| 不同光照及赤霉素处理对菟丝子寄生关系建立的影响 |
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| 引用本文： | 李东霄,张辉煌,张国广,陈亮.不同光照及赤霉素处理对菟丝子寄生关系建立的影响[J].热带亚热带植物学报,2009,17(5):458-464. |
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| 作者姓名： | 李东霄 张辉煌 张国广 陈亮 |
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| 作者单位： | 1. 河南科技学院,河南,新乡,453003;厦门大学生命科学学院,福建,厦门,361005
2. 厦门大学生命科学学院,福建,厦门,361005 |
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| 摘 要： | 首次使用LED作为光源,研究不同光照条件及GA3对菟丝子(Cuscuta spp.)弯钩打开、缠绕发生与吸器形成的影响.结果表明,光照信号作为一个必要条件参与了菟丝子对寄主的识别及缠绕发生的调控,而化学信号可能起到一定的促进作用;GA3参与了对菟丝子缠绕发生的调控,但对弯钩打开没有明显的作用.除了典型的光敏色素作用外,还有另一类光反应(HER)参与了上述过程,这类光反应可由879 nm远红光引发,证明菟丝子存在HER,还有Pfr向Pr的暗转化过程,在缠绕发生过程中光敏色素和隐花色素发生相互作用.
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| 关 键 词： | 南方菟丝子 赤霉素 吸器 弯钩 光照 缠绕 |
| 收稿时间： | 2008/12/18 0:00:00 |
| 修稿时间： | 2009/5/14 0:00:00 |
The Effects of Different Lights and Gibberellin on Establishment of Parasitism between Dodder and Its Hosts |
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| LI Dong-xiao,ZHANG Hui-huang,ZHANG Guo-guang and CHEN Liang.The Effects of Different Lights and Gibberellin on Establishment of Parasitism between Dodder and Its Hosts[J].Journal of Tropical and Subtropical Botany,2009,17(5):458-464. |
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| Authors: | LI Dong-xiao ZHANG Hui-huang ZHANG Guo-guang and CHEN Liang |
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| Institution: | 1.Henan college of Science and Technology;Xinxiang 453003;China;2.School of Life Science;Xiamen University;Xiamen 361005;China |
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| Abstract: | The effects of different light treatments and GA3 on hook opening,twining and parasitism of Cuscuta australis were studied using LED as light sources for the first time.The results showed that light was a necessary factor for dodders to parasitize the hosts successfully and chemical signals might facilitate host recognition and twining.GA3 involved in controlling twining response,but no distinct effect on hook opening.Furthermore,besides typical(phytochrome reaction,another photoreaction called HER was invo... |
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| Keywords: | Cuscuta australis Gibberellin Haustorium Hook Light Twining |
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