%0 Journal Article
%T Effect of Free Air CO2 Enrichment (FACE) on phenolic acid metabolism<br>不同氮素水平下冬小麦叶片酚酸类物质代谢对FACE的响应
%A CAO Ji-Ling
%A ZHU Jian-Guo
%A MA Hong-Liang
%A ZHU Chun-Wu
%A YAN Jian
%A ZENG Qing
%A KOU Tai-Ji
%A XIE XU-Bin
%A <br>曹际玲
%A 朱建国
%A 马红亮
%A 朱春梧
%A 颜 建
%A 曾 青
%A 寇太记
%A 谢祖彬
%J 中国生态农业学报
%D 2009
%I 
%X Effect of elevated pCO2 on phenolic acid metabolism in the leaves of winter wheat under low N (150 kg·hm-2) and normal N (250 kg·hm-2) levels was determined via FACE. The results show different impacts of elevated pCO2 on the contents of salicylic acid, p-Hydroxybenzoic acid, cinamic acid, ferulic acid and vanillic acid, as well as phenylalnine ammonialyase (PAL) activity in winter wheat leaves under low N and normal N levels. At 1ow N level, salicylic acid, p-Hydroxybenzoic acid, cinamic acid, ferulic acid and vanillic acid are respectively significantly enhanced by 33.7%, 119.6%, 26.7%, 39.9% and 28.6% due to 30.9% increase in phenylalnine ammonialyase activity under elevated pCO2. This, however, does not change significantly under normal N level. Hence the influence of elevated pCO2 on phenolic acid metabolism in winter wheat leaf depends on N supply. It is highly important to determine appropriate fertilization rate in elevated CO2 conditions. Furthermore, total phenol content shows the same variation trend as that of salicylic acid, p-Hydroxybenzoic acid, cinamic acid, ferulic acid and vanillic acid; and 79.6%~151.4% total phenol variation is caused by these acids changes. It then suggests that total phenol content increase in winter wheat leaf is partly accounted for enhanced phenolic acid metabolism under elevated pCO2. Under low N level, the rise in atmospheric CO2 may indirectly affect wheat-weed relationship by changing phenolic acid metabolism.
%K Elevated CO2
%K Nitrogen level
%K Winter wheat
%K Allelochemicals
%K Total phenol
%K Phenolic acid
%K Phenylalnine ammonialyase (PAL)<br>CO2浓度升高
%K 氮水平
%K 小麦
%K 化感物质
%K 总酚
%K 酚酸类物质
%K 苯丙氨酸解氨酶(PAL)
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=A4378BAAE51B67FECEAF110C00BDE2FC&yid=DE12191FBD62783C&vid=BCA2697F357F2001&iid=94C357A881DFC066&sid=2C8B50BA95995EA2&eid=2EA35D7E5C9A6E66&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=0&reference_num=30