| Abstract Detail
Biotic and abiotic stress Nourimand, Maryam [1], Todd, Christopher D. [2]. Ureide Metabolism in Response to Cadmium Stress in Arabidopsis. Plants apply various molecular, physiological and morphological strategies in response to undesirable environmental conditions. One of the possible responses which may contribute to surviving stressful conditions is accumulation of ureides. Plant ureides are nitrogen rich compounds derived from purines. They have been investigated for their role in providing plants with efficient N transport, but they may protect plants against oxidative damage caused by many abiotic stresses. In this work we examined ureide pathway metabolite accumulation and transcript levels in response to Cadmium stress. Cadmium (as 0-200µM CdCl2) was used to induce oxidative stress in Arabidopsis thaliana, ecotype Col-0. HPLC measurements of ureide levels combined with RT-PCR comparisons of transcript levels demonstrated ureide accumulation in Cd-treated plants. This coincided with decreases in specific transcripts responsible for ureide catabolism. In order to evaluate the impact of ureides on Cd resistance, T-DNA insertion mutants in ureide metabolic genes were assessed using the same Cd concentrations. We provide evidence for a protective role of these compounds in response to oxidative stress. Log in to add this item to your schedule
1 - University of Saskatchewan, Biology, W.P. Thompson Building, 112 Science Place, Saskatoon, SK, S7N 5E2, CAN 2 - University of Saskatchewan, Biology, 112 Science Place, W.P.Thompson Bld, Saskatoon, SK, S7N 5E2, Canada
Keywords: Ureides environmental stress Purine stress tolerance Nitrogen Assimilation.
Presentation Type: Oral Paper:Papers for Topics Session: 20 Location: Salon 13/14/The Shaw Conference Centre Date: Monday, July 27th, 2015 Time: 2:00 PM Number: 20002 Abstract ID:932 Candidate for Awards:None |