Salivation into sieve elements in relation to plant chemistry: the case of the aphid <i>Sitobion fragariae</i> and the wheat, <i>Triticum aestivum</i>

Ramı́rez, Claudio C.; Niemeyer, Hermann M.

doi:10.1046/j.1570-7458.1999.00472.x

Cited by 20 publications

(8 citation statements)

References 20 publications

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“…Moreover, on leaves previously infested by heterospecific aphids, the number of probes and total duration of the pathway increased significantly. These are typical features of the behaviour of aphids feeding on resistant plants, as reported in EPG studies on aphid/plant systems (Campbell et al, 1982;van Helden & Tjallingii, 1993;Cole, 1994;Caillaud et al, 1995;Klingler et al, 1998;Ramirez & Niemeyer, 1999;Sauge et al, 2002). The modifications observed in the feeding behaviour of M. persicae tested on healthy leaves of previously infested potato plants led us to hypothesize that a mechanism of systemic resistance is induced by M. persicae and Ma.…”

Section: Discussionsupporting

confidence: 59%

Local and systemic responses induced by aphids in Solanum tuberosum plants

Dugravot

Brunissen

Létocart

et al. 2007

Entomologia Exp Applicata

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The aphids Macrosiphum euphorbiae (Thomas) and Myzus persicae (Sulzer) (Homoptera: Aphididae) are serious pests of potato ( Solanum tuberosum L.) (Solanaceae), notably in transmitting several plant viruses. Heterospecific interactions may occur between these two species as they are often seen at the same time on the same potato plant in the field. As aphid infestation is known to induce both local and systemic changes, we conducted experiments to determine the effect of previous infestation on probing behaviour and feeding-related parameters. We used the DC electrical penetration graph technique to characterize the influence of previous infestation by conspecific M. persicae or by heterospecific Ma. euphorbiae on M. persicae feeding behaviour at both local and systemic levels, i.e., on previously infested leaves and on non-previously infested leaves of infested plants, respectively. Conspecific and heterospecific infestation led to similar modification of M. persicae feeding activities. However, the effects of previous infestation occurring at the local level were opposite to those observed at the systemic level. Myzus persicae food acceptance was slightly enhanced on previously infested leaves, whereas it was inhibited on non-infested leaves of infested plants, which indicated an induced resistance mechanism. Our results advance the understanding of the mechanisms involved in aphid-host plant acceptance and colonization processes on potato plants in conspecific and heterospecific situations.

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Section: Discussionsupporting

confidence: 59%

Local and systemic responses induced by aphids in Solanum tuberosum plants

Dugravot

Brunissen

Létocart

et al. 2007

Entomologia Exp Applicata

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“…In this study, the duration of E1 was extended on Las‐infected plants, whereas the duration of E2 was reduced. A number of studies have shown increased durations of E1 by aphids on resistant plants (van Helden & Tjallingii, 1993; Caillaud et al., 1995; Ramírez & Niemeyer, 1999; Garzo et al., 2002; Tjallingii, 2006), and Ponder et al. (2000) found that E1 of R. padi was longer on nitrogen‐deficient plants.…”

Section: Resultsmentioning

confidence: 99%

Feeding behaviour of the Asiatic citrus psyllid, Diaphorina citri, on healthy and huanglongbing‐infected citrus

