局部灼伤对茉莉酸在蚕豆幼苗中运输和分配的影响

来源 :植物学报 | 被引量 : 0次 | 上传用户：loakl

【摘要】

：

用示踪技术研究了3H-JA (jasmonic acid)在双子叶植物蚕豆(Vicia faba L.)中的运输和分配规律以及局部灼伤对其运输与分配的影响.外源3H-JA 能够以高于4～5 cm*min-1的速率在蚕

【作者】

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刘新张蜀秋娄成后于风义

【机构】

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莱阳农学院基础部,中国农业大学生物学院,中国农业科学院原子能利用研究所,Department of Basic Subject,College of Biological Sciences,Insti

【出处】

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植物学报

【发表日期】

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2004年期

【关键词】

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茉莉酸运输分配伤胁迫伤信号蚕豆 jasmonic acid transport distribution wounding stress woundi

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用示踪技术研究了3H-JA (jasmonic acid)在双子叶植物蚕豆(Vicia faba L.)中的运输和分配规律以及局部灼伤对其运输与分配的影响.外源3H-JA 能够以高于4～5 cm*min-1的速率在蚕豆幼苗体内向上和向下运输.幼叶局部灼伤能提高3H-JA的向上运输能力,促进3H-JA向受伤部位的调运;增加3H-JA向成熟叶片下表皮的运输分配比率;阻止3H-JA从受伤部位的向外输出.据此推测,伤胁迫下JA的运输与分配的改变可能与植物体防御伤反应密切相关,并有可能参与了对气孔运动的调控.

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局部灼伤对茉莉酸在蚕豆幼苗中运输和分配的影响

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