%0 Journal Article
%T Effect of enhanced UV-B radiation on polyamine contents and the activity of related enzymines in rice (Oryza sativa L.)<br>UV-B辐射增强对水稻多胺含量及其相关酶活性的影响
%A GUO Yu-Chun
%A LIN wen-Xiong
%A WU Xing-Chun
%A LIANG Kang-Jing
%A LIANG Yi-Yuan
%A <br>郭玉春
%A 林文雄
%A 吴杏春
%A 梁康迳
%A 梁义元
%J 中国生态农业学报
%D 2003
%I 
%X Experimental results show that when the plants are exposed to enhanced UV-B radiation for 7 ~ 14 days,the activities of agrininc decarboxylase (ADC),ornithine decarboxyiase (ODC) and s-adenosylmethionine decarboxylase (SAMDC) in leaves are increased by 165.74%,104.60% and 89.60% in "Shan You63" (Sy63),59.91%,41.30% and 23.68% in "Nancheum" (NC) and 115.93%,14.45% arid-33.01% in IR65600-85,respectively.However,the three enzymic activities turn to decrease with the treatment time increasing (21~28d) and the decreased extents of ODC and SAMDC are much higher than that of ADC,.The activities of ADC and ODC are increased by 89.72% and 3.71% in Sy63 and 73.95 % and 27.38 % in NC exposed to UV-B radiation for 21 ~ 28 days.The activity of ADC is also increased by 94.41% but ODC activity is decreased by 13.57% in the leaves of IR65600-85 compared with the controls.As far as SAMDC is concerned,the enzymic activities in Sy63,NC and IR65600-85 are reduced by 40.06%,19.20% and 38.21% respectively when they are exposed to enhanced UV-B radiation for 21~28 days.The reverse is true in the case of poly-amine oxidase (PAO),indicating its lower activity in earlier treatment courses (7~14d),but much higher activity in late courses (21~28d) compared with the controls.These in turn result in the increased contents of polyamine (PA),especially putrescine (Put) and the results of the experiment have shown their differences in diverse rice genotypes.
%K Rice
%K Enhanced UV-B radiation
%K Polyaminc metabolism<br>水稻
%K UV-B辐射增强
%K 多胺代谢
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=0D72736ACD73D67D&yid=D43C4A19B2EE3C0A&vid=708DD6B15D2464E8&iid=0B39A22176CE99FB&sid=F3583C8E78166B9E&eid=BCA2697F357F2001&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=6&reference_num=8