Observations on penetration of Barley leaves by the aphidRhopalosiphum maidis (Fitch)

Evert, Ray F.; Eschrich, Walter; Eichhorn, Susan E.; Limbach, Steven T.

doi:10.1007/bf01287294

Cited by 45 publications

(24 citation statements)

References 23 publications

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“…The extension of the plasmalemma suggests that new membrane material has been added and that this process effectively excludes the stylets and sheath from the protoplast. on Tilia americana (L.) (Evert et al, 1968); Rhopalosiphum maidis (Fitch) on Hordeum vulgare (L.), (Evert et al, 1973); Rhopalosiphum padi (L.) on Triticum aestivum (L.), (Spiller et al, 1985). The amorphous material which surrounds the sheath may represent a plant wound response induced by stylet penetration.…”

Section: Discussionmentioning

confidence: 99%

Ultrastructure of the stylet pathway of Brevicoryne brassicae in host plant tissue, Brassica oleracea

Kimmins

1986

Entomologia Exp Applicata

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Stylets and salivary sheaths of the cabbage aphid, B. brassicae (L.) were studied in leaf tissue of B. oleracea (L.) with Transmission Electron Microscopy. Examples of inter cellular penetration are described by sections of stylets and saliva in air spaces or between adjacent cell walls. Intracellular penetrations are represented by stylets and saliva within damaged cells. High resolution microscopy reveals a third route, where stylets and saliva lie between cell walls and plasmalemmas. This route is called intramural.The results are discussed with particular reference to signals of Electrical Penetration Graphs and at wider level to aphid-host plant selection and phloem location.

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Section: Discussionmentioning

confidence: 99%

Ultrastructure of the stylet pathway of Brevicoryne brassicae in host plant tissue, Brassica oleracea

Kimmins

1986

Entomologia Exp Applicata

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“…Although most aphid species ingest primarily from phloem sieve elements (Evert et al 1968, Dixon 1975, Bing et al 1991, some aphidoids variously consume epidermis, mesophyll, phloem parenchyma, and companion cells (Nault and Gyrisco 1966, McLean and Kinsey 1967, Tjallingii 1990, and xylem, involving the penetration of wood (Heriot 1934, Balch 1952, Evert et al 1968, Hain et al 1991. The typical aphidoid path of host tissue penetration is intercellular (Büsgen 1891;Davidson 1923;Horsfall 1923;Kloft 1955;Evert et al 1968Evert et al , 1973Pollard 1971), frequently tortuous (Täte 1937, Sorin 1966, Pollard 1973, and generally of considerable distance, ranging up to 5 times the body length in the case of some phylloxerans (Balch 1952, Forbes andMullick 1970). Documented stylet lengths range from 0.12 mm in Rhopalosiphum maidis (Fitch) (Aphididae) attacking leaf mesophyll (Bing et al 1991), to 1.9 mm in various species of Adelges (Adelgidae) consuming cortical parenchyma (Balch 1952, Kloft 1955, Forbes and Mulfick 1970, and to a kno\\'n maximum of 12.5 mm in Longistigma Vol.…”

Section: Hemipteroid Feeding Strategiesmentioning

confidence: 99%

Insect Fluid-Feeding on Upper Pennsylvanian Tree Ferns (Palaeodictyoptera, Marattiales) and the Early History of the Piercing-and-Sucking Functional Feeding Group

Labandeira

Phillips

1996

Annals of the Entomological Society of America

108

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“…Using a stylet severed from an aphid by a microscope laser shot as tip of the microelectrode, it is possible to measure the sieve tube membrane potential over an extended period of time. The stylets are embedded in hardened saliva (Evert et al 1973), which insulates electrically. Once attached to the circuit, the system keeps a potential difference of -160 mV.…”

Section: Measurement Of Action Potentialsmentioning

confidence: 99%

Transport processes in stimulated and non-stimulated leaves of Mimosa pudica

Fromm

Eschrich

1988

Trees

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Summary. Adenosine diphosphate (ADP), adenosine triphosphate (ATP) and orthophosphate were determined in non-stimulated, stimulated and relaxed pulvini of mature Mimosa pudica L. leaves. Additional determinations were made with leaflets, rhachillae, petiole and the stem in the stimulated condition. Results show that the content of adenine nucleotides is approximately twice as high in the pulvini as in the tissues between the pulvini. Orthophosphate, in contrast, occurs at higher concentrations in the connecting tissues than in the pulvini. ATP content is highest in the primary pulvini (0.8 ~tmol/mg dry wt.) and lowest in the tertiary pulvini. Stimulation causes consumption of ATP with a simultaneous increase in ADP content; however, the response is different in each type of pulvinus. This difference is best expressed in the ATP'ADP ratio. Stimulation causes the most marked reduction of the ratio (9.5-1.4) in the secondary pulvini which react nyctinastically. Orthophosphate content is reduced by stimulation in all types of pulvini, and is increased during the recovery phase. By using a stylet bundle severed from a feeding aphid by a laser shot as tip for the microelectrode, changes of sieve tube membrane potentials were recorded. The changes of the electropotentials following stimulation show that the sieve tube is the pathway for the transmission of the excitation signal in the form of an action potential.

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Observations on penetration of Barley leaves by the aphidRhopalosiphum maidis (Fitch)

Cited by 45 publications

References 23 publications

Ultrastructure of the stylet pathway of Brevicoryne brassicae in host plant tissue, Brassica oleracea

Ultrastructure of the stylet pathway of Brevicoryne brassicae in host plant tissue, Brassica oleracea

Insect Fluid-Feeding on Upper Pennsylvanian Tree Ferns (Palaeodictyoptera, Marattiales) and the Early History of the Piercing-and-Sucking Functional Feeding Group

Transport processes in stimulated and non-stimulated leaves of Mimosa pudica

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