Feeding behavior of Myzus persicae on asparagus species susceptible and resistant to Asparagus virus 1

Abstract

Asparagus virus 1 (AV‐1) infects Asparagus officinalis L. (Asparagaceae) in the field worldwide. However, various wild relatives of A. officinalis are resistant to AV‐1. Here we study the behavior of the green peach aphid, Myzus persicae (Sulzer) (Hemiptera: Aphididae), on 19 AV‐1‐resistant wild relatives of A. officinalis. We focus on behavior that is associated with regular cell penetration, relevant for inoculation of AV‐1, and sieve element penetration to check for vector resistance and its potential influence on AV‐1 transmission. Parameters, relevant for the transmission of non‐persistent viruses and host plant acceptance, were obtained by the electrical penetration graph technique. Furthermore, phylloclade architecture of A. officinalis and its wild relatives was examined to study its influence on aphid behavior. Behavior of M. persicae displays many cell penetrations and long ingestion periods on A. officinalis, compared to the generally shorter cell penetrations (reduced potential for virus transmission) and reduced or no ingestion (phloem‐located aphid resistance) on wild relatives. Because effects on aphid behavior are not consistent throughout the group of the tested wild relatives of A. officinalis, with some wild relatives being susceptible to M. persicae, a common genetic background for AV‐1 and aphid resistance appears to be unlikely. However, the reduced potential of virus transmission as well as aphid resistance shown by some wild relatives may be useful for future breeding programs.

Priming negatively affects feeding behaviour and aphid biomass of Rhopalosiphum padi on barley

“…Rhopalosiphum padi biotype R07 (JKI) individuals were reared on 3-to 4-week-old Hordeum vulgare cv. Rubina (Zadoks scale 11-12) in plastic cages with gauze-covered windows in a greenhouse under controlled environmental conditions (day/night regime of 16:8 h, at a temperature of 22 °C-24 °C and a relative humidity of 60%) (Lantos et al 2019). The plants were replaced at 14 day intervals.…”

Adaptability of Toxoptera aurantii (Hemiptera: Aphididae) to Different Tea Cultivars

“…Various studies have indicated that the probing behaviour of aphids on plants could be directly affected by external morphological characteristics and the internal organisational structure of the host plant [36,37]. If the resistance factors are located in the epidermis or mesophyll tissues, aphids exhibit a relatively high frequency of interruption during the probing process, and the probing pathway duration is markedly prolonged [38]. Our results demonstrated that the prying feeding behaviour of T. aurantii differed significantly among the seven tea cultivars.…”

Transfer of the Dominant Virus Resistance Gene AV-1pro From Asparagus prostratus to Chromosome 2 of Garden Asparagus A. officinalis L.

“…Until now, there has been no information about the genetic background of the different resistance sources. However, vector resistance was excluded for all these resistance sources by testing the feeding behaviour of the aphid Myzus persicae using an electrical penetration graph (EPG) technique (Lantos et al, 2019).…”