caa a22 4500 445840986 CHVBK 20180317145344.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s10725-011-9567-0 doi (NATIONALLICENCE)springer-10.1007/s10725-011-9567-0 Effect of nitrogen deficiency on antioxidant status and Cd toxicity in rice seedlings [Elektronische Daten] [Ya-Lin Lin, Yun-Yang Chao, Wen-Dar Huang, Ching Kao] Effect of nitrogen (N) deficiency on antioxidant status and Cd toxicity in rice seedlings was investigated. N deficiency resulted in a reduction of shoot growth but not root growth. The contents of N-containing compounds such as nitrate, chlorophyll, and protein decreased in leaves of rice seedlings grown under N deficiency. Accumulation of abscisic acid and H2O2 in leaves was induced by N deficiency. The content of ascorbate and the activities of ascorbate peroxidase, glutathione reductase, and catalase in N-deficient leaves were lower than their respective control leaves. However, glutathione content was not affected and superoxide dismutase activity was increased by N deficiency. Cd toxicity in N-deficient seedlings was more pronounced than that in N-sufficient ones. Pretreatment with ascorbate or L-galactono-1,4-lactone, a biosynthetic precursor of ascorbate resulted in a reduction of Cd toxicity enhanced by N deficiency. N deficiency also resulted in an enhancement of Cd uptake in rice seedlings. The possible mechanism of Cd toxicity enhanced by N deficiency is discussed. Springer Science+Business Media B.V., 2011 Antioxidant system nationallicence Cadmium nationallicence Nitrogen deficiency nationallicence Rice nationallicence ABA : Abscisic acid nationallicence APX : Ascorbate peroxidase nationallicence AsA : Ascorbic acid nationallicence CAT : Catalase nationallicence DAB : 3,3-Diaminobenzidine nationallicence DHA : Dehydroascorbate nationallicence DW : Dry weight nationallicence ELISA : Enzyme-linked immunosorbent assay nationallicence FW : Fresh weight nationallicence GalL : L-galactono-1,4-lactone nationallicence GR : Glutathione reductase nationallicence GSH : Reduced glutathione nationallicence GSSG : Oxidized glutathione nationallicence ROS : Reactive oxygen species nationallicence MDA : Malondialdehyde nationallicence SOD : Superoxide dismutase nationallicence Lin Ya-Lin Department of Agronomy, National Taiwan University, Taipei, Taiwan, ROC aut Chao Yun-Yang Department of Agronomy, National Taiwan University, Taipei, Taiwan, ROC aut Huang Wen-Dar Department of Agronomy, National Taiwan University, Taipei, Taiwan, ROC aut Kao Ching Department of Agronomy, National Taiwan University, Taipei, Taiwan, ROC aut Plant Growth Regulation Springer Netherlands 64/3(2011-07-01), 263-273 0167-6903 64:3<263 2011 64 10725 https://doi.org/10.1007/s10725-011-9567-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10725-011-9567-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lin Ya-Lin Department of Agronomy, National Taiwan University, Taipei, Taiwan, ROC aut NATIONALLICENCE 700 1- Chao Yun-Yang Department of Agronomy, National Taiwan University, Taipei, Taiwan, ROC aut NATIONALLICENCE 700 1- Huang Wen-Dar Department of Agronomy, National Taiwan University, Taipei, Taiwan, ROC aut NATIONALLICENCE 700 1- Kao Ching Department of Agronomy, National Taiwan University, Taipei, Taiwan, ROC aut NATIONALLICENCE 773 0- Plant Growth Regulation Springer Netherlands 64/3(2011-07-01), 263-273 0167-6903 64:3<263 2011 64 10725 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer