Probing behaviour of the green peach aphid Myzus persicae on resistant Prunus genotypes

Electrical penetration graphs of Myzus persicae (Sulzer) (Homoptera: Aphididae) feeding behaviour on four resistant and two susceptible genotypes of peach (Prunus persica L. Batsch) and related species showed that resistance was mainly linked to (i) reduced duration of phloem sap uptake, (ii) reduced percentage of pattern E1 (salivary secretion into sieve elements) followed by pattern E2 (sap ingestion) and (iii) increased number of shifts from E1 to E2 and back. These results suggest the unsuitability of phloem sap, and thus repetitive failures to initiate sustained ingestion. Extensive comparisons of the EPGs also revealed more specific trends. Aphids on the most susceptible cultivar GF305 produced significantly longer potential drops than on other peach genotypes. On the resistant Rubira, aphids generated more penetrations before the first E occurred, indicating the possible presence of a resistance factor before the phloem was reached. The clone P1908 of the wild species Prunus davidiana displayed traits of both susceptibility (less but longer probes) and resistance. In particular, aphids produced more E1, suggesting difficulties in preparing sieve elements before feeding. The aphid probing process could be correlated with aphid settling behaviour and bionomics, as previously reported, and gave evidence for the existence of different mechanisms underlying resistance in the tested genotypes against M. persicae.

[1]  J. Kervella,et al.  Settling behaviour and reproductive potential of the green peach aphid Myzus persicae on peach varieties and a related wild Prunus , 1998 .

[2]  C. Hodgson,et al.  Electrical penetration graphs of the damson‐hop aphid, Phorodon humuli on resistant and susceptible hops (Humulus lupulus) , 1996 .

[3]  G. Febvay,et al.  MacStylet, software to analyse electrical penetration graph data on the Macintosh. , 1996 .

[4]  B. Chaubet,et al.  Analysis of wheat resistance to the cereal aphid Sitobion avenae using electrical penetration graphs and flow charts combined with correspondence analysis , 1995 .

[5]  B. Chaubet,et al.  Application of discriminant analysis to electrical penetration graphs of the aphid Sitobion avenae feeding on resistant and susceptible wheat , 1995 .

[6]  W. F. Tjallingii,et al.  Aphid activities during sieve element punctures , 1994 .

[7]  R. Cole.  Locating a resistance mechanism to the cabbage aphid in two wild Brassicas , 1994 .

[8]  C. Girousse,et al.  Role of phloem sap quality and exudation characteristics on performance of pea aphid grown on lucerne genotypes , 1994 .

[9]  R. Monet,et al.  Déterminisme génétique de la résistance au puceron vert (Myzus persicae) chez le pêcher. Résultats complémentaires , 1994 .

[10]  W. F. Tjallingii,et al.  Tissue localisation of lettuce resistance to the aphid Nasonovia ribisnigri using electrical penetration graphs , 1993 .

[11]  W. F. Tjallingii,et al.  Fine structure of aphid stylet routes in plant tissues in correlation with EPG signals , 1993 .

[12]  G. Thottappilly,et al.  Feeding behaviour of Aphis craccivora (Koch) on cowpea cultivars with different levels of aphid resistance , 1992 .

[13]  M. Holyoak,et al.  The combination of electronic monitoring and video‐assisted observations of plant penetration by aphids and behavioural effects of polygodial , 1992 .

[14]  J. McNicol,et al.  Further evidence that resistance in raspberry to the virus vector aphid, Amphorophora idaei, is related to the chemical composition of the leaf surface , 1991 .

[15]  W. F. Tjallingii.  Continuous recording of stylet penetration activities by aphids. , 1990 .

[16]  W. F. Tjallingii,et al.  Stylet penetration by two aphid species on susceptible and resistant lettuce , 1989 .

[17]  W. F. Tjallingii.  Electrical recording of stylet penetration activities. , 1988 .

[18]  W. F. Tjallingii.  Membrane potentials as an indication for plant cell penetration by aphid stylets , 1985 .

[19]  B. Campbell,et al.  PROBING BEHAVIOR OF THE GREENBUG (SCHIZAPHIS GRAMINUM, BIOTYPE C) ON RESISTANT AND SUSCEPTIBLE VARIETIES OF SORGHUM , 1982 .

[20]  R. Monet,et al.  Résistance au puceron vert du pêcher, Myzus persicae Sulzer (Homoptera Aphididae) chez Prunus persica (L.) Batsch et d'autres espèces de Prunus , 1982 .

[21]  W. F. Tjallingii,et al.  ELECTRONIC RECORDING OF PENETRATION BEHAVIOUR BY APHIDS , 1978 .

[22]  L. Birch,et al.  The intrinsic rate of natural increase of an insect population , 1948 .