New Correlations Between Aphid Stylet Paths and Nonpersistent Virus Transmission

Collar, José Luis; Avilla, C.; Fereres, Alberto

doi:10.1093/ee/26.3.537

Cited by 60 publications

(49 citation statements)

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“…The punctures appear to play a crucial role in the transmission of non-persistent plant viruses (Powell, 1991), concerning virus acquisition as well as inoculation. Recently, two out of three waveform sub-phases during the intracellular period of a pd (Powell et al, 1995;Collar et al, 1997) were correlated behaviourally, using viruses as markers (Martin et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Anomalous stylet punctures of phloem sieve elements by aphids

Tjallingii

Gabryś

1999

Entomologia Exp Applicata

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A deviating type of potential drop (pd), i.e. the electrically recorded intracellular punctures during the pathway phase of plant penetration by aphids, is described and discussed. This so-called repetitive pd (R-pd) has been observed in 4 aphid species, two on herbs and two on sycamore. Apart from a regular repetition with short intervals, the most characteristic feature of the R-pd is the middle intracellular part, i.e. sub-phase 2, which is extended, making the individual R-pd 2-3 times longer than the normal pd. Differences between the normal and R-pd are described, as well as differences within each pd type between species. The R-pd's seem to reflect repeated punctures of phloem sieve elements. Their biological significance is unknown.

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Section: Introductionmentioning

confidence: 99%

Anomalous stylet punctures of phloem sieve elements by aphids

Tjallingii

Gabryś

1999

Entomologia Exp Applicata

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“…The speciÞc waveform patterns were associated with nonpenetration (waveform usually designated by the letters NP), styletÕs cell punctures (pd), styletÕs pathway phase (waveforms A, B, and C combined, excluding waveform F), mechanical stylet work and difÞculties during penetration (waveform F), xylem ingestion (waveform G), and phloem phase (E). Three subphases of within pds were also assessed (Powell et al 1995, Collar et al 1997. Phloem phase includes two phases, one of salivation in the sieve elements (E1) and phloem ingestion (E2).…”

Section: Methodsmentioning

confidence: 99%

“…Regarding phloem factors, the time from the Þrst probe to the Þrst sustained E2 (10 min) was also slightly longer on TM ϫ TM. The total duration of pds, which are brief intracellular punctures of plant cells by the aphidÕs stylet during the probing phase, showed, in turn, three subphases that are behaviorally related to the transmission of nonpersistent plant viruses (Powell et al 1995, Collar et al 1997). The duration of pds was longer on TD ϫ D, with a longer duration of subphases II-1 and II-2 within phase II ( Fig.…”

Section: Two-choice Preferencementioning

confidence: 99%

Host Selection and Probing Behavior of the Poplar Aphid <I>Chaitophorus leucomelas</I> (Sternorrhyncha: Aphididae) on Two Poplar Hybrids With Contrasting Susceptibility to Aphids

et al. 2014

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Poplars are frequently attacked by aphids. The differential susceptibility of poplar hybrids to the aphid Chaitophorus leucomelas Koch (Sternorrhyncha: Aphididae) has been described, but the mechanism underlying this pattern is unknown. This work tested the hypothesis that poplar resistance to this aphid is associated with the presence of volatiles and secondary plant compounds that affect host selection and feeding behavior. This hypothesis was tested by studying the host choice and feeding behavior of C. leucomelas on two poplar hybrids with contrasting susceptibilities to this aphid ([Populus trichocarpa Torrey & Gray x Populus deltoides Bartram ex Marshall] x P. deltoides [TD x D], and [P. trichocarpa x Populus maximowiczii Henry] x [P. trichocarpa x P. maximowiczii] [TM x TM]). The results showed that C. leucomelas rejected leaves of the TM x TM hybrid and did not prefer odors from either hybrid. Electronic monitoring of the probing behavior of C. leucomelas suggested the involvement of antifeedant factors in the TM x TM hybrid. In addition, the chemical characterization of volatiles, epicuticular waxes, and internal phenols of leaves from both poplar hybrids revealed that TM x TM had a higher abundance of monoterpenes, sesquiterpenes, n-alkanes, and phenols. These results are discussed in terms of their contribution to poplar breeding programs aimed at enhancing insect resistance.

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“…During these brief intracellular punctures, aphids secrete a small amount of watery saliva into the cell and then suck up a small volume of cell sap, presumably for sensory evaluation by the precibarial chemosensillae (Martín et al 1997;Powell 2005). It is during brief intracellular punctures, especially those near the beginning of a stylet penetration, that non-persistent viruses are transmitted by aphid vectors (Lopez-Abella et al 1988;Powell 1991;Powell et al 1995;Perez et al 1996;Collar et al 1997;Martín et al 1997).…”

Section: Feeding Behaviormentioning

confidence: 99%