%0 Journal Article
%T Effect of Ce(Ⅲ)on Photochemical Reaction Activity in Soybean Seedlings Under Supplementary UV-B Radiation Stress<br>Ce(Ⅲ)对UV-B辐射胁迫下大豆幼苗光化学反应的影响
%A LI Jin-jin
%A LI Jin-jin
%A ZHOU Qing
%A <br>李津津
%A 李靖梅
%A 周青
%J 环境科学
%D 2007
%I 
%X Effect of Ce(III) on photochemical reaction activity in soybean seedlings exposed to ultraviolet-B radiation (UV-B, 280 - 320 nm) was studied with hydroponics under laboratory conditions. The results showed that CeCl3 (20 mg x L(-1)) could improve photosynthesis action and net photosynthesis rate, the Mg(2+) -ATPase activeness, the photosynthetic phosphorylation active and stimulate the activity of Hill reaction (23.2% - 14.3%). And Ce(III) could alleviate the inhibition of UV-B (T1 = 0.15 W x m(-2) and T2 = 0.45 W x m(2-)) on the four indexes above in plants to a certain extent, and the decreasing degrees of the indexes under Ce(III) and UV-B stress were lower than those only under UV-B stress, which were 36.6% - 15.9% Ce(III) + T1 ], 65.6% - 33.2% Ce(III) + T2], 50.9% - 23.3% (T1), 77.3% - 51.4% (T2) respectively. The dynamic data indicated that Ce(III) could alleviate the inhibition of UV-B on the four indexes above while promoting without UV-B stress. The results showed that Ce(III) could alleviate the decrease in the net photosynthesis rate by lightening the damage of the photochemical reaction activity on the soybean seedings under UV-B stress.
%K cerium
%K UV-B radiation
%K soybean seedling
%K net photosynthesis rate
%K photochemical reaction activity<br>稀土铈
%K UV-B辐射
%K 大豆幼苗
%K 净光合速率
%K 光化学反应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=BC85E858628321E1C1200E633F0FC663&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=B31275AF3241DB2D&sid=77586D59F496BF38&eid=A5545D8D349C0F70&journal_id=0250-3301&journal_name=环境科学&referenced_num=2&reference_num=15