CAJ | 학술논문

　　以大豆（Glycine max ．）为试验材料，探讨臭氧（O3）浓度升高〔（80±10） nL?L-1〕对大豆根系内源激素含量及活性氧代谢系统的影响。研究表明：在大豆整个生育期内，O3胁迫处理下的大豆根系脱落酸（ABA）含量、玉米素核苷（ZR）含量与对照相比显著（P＜0．05）升高，生长素（IAA）含量显著（ P＜0．05）降低，内源激素间平衡改变， IAA/ABA、AR/ABA及（IAA＋ZR）/ABA比值显著（P＜0．05）降低，超氧阴离子产生速率、MDA含量、POD活性和脯氨酸含量与对照相比显著（P＜0．05）升高，SOD和CAT活性显著（ P＜0．05）降低。O3胁迫在一定程度上可以改变内源激素的含量及激素间的平衡比例，提高大豆的抗氧化能力，但是，长时间的胁迫作用将导致抗氧化系统氧化损伤，从而使膜脂过氧化程度加重，对大豆表现为伤害效应。
　　이대두（Glycine max ．）위시험재료，탐토취양（O3）농도승고〔（80±10） nL?L-1〕대대두근계내원격소함량급활성양대사계통적영향。연구표명：재대두정개생육기내，O3협박처리하적대두근계탈락산（ABA）함량、옥미소핵감（ZR）함량여대조상비현저（P＜0．05）승고，생장소（IAA）함량현저（ P＜0．05）강저，내원격소간평형개변， IAA/ABA、AR/ABA급（IAA＋ZR）/ABA비치현저（P＜0．05）강저，초양음리자산생속솔、MDA함량、POD활성화포안산함량여대조상비현저（P＜0．05）승고，SOD화CAT활성현저（ P＜0．05）강저。O3협박재일정정도상가이개변내원격소적함량급격소간적평형비례，제고대두적항양화능력，단시，장시간적협박작용장도치항양화계통양화손상，종이사막지과양화정도가중，대대두표현위상해효응。
The effects of O3 concentration elevation 〔(80 ± 10) nL?L-1〕 on soybean roots endogenous hormones and reactive oxygen metabolism was studied in this paper .Compared with the control ,the elevated O3 concentration in-duced an increase of abscisic acid (ABA) content and Zeatin riboside (ZR) content ( P<0 .05) ,and a decrease of growth hormone (IAA) content (P<0 .05) .The balance of endogenous hormones was changed ,and the specific value of IAA/ABA ,AR/ABA and (IAA+ZR)/ABA was decreased ( P<0 .05) .The production rate of superoxide anion , the malondialdehyde (MDA) content POD activity and the proline content were increased (P<0 .05) and the SOD and CAT activity were decreased (P<0 .05) .To a certain extent ,ozone stress changed the soybean endogenous hormones level and balance and improved its antioxidant ability .However ,constant ozone stress could cause the anti-oxidant sys-tem damage ,exacerbate the membrane lipid peroxidation ,and injure the soybean .