scholarly journals Research Note virus transmission by grape phylloxera (Daktulosphaira vittfoliae Fitch)

2004 ◽  
Vol 10 (4) ◽  
Author(s):  
L. Tóth H. ◽  
Mikulás J. ◽  
Kocsis L.
Keyword(s):  
Vitis Vinifera ◽  
Infected Plant ◽  
Virus Transmission ◽  
Research Note ◽  
Vitis Vinifera L ◽  
Grapevine Fanleaf Virus ◽  
Daktulosphaira Vitifoliae ◽  
Grape Phylloxera ◽  
Direct Damage ◽  
Infected Vine

Grape phylloxera (Daktulosphaira vitifoliae FITCH) infests immature roots of both Vitis vinifera L. and phylloxera resistant rootstocks. A capability to transmit viticultural viruses would make grape phylloxera a phytosanitary threat even under conditions where direct damage by the insect is not likely. We tested the hypothesis that phylloxera could transmit grapevine fanleaf virus (GFLV) by planting infected and non-infected vines in common 10 liter pots and infecting roots of the infected vine with grape phylloxera. In this test infection of a previously non-infected plant in the absence of nematode population suggests that grape phylloxera is a vector of GFLV.

TRANSFORMATION OF VITIS VINIFERA L. CV NEBBIOLO WITH THE COAT PROTEIN GENE OF GRAPEVINE FANLEAF VIRUS (GFLV)

2003 ◽  
pp. 309-314 ◽  
Author(s):  
Ivana Gribaudo ◽  
Valentina Scariot ◽  
Giorgio Gambino ◽  
Andrea Schubert ◽  
Richard Göller ◽  
...  
Keyword(s):  
Coat Protein ◽  
Vitis Vinifera ◽  
Coat Protein Gene ◽  
Protein Gene ◽  
Vitis Vinifera L ◽  
Grapevine Fanleaf Virus

scholarly journals The development and reproduction of grape phylloxera (Daktulosphaira vitifoliae Fitch) strains of Hungarian vine-districts in root-bioassays

2004 ◽  
Vol 10 (4) ◽  
Author(s):  
H. L. Tóth ◽  
L. Horváthné Baracsi ◽  
L. Kocsis
Keyword(s):  
Vitis Vinifera ◽  
Continuous Observation ◽  
Daktulosphaira Vitifoliae ◽  
Grape Phylloxera ◽  
Bioassay Method ◽  
Average Production ◽  
Root Bioassay ◽  
High Level

The root bioassay method allows for 4-6 week continuous observation of grape phylloxera feeding on the grape root. 10 Hungarian phylloxera strains were compared on susceptible Vitis vinifera cv. Chardonnay and the resistant rootstocks of V. berlandieri x V. riparia Teleki 5C and V. berlandieri x V. rupestris Georgikon 121 in in vitro observations. The strains originated from Villany and Eger (Figure 3) had higher reproduction on the root of V. berlandieri x V. riparia Teleki 5C (201 and 119 eggs) and were more aggressive than the others (average production 10 eggs). The continuous high level of survival, development and reproduction of the Eger strain on Teleki 5C (V. berlandieri x V. ripuria) until day 46 may be due to adaptation.

scholarly journals Sanitary status of slovenian indigenous grapevine cultivar Refosk

OENO One ◽  
2005 ◽  
Vol 39 (1) ◽  
pp. 19 ◽  
Author(s):  
Irma Tomazic ◽  
Zora Korosec-Koruza ◽  
Natasa Petrovic
Keyword(s):  
Vitis Vinifera ◽  
Mosaic Virus ◽  
Vitis Vinifera L ◽  
Grapevine Virus ◽  
Grapevine Fanleaf Virus ◽  
Arabis Mosaic Virus ◽  
Disease Symptoms ◽  
Grapevine Cultivar ◽  
Grapevine Virus A ◽  
Grapevine Virus B

<p style="text-align: justify;">Sanitary status of visually selected and nonselected indigenous grapevine cultivar 'Refosk' (Vitis vinifera L. cv. 'Refosk') was evaluated. Nine viruses were tested by ELISA: Nepoviruses Grapevine fanleaf virus (GFLV) and Arabis mosaic virus (ArMV), Closteroviruses Grapevine leafroll associated viruses 1 (GLRaV-1), 2 (GLRaV-2), 3 (GLRaV-3), and 6 (GLRaV-6), Grapevine fleck virus (GFkV) and Vitiviruses Grapevine virus A (GVA) and Grapevine virus B (GVB). All viruses except ArMV and GVB were detected. The vines of cv. ‘Refosk’ passing the visual selection were 50 % free of tested viruses in comparison to only 24 % virus-free vines of non-visually selected material. Visually selected plants revealed the highest incidence of virus GLRaV- 1 (37 %) and in addition to that a 15 % incidence of rugose wood (RW) disease symptoms.</p>

