| 阴离子通道参与了harpin_(Pss)诱导的烟草细胞早期防卫反应的信号传导 |
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| 引用本文： | 邱金龙,金巧玲,柳念祖,王钧.阴离子通道参与了harpin_(Pss)诱导的烟草细胞早期防卫反应的信号传导[J].分子细胞生物学报,1999(1). |
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| 作者姓名： | 邱金龙 金巧玲 柳念祖 王钧 |
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| 作者单位： | 中国科学院上海植物生理研究所，中国科学院上海植物生理研究所，中国科学院上海植物生理研究所，中国科学院上海植物生理研究所 上海 200032，上海 200032，上海 200032，上海 200032 |
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| 摘 要： | 无论在harpin_(Pss)之前、同时、还是之后向烟草植株或悬浮培养系加阴离子通道的抑制剂DIDS(4,4’-diisothiocyanatostilbene-2,2’-disulfonic acid)或AgC(anthracene-9-carboxylic acid),都可以抑制harpin_(Pss)诱导的烟草植株过敏反应和悬浮细胞的活性氧的释放及胞外碱性化。DIDS和A9C还可以抑制harpin_(Pss)诱导的Ca~(2 )内流。而且DIDS的抑制效率比A9C高。推测质膜上的阴离子通道对钙离子通道有着正调节作用,harpin_(Pss)通过阴离子通道和钙离子通道介导的信号传导途径,调节胞内Ca~(2 )浓度,从而启动这些防卫反应。
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| 关 键 词： | 阴离子通道 Ca~(2 ) harpin_(Pas)烟草 活性氧释放 胞外碱性化 过敏反应 |
INVOLVEMENT OF ANION CHANNEL IN SIGNAL TRANSDUCTION OF EARLY DEFENSE RESPONSES ELICITED BY HARPIN_(Pss) IN TOBACCO |
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| QIU Jin Long JIN Qiao Ling LIU Nian Zu WANG Jun.INVOLVEMENT OF ANION CHANNEL IN SIGNAL TRANSDUCTION OF EARLY DEFENSE RESPONSES ELICITED BY HARPIN_(Pss) IN TOBACCO[J].Journal of Molecular Cell Biology,1999(1). |
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| Authors: | QIU Jin Long JIN Qiao Ling LIU Nian Zu WANG Jun |
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| Abstract: | No matter when anion channel inhibitors, DIDS ( 4, 4'-diisothiocyanatostilbene-2, 2'-disulfonic acid) and A9C (anthracene-9-car-boxylic acid) added (before, at the same time of or after harpinPss treatment), they can inhibit harpinpss -induced hypersensitive response in tobacco seedlings and release of active oxygen and extracellular alkalinization in tobacco suspension cells. DIDS and A9C also inhibit
harpinPss -induced Ca2 influx. In all these cases, DIDS is more efficient than A9C. It is postulated that anion channel positively regulates calcium channel in plasma membrane, and harpinp.. may function through signal transduction mediated by anion channel and calcium channel to regulate cellular Ca2 concentration and defense responses. |
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| Keywords: | Anion channel Ca~(2 ) Harpin_(pas) Tabacco Oxidative burst Extracellular alkalinization Hypersensitive response |
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