Antioxidant defense mechanisms of cereal aphids based on ascorbate and ascorbate peroxidase
Abstract: Effects of plant o-dihydroxyphenols on ascorbate (ASA) content and ascorbate peroxidase (APOX) activity in the tissues of the grain aphid Sitobion avenae and the bird cherry-oat aphid Rhopalosiphum padi were studied. Among the aphid morphs, the highest ASA content and APOX activity were noted for larvae and the lowest for wingless apterae. When exposed to o-dihydroxyphenols, aphids of both species contained significantly lower concentrations of ASA and higher APOX activity than the controls. Among the studied compounds, caffeic acid had the strongest effect on ASA-based antioxidant responses in that caffeic acid caused a 5-fold decrease of ASA in aphid tissues. The influences of the plant o-dihydroxyphenols on antioxidant defense mechanisms within the cereal aphid species are discussed.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Antioxidant defense mechanisms of cereal aphids based on ascorbate and ascorbate peroxidase ; volume:64 ; number:5 ; year:2009 ; pages:994-998 ; extent:5
Biologia ; 64, Heft 5 (2009), 994-998 (gesamt 5)
- Urheber
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Łukasik, Iwona
Goławska, Sylwia
Wójcicka, Agnieszka
- DOI
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10.2478/s11756-009-0164-x
- URN
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urn:nbn:de:101:1-2409221614326.607194411239
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:20 MESZ
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Beteiligte
- Łukasik, Iwona
- Goławska, Sylwia
- Wójcicka, Agnieszka
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