外源NO供体硝普钠对水稻幼根生长的调控效应  

Effect of Exogenous Nitric Oxide Donor Sodium Nitroprusside on the Growth of Rice Root

作　　者：刘和兵 肖强[2] 

机构地区：[1]湖北省恩施市农业局,湖北恩施445000 [2]生物资源保护与利用湖北省重点实验室(湖北民族学院),湖北恩施445000

出　　处：《湖北民族学院学报（自然科学版）》2009年第2期130-132,共3页Journal of Hubei Minzu University(Natural Science Edition)

基　　金：湖北省教育厅科学技术研究项目(Q20092901)

摘　　要：研究了外源一氧化氮(nitric oxide,NO)供体硝普钠(sodium nitroprusside,SNP)对水稻萌发、生长以及幼根中IAA氧化酶的影响效应.结果表明:低浓度NO可促进水稻种子萌发和幼根生长,并促进不定根的产生,高浓度的NO则有抑制作用;进一步研究证实,不定根数目的产生与幼根中IAA氧化酶的活性呈正相关.The effects of sodium nitroprusside （SNP）, an nitric oxide （NO） donor, on the growth of rice root and the activity of indoleacetic acid oxidase in root of rice were studied. The results showed that the germination and development of main root and adventitious root was promoted by low concentration SNP, but inhibited by high concentration SNP. It was proved that the number of adventitious roots was positively related with the activity of indoleaeetic acid oxidase.

关 键 词：NO 水稻 根 IAA氧化酶 

分 类 号：Q945.34[生物学—植物学]