Intracellular reproductive manipulators, such as Candidatus Cardinium and Wolbachia are vertically transmitted to progeny but rarely show co-speciation with the host. In sap-feeding insects, plant tissues have been proposed as alternative horizontal routes of interspecific transmission, but experimental evidence is limited. Here we report results from experiments that show that Cardinium is hor...

The improvement of the agricultural and wine-making qualities of the grapevine (Vitis vinifera) is hampered by adherence to traditional varieties, the recalcitrance of this plant to genetic modifications, and public resistance to genetically modified organism (GMO) technologies. To address these challenges, we developed an RNA virus-based vector for the introduction of desired traits into grape...

Red wines produced in the Xinjiang region of China possess poor color density, and lack fruity notes and elegance. The freeze concentration technique, as a well-established concentration method for liquid food systems, was applied to the Cabernet Sauvignon (Vitis vinifera L.) wine-making process, aiming to investigate its effect on wine quality improvement. Results showed that the freeze concen...

Root-knotting nematodes are found in vineyards and associated with grapevine decline. This study aimed to evaluate the resistance of four new hybrids, obtained by crossing Vits labruscana rotundifolia (IBRE 421, IBBT 481, IBRK 504 IBMG 631), Meloidogyne javanica. also evaluated three rootstocks (IAC 766, Paulsen 1103, VR 043- 43), widely used showing levels M. The plants were from cuttings, the...

Calcium plays a central role in regulating signal transduction pathways. Calcineurin B-like proteins (CBLs), which harbor a crucial region consisting of EF hands that capture Ca2+, interact in a specific manner with CBL-interacting protein kinases (CIPKs). This two gene families or their interacting-complex widely respond to various environment stimuli and development processes. The genome-wide...

Powdery mildew caused by Erysiphe necator is one of the most important grapevine diseases in several viticulture areas, and high fungicide input is required to control it. However, numerous synthetic chemical pesticides are under scrutiny due to concerns about their impact on human health and the environment. Biopesticides, such as biogenic elicitors, are a promising alternative to chemical fun...

Previous surveys conducted in commercial nurseries found that different wood fungi, namely Cylindrocarpon spp., Botryosphaeriaceae, Phomopsis viticola and Phaeomoniella chlamydospora infect grapevine cuttings. Two fi eld trials were carried out to evaluate the effectiveness of cyprodinil + fl udioxonil, pyraclostrobin + metiram, fl udioxonil and cyprodinil to prevent or reduce natural infection...

Supervisor: Prof. Dr. Sándor Juhász-Nagy, Professor of Physiology and Pathophysiology Critical Examiners: Dr. András Vereckei, Assistent Professor of Cardiology, Ph.D. Dr. József Kaszaki, Assistent Professor of Surgery, Ph.D. President of the Defence Board: Prof. Dr. Ferenc Perner, Professor of Transplantation Surgery Members of the Defence Board: Dr. Mária Szekeres, University Assistent of Phy...