Journal of Plant Protection Research (2011) 51, 171-178

Bozena Kordan, Leslaw B. Lahuta, Katarzyna Dancewicz, Wojciech Sadej and Beata Gabrys (2011)
Effect of lupin cyclitols on pea aphid probing behaviour
Journal of Plant Protection Research 51 (2), 171-178
Abstract: The cyclitols: d-pinitol,d-chiro-inositol are naturally present in the tissues of Lupinus angustifolius. The effect of these cyclitols on the behaviour of the pea associated clone of Acyrthosiphon pisum during various stages of probing was studied. The main stage of probing studied was the stylet penetration in mesphyll and vascular bundle. d-pinitol, d-chiro-inositol and their mixture were exogenously applied to pea Pisum sativum explants and the aphid probing behaviour was evaluated using the Electrical Penetration Graph technique (EPG). Feeding of peas with cyclitols at a concentration of 10 mM,caused a selective accumulation of d-pinitol and d-chiro-inositol instems, leaf petioles, and leaf blades. In aphid bodies, both cyclitols were traced, respectively, to the host plant treatment. The new cyclitols in pea tissues did not significantly affect the total duration and frequency of aphid activities during probing in peripheral as well as vascular tissues. However, the aphid behaviour on cyclitol-treated plants as compared to their behaviour on the control was slightly altered. Non-probing and probing in mesophyl prevailed among aphid activities during the initial period of stylet penetration. Aphids on d-pinitol+d-chiro-inositol-treated plants reached phloem vessels relatively later than aphids on the control and d-chiro-inositol plants. There were recurrent switches between E1 (salivation) and E2 (sap ingestion) patterns in some aphids during the phloem phase on d-pinitol and d-pinitol+d-chiro-inositol- treated plants. This may reflect difficulties in the uptake of the phloem sap, and point to lupin cyclitols as being responsible, at least in part, for the rejection of L. angustifolius as a host plant by the pea clone of A. pisum.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: English)
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Database assignments for author(s): Beata Gabrys, Bozena Kordan

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Acyrthosiphon pisum