节点文献

葡萄叶片饲喂的14C-水杨酸对高温胁迫的应激反应

Response of 14C-salicylic Acid to Heat Stress After Being Fed to Leaves of Grape Seedlings

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 刘悦萍黄卫东王利军

【Author】 LIU Yue ping, HUANG Wei dong, WANG Li jun (College of Horticulture Sciences, China Agricultural University, Beijing 100094)

【机构】 中国农业大学园艺学院中国农业大学园艺学院 北京100094北京100094北京100094

【摘要】 采用具 8片功能叶的葡萄幼苗 ,摘除第 1、2、8片叶 ,在中部第 5片叶 (L 5 )上饲喂14 C SA ,分别对L 5对侧上方叶 (L 4 )和下方叶 (L 6 )进行 4 0± 0 .5℃高温处理。结果发现 ,高温处理增加了饲喂叶14 C SA的向外运转量 ,改变了14 C SA在各器官的分配比例。高温处理L 4或L 6叶后 ,处理叶片中的14 C SA积累量至少为对照的 3倍以上 ,植株其余叶片 (L 3或L 7)中的14 C SA积累量则低于对照 ;14 C SA向茎段的分配量与高温处理叶的位置相关。另外 ,高温改变了14 C SA向饲喂叶上侧和下侧的分配比例 ,最终均表现为向高温处理部位一侧的运输量增加。直接用仪器测得的14 C比放射强度至少有 70 %以上是14 C SA ,表明SA在运转中的代谢不多。

【Abstract】 All leaves of grape ( Vitis vinifera×V. labrussa L. cv. Jingxiu) seedlings were removed except the 3rd, 4th, 5th, 6th, and 7th ones. The 5th leaf was fed with 14 C SA, and the 4th or 6th leaf was at a high temperature of 40±0.5℃. There were more 14 C SA being transported out from the 5th leaf at high temperature than at normal temperature and changed the ratio of 14 C SA distribution in each organ. The accumulation of 14 C SA in 4th or 6th leaf treated at high temperature was at least three times as much as that at normal temperature. The distribution of 14 C SA in other leaves (the 3rd and 7th leaves) decreased; more 14 C SA accumulated in stems which adjacent to the 4th or 6th leaf treated at high temperature. In addition, more 14 C SA transported upwards or downwards while one of its leaf treated at high temperature. The ratio of radioactivity of 14 C assayed after SA being extracted to direct assay with apparatus was more than 70%.

【关键词】 葡萄高温胁迫14C-水杨酸
【Key words】 GrapeHeat stress14 C salicylic acid
【基金】 国家自然科学基金资助项目 ( 3 0 0 70 5 3 1)
  • 【文献出处】 中国农业科学 ,Scientia Agricultura Sinica , 编辑部邮箱 ,2003年06期
  • 【分类号】Q945
  • 【被引频次】23
  • 【下载频次】180
节点文献中: 

本文链接的文献网络图示:

本文的引文网络