Kutas János

• Government Office of Zala County

The highly polyphagous aster yellows phytoplasma can infect winter oilseed rape as well. In Hungary, the first detection of the aster yellows phytoplasma in oilseed rape was reported in 2020. Leafhoppers are mentioned as the primary vectors of the pathogen, but only a few experiments have proven their transmission ability in Europe. In recent years...

Phytoplasma vector true hoppers (Auchenorrhyncha) in vineyards of Zala county

Cydia interscindana (Möschler, 1866) has spread through several European countries in the past few years, becoming an invasive pest of ornamental trees. It was collected in Hungary for the first time in a pheromone trap set for Cydia pomonella (Linnaeus, 1758) in 2014. Here we discuss its recent distribution in Hungary based on intensive sampling b...

The Nearctic leafminer of black walnut Coptodisca juglandiella (Chambers, 1874) was found in Hungary and reported as new for Europe. Larvae were found in leafmines on black walnut (Juglans nigra (L.)), white walnut (J. cinerea (L.)) and Arizona walnut (J. major (Torr.)); the latter two Juglans species are new host plant records for C. juglandiella....

At first time the North American leafminer was found in Italy in 2010. The species was reported from Italy and from Hungary from Europe. The fisrt mines of the moth were detected on walnut (Junglans regia) leaves in Tornyiszentmiklós in Hungary.

The antifeedant activities of methanolic extracts made from seven plant species (Abutilon theophrasti Medic., Ajuga chamaepitys (L.) Schreb., Amorpha fruticosa L., Matricaria chamomilla L., Matricaria inodora L., Tanacetum vulgare L. and Tilia cordata Mill.) were assessed in the laboratory at 0.5% and 5% dosages against Colorado potato beetle (Lept...

The cDNA for a 73-mer peptide containing two locust serine proteinase inhibitors was cloned, fused to the constitutive CaMV35S promoter and introduced into potato by Agrobacterium-mediated transformation. From 23 independent transgenic lines, three with high mRNA level and proteinase inhibitory activity were propagated in vitro and transferred to p...

Larvae of WCR are feeding on the roots of corn while plants fall down. The egg hatching is continuous and soil insecticides are not effective to kill larvae. Unfortunately the recent control methods while we incorporate disinfectors Into the soil under seeding are not able to give enough effect on larvae of WCR under the whole period of larval deve...

The natural defence system of plants often involves inhibitors of digestive enzymes of their pests. Modem and environmental-friendly methods try to increase this plant resistance by expressing heterologous protease inhibitors in crops. Here we report the effects of expressing a gene from desert locust (Schistocerca gregaria) encoding two serine pro...

Nowadays increasing efforts are made to develop environmentally safer pest control methods. One such method can be the use of natural antifeedants. Laboratory experiments were conducted to determine the effects of 3 plant extracts (Plantago major L., Brassica napus var. napus L., Tilia cordata Mill.) and 1 enzyme inhibitor isolated from the desert...