Cen

Yang

Holford

et al. 2012

Entomologia Exp Applicata

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Diaphorina citri Kuwayama (Hemiptera: Sternorrhyncha: Psyllidae) is a vector of huanglongbing, a disease of citrus that in Asia is caused by ‘Candidatus Liberibacter asiaticus’ (α‐Proteobacteria) (Las). Acquisition of Las by D. citri appears to be variable, and this variability may be due to the suitability of the host plants and their tissues for acquisition. Therefore, this study aimed to determine the effect of symptom severity of the disease on the feeding behaviour of D. citri. Use of an electrical penetration graph showed that the pathway phase of D. citri consisted of four waveforms, A, B, C, and D; waveforms A and B have not been reported for D. citri before. The remaining waveforms, E1, E2, and G, conform to those described before for D. citri. The duration of the non‐penetration period did not differ between healthy or infected plants. However, in moderately and severely symptomatic plants, the duration of the pathway phase increased, whereas the phloem phase was shorter. In all diseased plants, the times to first and sustained salivation in the phloem were longer than those in control plants, with the times being related to symptom severity. As symptom expression increased, the percentage of time spent by psyllids salivating during the phloem phase increased; however, the percentage of time spent in phloem activities reduced gradually from ca. 74% in the control plants to ca. 8% in the severely symptomatic plants. In contrast, the percentage of time spent on xylem activities increased, as did the proportion of psyllids feeding from xylem. The differences in the durations of the E waveforms on plants showing different levels of symptom expression may account for differences in acquisition found amongst studies; therefore, future work on the acquisition and transmission of Las needs to carefully document symptom expression.

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“…On unacceptable and resistant host plants, aphids tend to penetrate plant tissue (probe) more frequently and for shorter periods (McLean & Kinsey, 1968;Mesfin et al, 1995), display less phloem feeding (McLean & Kinsey, 1968;Cole et al, 1993) and more salivation (Caillaud et al, 1995;Ramı´rez & Niemeyer, 1999). The capacity of a phloem-feeder to locate a suitable sieve element within a plant as a feeding site and sustain ingestion may influence its ability to achieve peak performance.…”

Section: Introductionmentioning

confidence: 99%

Effects of host plant drought stress on the performance of the bird cherry‐oat aphid, Rhopalosiphum padi (L.): a mechanistic analysis

Hale

Bale

Pritchard

et al. 2003

Ecological Entomology

121

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1. The growth (increase in height and leaf number) of four grass species was reduced by a À0.5 MPa drought stress, but the performance of an associated herbivore, Rhopalosiphum padi (L.), was not affected consistently. The intrinsic rate of increase of R. padi was reduced by drought stress on three grass species, including Dactylis glomerata (L.), but was unaffected on Arrhenatherum elatius (L.). Therefore, there is no general relationship in the effect of plant drought on an insect herbivore, even among closely related host plant species.2. Drought stress increased the quality of plant phloem sap, as indicated by increased sieve element osmotic pressure and essential amino acid concentrations. Thus, diet quality could not account for the reduced performance of R. padi under drought stress. The concentration of essential amino acids in the phloem of wellwatered A. elatius was, however, lower than that of well-watered D. glomerata, correlating with the decreased performance of aphids on well-watered A. elatius.3. There were no differences in aphid feeding duration between watering treatments or plant species but sap ingestion rates were reduced significantly under drought stress.4. Using the measure of dietary amino acid concentrations and the estimate of sap ingestion, the essential amino acid flux through aphids was calculated. Compared with the flux through aphids feeding on well-watered D. glomerata, there was a reduction in aphids feeding on drought-stressed D. glomerata and droughtstressed A. elatius due to lower sap ingestion rates. The flux through aphids on well-watered A. elatius was also reduced due to low phloem essential amino acid concentrations. Thus, the performance of an aphid is correlated with the availability and accessibility of essential amino acids.

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Salivation into sieve elements in relation to plant chemistry: the case of the aphid Sitobion fragariae and the wheat, Triticum aestivum

Cited by 20 publications

References 20 publications

Local and systemic responses induced by aphids in Solanum tuberosum plants

Local and systemic responses induced by aphids in Solanum tuberosum plants

Feeding behaviour of the Asiatic citrus psyllid, Diaphorina citri, on healthy and huanglongbing‐infected citrus

Effects of host plant drought stress on the performance of the bird cherry‐oat aphid, Rhopalosiphum padi (L.): a mechanistic analysis

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