Clone lineages of grape phylloxera differ in their performance on Vitis vinifera

2010 ◽  
Vol 100 (6) ◽  
pp. 671-678 ◽  
Author(s):  
K.S. Herbert ◽  
P.A. Umina ◽  
P.J. Mitrovski ◽  
K.S. Powell ◽  
K. Viduka ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Egg Production ◽  
Adult Life ◽  
Root Weight ◽  
Life Stages ◽  
Daktulosphaira Vitifoliae ◽  
Grape Phylloxera ◽  
Leaf Chlorophyll ◽  
Important Pest ◽  
Highly Virulent

AbstractGrape phylloxera, Daktulosphaira vitifoliae Fitch, is an important pest of grapevines (Vitis vinifera L.) (Vitaceae). The distribution and frequency of phylloxera clone lineages vary within infested regions of Australia, suggesting the introduction of separate lineages of D. vitifoliae with host associations. Virulence levels of particular phylloxera clones may vary on V. vinifera, but much of this evidence is indirect. In this study, we directly tested the performance of phylloxera clones on V. vinifera using an established excised root assay and a new glasshouse vine assessment. In the root assay, grape phylloxera clones differed in egg production and egg to adult survivorship. In the vine assay, clones differed in the number of immature and adult life stages on roots. In addition vine characteristics, including mean stem weight, root weight, leaf chlorophyll and leaf area, were affected by different phylloxera clones. The two most widespread clones displayed high levels of virulence. These results point to only some phylloxera clones being highly virulent on V. vinifera, helping to explain patterns of field damage, phylloxera distributions and continued survival and production of V. vinifera vines in some infested areas.

scholarly journals Effects of salt stress on plant growth, abscisic acid and salicylic acid in own-rooted cultivars of Vitis vinifera L.

2021 ◽  
Vol 19 (3) ◽  
pp. e0803-e0803
Author(s):  
Sergio J. Álvarez-Méndez ◽  
Keyword(s):  
Salicylic Acid ◽  
Abscisic Acid ◽  
Salt Stress ◽  
Stomatal Conductance ◽  
Vitis Vinifera ◽  
Canary Islands ◽  
Physiological Responses ◽  
Nacl Stress ◽  
Vitis Vinifera L ◽  
Daktulosphaira Vitifoliae

Aim of study: In the most areas of vineyards worldwide, cultivars are frequently grafted on specific rootstocks to avoid Daktulosphaira vitifoliae pest attack. Nevertheless, the absence of this pest in Canary Islands allowed the chance to conserve and cultivate traditional or new own-rooted genotypes without the requirement of the rootstocks. To investigate the responses of own-rooted genotypes of Vitis vinifera L. to salt stress conditions, ‘Castellana Negra’ (‘CN’) and ‘Negramoll’ (‘Ne’) were used with the aim to characterize their morphological and physiological responses. Area of study: Canary Islands, Spain Material and methods: The effects of NaCl stress on growth, abscisic acid (ABA), salicylic acid (SA) and proline were assessed in ‘CN’ and ‘Ne’ under greenhouse conditions. Main results: In ‘CN’, the decrease of leaf number in stressed plants was lower and started eleven days later than in ‘Ne’. Salt stress also reduced stomatal conductance (gs), although such decrease took place earlier in ‘CN’ than in ‘Ne’. ABA and SA concentrations in ‘CN’ leaves were 2-fold higher than those of ‘Ne’. Salt stress increased leaf ABA and SA content in both genotypes, compared to control. In conclusion, ABA and SA appear to be involved in grapevines responses to salinity and suggest that exogenous SA could be useful to mitigate the stress impacts. Research highlights: ‘CN’ exhibited a better response than ‘Ne’ through the delay of salt injury establishment, and the dissimilar responses between ‘CN’ and ‘Ne’ seem to be associated to the higher accumulation of ABA and SA under salt stress.

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
Sign in / Sign up

Export Citation Format

Share Document