EJPAU 2007. Urbańska A. LOCATION AND VARIABILITY OF CATALASE ACTIVITY WITHIN APHIDS

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.

2007
Volume 10
Issue 4

Topic:

Biology

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Urbańska A. 2007. LOCATION AND VARIABILITY OF CATALASE ACTIVITY WITHIN APHIDS, EJPAU 10(4), #38.
Available Online: http://www.ejpau.media.pl/volume10/issue4/abs-38.html

LOCATION AND VARIABILITY OF CATALASE ACTIVITY WITHIN APHIDS

Anna Urbańska
Department of Biochemistry and Molecular Biology, University of Natural Sciences and Humanities in Siedlce, Poland

ABSTRACT

This paper concerns with the catalase (CAT) activity in the grain aphid Sitobion avenae (F.),
in particular its location/distribution within the body tissues and variability in consequence of the chemical compounds of the aphid diets. There is specified that the CAT activity is ‘focused’ within the midgut, whereas the salivary secretions lack of the CAT. Dietary o-dihydroxyphenolics i.e. caffeic acid, (+) – catechin and dihydroxyphenylalanine, similarly to hydrogen peroxide (H₂O₂) show inductive effects on the CAT activity. Moreover, ingestion of the chemicals present within wheat foliages also has significant positive effect on the CAT activity of S.avenae. Role of the CAT activity for antioxidant response of S.avenae against the o-diphenolics is argued.

Key words: catalase (CAT), CAT activity, grain aphid, Sitobion avenae, o-dihydroxyphenolic compound, hydrogen peroxide H₂O₂).

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

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.