Krämer, Reiner

Lantos, Edit

Nothnagel, Thomas

Schliephake, Edgar

English

JKI Open Journal Systems (Julius Kühn-Institut)

 Lantos et al. 9th Young Scientists Meeting, Quedlinburg, Germany, November 09-11, 2016 Feeding behavior of Green peach aphid (Myzus persicae) on Asparagus spp. susceptible and resistant to Asparagus virus 1 Edit Lantos1, Edgar Schliephake2, Reiner Krämer1, Thomas Nothnagel1 1 Julius Kühn-Institut, Institute for Breeding Research on Horticultural Crops, Quedlinburg 2 Julius Kühn-Institut, Institute for Resistance Research and Stress Tolerance, Quedlinburg Email of corresponding author: edit.lantos@julius-kuehn.de The Green peach aphid (Myzus persicae S.) is probably the most important vec-tor of Asparagus virus 1 for cultivated asparagus (Asparagus officinalis L.). Stylet-borne viruses such as Asparagus virus 1 (AV-1) will be transmitted during brief intracellular punctures of aphid feeding.  The control of M. persicae has relied almost exclusively on the use of chemi-cal insecticides, but insecticides normal-ly do not kill aphid vectors quickly enough to prevent the transmission of non-persistent viruses. Therefore, a con-trol of this aphid on asparagus and the virus diseases must base on host plant resistance. In the cultivated asparagus there is no AV-1 resistance. Resistance to AV-1 was found in various wild rela-tives of asparagus.  In this study we compared the ac-ceptance of asparagus species as host plant by M. persicae and the cell pene-trations for the transmission of non-persistent viruses by using the electrical penetration graph technique (EPG). In basic principle of the EPG plant and aphid are incorporated in an electrical circuit. When the aphid penetrates the leaf with its stylet, they complete the circuit and as EPG output specific pat-terns are recorded. There are relation-ships of waveforms to aphid activities and the location of the stylet tips in the plant tissue.  The results suggested that Asparagus officinalis has been best accepted as a host plant by Myzus persicae. Wild rela-tives of asparagus revealed a different feeding behavior on M. persicae. Lower numbers of intracellular punctures re-duce the probability of virus transmis-sion but do not exclude it. Our results show that an aphid resistance (vector resistance) of wild relatives can largely be excluded. A specific relation between intracellular punctures and the AV-1 resistance in wild relatives will be fur-ther examined. 52 Berichte aus dem Julius Kühn-Institut 186

Feeding behavior of Green peach aphid (Myzus persicae) on Asparagus spp. susceptible and resistant to Asparagus virus 1

https://ojs.openagrar.de/index.php/BerichteJKI/article/download/6966/6458

Feeding behavior of Green peach aphid (Myzus persicae) on Asparagus spp. susceptible and resistant to Asparagus virus 1

Abstract

Similar works

Full text

Available Versions

JKI Open Journal Systems (Julius Kühn-Institut)