| 干旱胁迫下杏叶片中茉莉酸积累的作用 |
| |
| 引用本文： | 葛云侠,姚允聪,许雪峰,张杰,韩振海.干旱胁迫下杏叶片中茉莉酸积累的作用[J].园艺学报,2007,34(3):575-578. |
| |
| 作者姓名： | 葛云侠 姚允聪 许雪峰 张杰 韩振海 |
| |
| 作者单位： | (中国农业大学园艺植物研究所, 北京100094; 沈阳农业大学生物科学技术学院, 沈阳110161; 北京农学院植物科学技术系, 北京102206) |
| |
| 摘 要： | 以耐旱的山杏和非耐旱的龙王帽实生苗为试材, 研究干旱胁迫下茉莉酸( JA) 的作用机制。结果表明: 在停水后第12天, 即植株将衰老时, 山杏叶片JA含量升高3倍。整个干旱过程中山杏和龙王帽根中内源JA含量都变化不大。自然干旱时杏的脂氧合酶(LOX) 活性表现为叶片升高, 在根中无显著变化。用外源50 mmol·m-3 JA喷洒山杏叶片后促进了叶绿素的降解, 加速了叶片衰老过程。同时在旱后复水时发现叶子完全干枯的山杏又能长出新叶而复活, 而叶片延迟衰老的龙王帽却不能复活。因此推测JA在干旱胁迫下是通过促使叶片衰老而使植物减少水分散失、以此来抵抗逆境的。
|
| 关 键 词： | 杏 干旱 茉莉酸 衰老 叶片 |
| 文章编号： | 0513-353X（2007）03-0575-04 |
| 修稿时间： | 2006-11-142007-04-23 |
The Role of Jasmonic Acid Induced by Dought Stress in Apricot Leaves |
| |
| GE Yun-xia,YAO Yun-cong,XU Xue-feng,ZHANG Jie,HAN Zhen-hai.The Role of Jasmonic Acid Induced by Dought Stress in Apricot Leaves[J].Acta Horticulturae Sinica,2007,34(3):575-578. |
| |
| Authors: | GE Yun-xia YAO Yun-cong XU Xue-feng ZHANG Jie HAN Zhen-hai |
| |
| Institution: | (;1. Institute of Horticultural Plants, College of Agriculture and Biotechnology, China Agricultural University, Beijing 100094,China;2.College of Biotechnology, Shenyang Agricultural University, Shenyang 110161, China;3.Departm ent of Plant Scienceand Technology, College of Beijing Agriculture, Beijing 102206,China) |
| |
| Abstract: | Plants of ap ricot (DT: drought-tolerance genotype Prunus armeniaca L. var. Ansu Maxim.and DS: drought-sensitive genotype Prunus arm eniaca vulgaris Lam. ‘Longwangmao’) were grown in pots ofpeat2based compost in order to examine the role of JA under drought stress. GC /MS analysis indicated that JAlevels in leaves increased by 3 times in DT on day 12 since waterwithheld while it showed very little variationin the whole drying period in DS. There was no significant detectable difference in the concentration of JA inroots of well2watered and unwatered two ap ricot p lants. The LOX activity in old leaves of both increased whilewaterwaswithheld. However, the LOX activity in roots of two ap ricot p lants showed very little variation in theexperiment. Exogenous JA accelerated senescence of leaves in ap ricots by p igment loss. After this drying period, the p lants were rewatered. Two months after rewatering, twelve of the eighteen DT lived, whereas all ofthe eighteen DS died. These results suggest that the transient accumulation of JA from leavesmay be necessaryto p romote leaf senescence due to soil drying. |
| |
| Keywords: | Apricot Drought stress Jasmonic acid Senescence Leaf |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《园艺学报》浏览原始摘要信息 |
| 点击此处可从《园艺学报》下载免费的PDF全文 |
|
