigments and volatile composition of grapevine leaves (Vitis vinifera L. var. Malvasia Fina and Touriga Franca)

2017 ◽  
Vol 221 ◽  
pp. 1197-1205 ◽  
Author(s):  
Adriano Lima ◽  
José Alberto Pereira ◽  
Ilton Baraldi ◽  
Ricardo Malheiro
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Volatile Composition ◽  
Grapevine Leaves

scholarly journals Translocation and Partitioning Patterns of 14C Photoassimilate from Light- and Shade-adapted Shoots in Greenhouse-grown `Chardonnay' Grapevines (Vitis vinifera L.)

2002 ◽  
Vol 127 (6) ◽  
pp. 912-918 ◽  
Author(s):  
Justine E. Vanden Heuvel ◽  
Evangelos D. Leonardos ◽  
John T.A. Proctor ◽  
K. Helen Fisher ◽  
J. Alan Sullivan
Keyword(s):  
Vitis Vinifera ◽  
Soluble Fraction ◽  
Water Soluble ◽  
Light Environment ◽  
Vitis Vinifera L ◽  
Sink Strength ◽  
Water Soluble Fraction ◽  
Initial Carbon ◽  
Sink Effect ◽  
Grapevine Leaves

Potted `Chardonnay' grapevines (Vitis vinifera L.) with either two or three shoots were grown in a greenhouse for one month and then transferred to a phytotron room, where either one or two shoots were shaded. Twenty-four days after transfer, leaves at the fifth node of either the light-adapted or shade-adapted shoot were exposed to a 2-hour pulse of 14CO2. Both light environment and number of shade shoots on the vine had a significant effect on photosynthate partitioning within the plant following a 22-hour chase. Leaves fed with 14CO2 on a light-adapted shoot translocated 26.1% and 12.7% more radioactivity to the roots and trunk, respectively, than leaves from shade-adapted shoots. Photosynthates were exported from light-adapted leaves to shade-adapted shoots (1.3% of total 14C in plant). The number of shaded shoots and the light environment of the fed leaf had a large effect on partitioning of photosynthates among ethanol-insoluble, water-soluble, and chloroform-soluble fractions within the leaf. Recovered 14C in the water-soluble fraction of the fed leaf appeared to be affected more by number of shoots than by light environment of the fed leaf. The data suggest that there is a sink effect on initial carbon partitioning patterns in grapevine leaves. Sink strength may have a greater role than light environment. A large proportion of interior leaves versus exterior leaves may be costly with respect to the carbohydrate budget of a vine.

Évolution des teneurs en polyamines libres et conjuguées dans les feuilles de vigne (Vitis vinifera 'Cabernet Sauvignon') saine et atteinte d'eutypiose

2005 ◽  
Vol 83 (2) ◽  
pp. 194-201 ◽  
Author(s):  
Lalla Aïcha Rifai ◽  
Tayeb Koussa ◽  
Laurence Geny ◽  
Aziz Fassouane ◽  
Michel Broquedis ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Cabernet Sauvignon ◽  
Eutypa Lata ◽  
Conjugated Polyamines ◽  
Grapevine Leaves ◽  
Covalently Linked ◽  
Chlorhydric Acid ◽  
Host Parasite ◽  
Apparently Healthy

Effects of Eutypa lata, the fungal agent of eutypiosis, on polyamine (putrescine (Put), spermidine (Spd), spermine (Spm), diaminopropane (Dap)) and tyramine (Tyr) contents in grapevine leaves were studied to determine the relationship between these components and disease development. The external symptoms of eutypiosis are small and necrotic leaves, which could be observed on only one arm or on two arms of the vine stock. This study was carried out on healthy leaves (S, borne by healthy vine stock), apparently healthy leaves (Aps, borne by one arm without symptoms, whereas the other arm was diseased), and moderately (M. mal.) and strongly (F. mal.) diseased leaves. We analysed free polyamines (free PAs, chlorhydric acid soluble fraction), conjugated polyamines (PAs-fpm, PAs covalently linked to molecules with low molecular mass like hydroxycinnamic acids), and bound polyamines (PAs-mm, covalently linked to macromolecules) in Vitis vinifera L. 'Cabernet sauvignon', a variety sensitive to eutypiosis. In diseased leaves, we noted a decrease of free PAs, PAs-fpm, free Tyr, and Tyr-fpm levels. By contrast, the Dap-fpm level was increased by the disease. Eutypiosis also induced an increase of Spm-mm and Dap-mm levels, whereas the Put-mm and Spd-mm levels were decreased. Free Put, free Spd, PAs-fpm, free Tyr, and Tyr-fpm levels were higher in apparently healthy leaves than in healthy leaves. The PAs-mm levels were slightly affected by eutypiosis in apparently healthy leaves. The specific role of each type of polyamines and tyramine is discussed with regard to the host-parasite relationship.Key words: polyamines, leaf, Eutypa lata, Vitis vinifera.

Automatic discrimination of grapevine (Vitis vinifera L.) clones using leaf hyperspectral imaging and partial least squares

2014 ◽  
Vol 153 (3) ◽  
pp. 455-465 ◽  
Author(s):  
A. M. FERNANDES ◽  
P. MELO-PINTO ◽  
B. MILLAN ◽  
J. TARDAGUILA ◽  
M. P. DIAGO
Keyword(s):  
Vitis Vinifera ◽  
Least Squares ◽  
Partial Least Squares ◽  
Near Infrared ◽  
Dna Analysis ◽  
Apical Part ◽  
Vitis Vinifera L ◽  
Adaxial Side ◽  
Infrared Wavelength ◽  
Grapevine Leaves

SUMMARYA worldwide innovative method to discriminate grapevine clones is presented. It is an alternative to ampelography, isozyme and DNA analysis. The spectra and their first and second derivatives of 201 bands in the visible and near-infrared wavelength range between 634 and 759 nm were used as inputs to a classifier created using partial least squares. The spectra were acquired in the laboratory for the adaxial side of the apical part of the main lobe of fully hydrated grapevine leaves. The classifier created allowed the separation of 100 leaves of the Cabernet Sauvignon (Vitis vinifera L.) variety into four clones, namely CS 15, CS 169, CS 685 and CS R5, comprising 25 leaves each. The percentages of leaves correctly classified for these clones were 98·2, 99·2, 100 and 97·8%, respectively, when the classifier input was the second derivative of the normalized spectra. These percentages were determined by Monte-Carlo cross-validation. With the new method proposed, each leaf of a given variety can be classified in a few seconds according to its clone in an environmentally friendly way.

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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