Changes in amino acid decarboxylation in maize (Zea mays; Poaceae) tissues in response to bird cherry-oat aphid (Rhopalosiphum padi; Aphididae) infestation. (June 2015)

• Record Type: Journal Article
• Authors: Sempruch, Cezary; Leszczyński, Bogumił; Wilczewska, Martyna; Chrzanowski, Grzegorz; Sytykiewicz, Hubert; Goławska, Sylwia; Kozak, Agnieszka; Chwedczuk, Marta; Klewek, Agnieszka
• Is Part Of: Biochemical systematics and ecology. Volume 60(2015)
• Page Start: 158
• Page End: 164
• Publication Date: 2015-06
• Subjects: Maize -- Rhopalosiphum padi -- Amino acid decarboxylases -- Amino acids -- Plant biogenic amines; Chemotaxonomy -- Periodicals; Biochemical variation -- Periodicals; Ecology -- Periodicals; Biochemistry -- Periodicals; Ecology -- Periodicals; Chimiotaxinomie -- Périodiques; Variation biochimique -- Périodiques; Écologie -- Périodiques; 578.012
• DOI: 10.1016/j.bse.2015.04.017
• Languages: English
• ISSNs: 0305-1978

Abstract

Abstract: The study was focused on changes in the activities of ornithine decarboxylase (ODC), lysine decarboxylase (LDC) and tyrosine decarboxylase (TyDC) in maize seedlings infested by bird cherry-oat aphid ( Rhopalosiphum padi L.). Obtained results showed that the aphid infestation induced LDC activity strongly within tissues of less aphid-settled maize (Waza cv.) during the first week of the infestation in comparison to the control plants and the activity was suppressed after two weeks. However, TyDC activity fluctuated under the aphid infestation. In relation to the control, the enzyme activity was inhibited on the first day, activated after the first week and reduced again two weeks into the experiment. A significant reduction in ODC activity was also observed in seedlings of aphid-infested maize Waza cv. during the first week. In a more susceptible maize cv. (Złota Karłowa), an increase in LDC and TyDC activities in relation to the control and a simultaneous decrease in ODC activity were noted after the first day of the infestation. After one week of aphid attack, TyDC activity was induced and ODC was inhibited, whereas after two weeks ODC activity was decreased with a simultaneous increase in LDC activity in the Złota Karłowa seedlings. Highlights: Amino acid decarboxylation in maize infested by Ropalosiphum padi was studied. The aphid feeding disturbed LDC, ODC and TyDC activities within maize seedlings. Pattern of the changes was dependent on maize cv. and duration of infestation. LDC was clearly induced in aphid-infested less susceptible maize cv. ODC was more active in not aphid-accepted maize cv. in relation to susceptible one.