Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Urbańska A. , Leszczyński B. , Matok H. 2006. HOW DOES GRAMINE AFFECT PROBING BEHAVIOUR OF GRAIN APHID?, EJPAU 9(1), #02.
Available Online: http://www.ejpau.media.pl/volume9/issue1/abs-02.html

ABSTRACT

Probing behaviour of the grain aphid, Sitobion avenae (F.) on agarose-sucrose gels containing gramine at concentrations between 0.01 mM and 100 mM was examined using the EPG, electrical penetration graph technique.

The following effects were recorded: the decrease in the number of probes, extension of the pathway phases, representing the penetration of leaf tissues by the aphid stylets and subsequent probing before reaching phloem and a strong reduction of the phases E₁, E₂ and G reflecting the activities of the stylets within the phloem and xylem elements as the consequence of increase in the gramine content in the gels.

Accordingly, gramine appears to be the ‘anti-feedant’ compound towards the grain aphid. Its role as a probing stimulant for the aphid is discussed.

Key words: gramine, grain aphid, Sitobion avenae, probing behaviour, EPG, agarose-sucrose gel.

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Anna Urbańska
Department of Biochemistry and Molecular Biology,
University of Natural Sciences and Humanities in Siedlce, Poland
B. Prusa 12, 08-110 Siedlce, Poland
phone: +48 25 643 12 22,
fax: +48 25 644 59 59
email: annau@uph.edu.pl

Bogumił Leszczyński
Department of Biochemistry and Molecular Biology,
University of Podlasie, Siedlce, Poland
B. Prusa 12, 08-110 Siedlce, Poland
Phone/fax +48 25 644-59-59
email: leszczb@ap.siedlce.pl

Henryk Matok
Department of Biochemistry and Molecular Biology,
University of Podlasie, Siedlce, Poland
B. Prusa 12, 08-110 Siedlce, Poland
Phone +48 25 643 1211,
Phone/fax +48 25 644-59-59

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Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.

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