除草劑的類群及作用機(jī)理電子教案

1、除草劑的類群及作用機(jī)理diquat dibromide salt OHNO2CHC2H5CH3NO2DNOCOHNO2CH3NO2dinosebCNClCldichlobenilCNIIOHBrBrCNOHioxynilbromoxynilSOONSOOCF3perfluidone這些除草劑可以滲入線粒體內(nèi)膜內(nèi)膜，導(dǎo)致相應(yīng)的底物氧化反應(yīng)失控，使細(xì)胞經(jīng)濟(jì)利用能量的特性喪失。metflurazonCF3CF3CH3NClONNNNOClNCH3CH3HnorflurazonCF3ONCH3fluridoneClClCH2O CONHCH3dichlormateNOHClClClOCNH3CH3CN

2、 CHOCF3NHC NCH3CH3OfluometuronNHNNH2pyrichloraminotriazoledifunonn用metflurazon）處理過的植物，胡羅卜素前體八氫番茄紅素 （phytoene）出現(xiàn)積累。CH3CH2CH2CH3CH2CH2NCSCH2CH3O(CH3)2CH(CH3)2CHNCSCH2CCl CHCl(CH3)2CH(CH3)2CHOO CCl2NCSCH2CClEPTC diallate triallatePOOHOHCOOHCH2CCOOHOPCOOHOHPOOCCH2COOHglyphosateshikimate- phosphoenol- 5-

3、enolpyruvylshikimate phosphate P3-phosphate pyruvate 3-phosphate n作為誘導(dǎo)植物和微生物體內(nèi)支鏈氨基酸(異亮氨酸、亮氨酸、纈氨酸)生物合成過程第一階段的關(guān)鍵性酶，乙酰乳酸合成酶(acetolactate synthase, ALS) 催化2個(gè)丙酮酸形成乙酰乳酸和CO2，或催化丙酮酸和-丁酮酸形成乙酰羥丁酸和CO2 ，因此ALS受抑制后支鏈氨基酸合成受阻，進(jìn)而造成蛋白質(zhì)合成和植物細(xì)胞有絲分裂停止。n磺酰脲類、咪唑啉酮類、磺酰胺類、嘧啶水楊酸類除草劑的作用靶標(biāo)都是ALS。CDAACH2CH CH2CH2CH2CHClCH2CNOpro

4、pachlorCH3 CH3ClCH2CNCHOmetachlorCHCH3OOClCH2CNCH3CH3CH2OCH3alachlorCH3OCH2CH2CH3CH2CH3NClCH2CCH3O(CH3)2CHNHPONO2CH3amiprophosmethylNO2NO2NC3H7H7C3H7C3C3H7NNO2NO2CF3SO2NH2oryzalintrifluralinNH COCH(CH3)2CH(CH3)2OCNHClprophamchlorprophamSO2NHCOOCH3NH2ClNH CO CH2CCCH2ClOasulam barbanN NCH3 CH3difenzoquatSO2NHCNHONN NCH3OCH3chlorsulfuronClClN CH COOC2H5CH3C OC OCH3COOCH3CHNClFFClN CH COOCH(CH3)2CH3C OClCHCHCOOCH3Cl2ClClOO CH COOCH3CH3benzoylprop-ethylflamprop-methylflamprop-isopropylchlorfenprop-methyldichlofop-methylOCH2COOHClCl2,4-DClClCH2COOHOCl2,4,5-TCOOHClClClMCPAClCH2COOHOCH32,3