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《铬胁迫对青菜(Brassica chinensis L.)植物螯合肽含量及抗氧化特性的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、农业环境科学学报2011,30(5):843—848JournalofAgro-EnvironmentScience铬胁迫对青菜(Brassicachinensis及抗氧化特性的影响L.)植物螯合肽含量宋相帝1,吕金印卜,邸丽俊2,刘晓婷1,叶庆富3(1.西北农林科技大学生命科学学院,陕西杨凌712100;2.西北农林科技大学理学院,陕西杨凌712100;3.浙江大学核农所,杭州310029)摘要:选用不同耐铬胁迫青菜品种春油l号和青伏令,采用不同浓度C一处理,测定青菜抗氧化酶活性及植物螫合肽含量等牛理指标。结果表明,随着C,
2、处理浓度升高,两种青菜叶片抗氧化酶活性、酸溶性SH、植物螯合肽(PCs)及谷胱甘肽(GSH)含量均呈增加趋势(P3、差异较大。关键词:铬;青菜;植物螫合肽;抗氧化酶中图分类号:Q945.78文献标志码:A文章编号:1672—2043(2011)05_0843—06EffectsofChromiumStressontheContentofPhytochelatinsandAntioxidativeCharacteristicsinBrassicachinensisL.SONGXiang-dil,LVJin-yin卜,DIIj_jun2,LIUXiao-tin91,YEQing-fu3(1.ColegeofLifeSciences。Northw4、estA&FUniversity,Yanking712100,China;2.ColegeofSciences,NorthwestA&FUniversity,Yanking712100,China;3.InstituteofNuclear-AgriculturalScience,ZhejiangUniversity,Hangzhou310029,China)Abstract:Thecontentofphytochelatinsandtheactivitiesofantioxidativeenzymesinvarietiesof5、ChunyoulandQingfulingwereinvestigat-edbyhydroponicexperiments.TheresultsshowedthattheactivitiesofantioxidantenzymesandthecontentofacidsolubleSH,phy-toehelatins(PCs)andreducedglutathione(GSH)increasedwiththeincreaseofC,concentrationforvarietiesofChunyou1andQingfuling6、(P<0.05);Undertheconcentrationof300nag·L。C—treatment,theactivitiesofsuperoxidedismutase(SOD),peroxidase(POD),catalase(CAT)inQingfulingwere24.2%。41.7%and21.4%hisherthancontrol。andtheactivitiesoftheseenzymesinChunyoulwere37.2%,70.7%,43.o%hisherthancontrol,respectively7、,PCscontentWas3.17timesasmucha8controlinChunyoul,anditwas1.71timesasmuch8scontwlinQingfuling.ChunyoulWasmoreCr-resistaneethanQingfulingandappearedhigheractivitiesofantioxidativeenzymesandc彻一tentofPCs.,11lephysiologicalrespondencevariedsignificantlybetweendifferentva8、rietiesofBrassicachinensisLunderCPstress.Keywords:chromium:BrassicachinensisL;phytochelatins;antioxidativeenzymes铬是环境中毒性较大的致畸、致突变的重金属污染元素之
3、差异较大。关键词:铬;青菜;植物螫合肽;抗氧化酶中图分类号:Q945.78文献标志码:A文章编号:1672—2043(2011)05_0843—06EffectsofChromiumStressontheContentofPhytochelatinsandAntioxidativeCharacteristicsinBrassicachinensisL.SONGXiang-dil,LVJin-yin卜,DIIj_jun2,LIUXiao-tin91,YEQing-fu3(1.ColegeofLifeSciences。Northw
4、estA&FUniversity,Yanking712100,China;2.ColegeofSciences,NorthwestA&FUniversity,Yanking712100,China;3.InstituteofNuclear-AgriculturalScience,ZhejiangUniversity,Hangzhou310029,China)Abstract:Thecontentofphytochelatinsandtheactivitiesofantioxidativeenzymesinvarietiesof
5、ChunyoulandQingfulingwereinvestigat-edbyhydroponicexperiments.TheresultsshowedthattheactivitiesofantioxidantenzymesandthecontentofacidsolubleSH,phy-toehelatins(PCs)andreducedglutathione(GSH)increasedwiththeincreaseofC,concentrationforvarietiesofChunyou1andQingfuling
6、(P<0.05);Undertheconcentrationof300nag·L。C—treatment,theactivitiesofsuperoxidedismutase(SOD),peroxidase(POD),catalase(CAT)inQingfulingwere24.2%。41.7%and21.4%hisherthancontrol。andtheactivitiesoftheseenzymesinChunyoulwere37.2%,70.7%,43.o%hisherthancontrol,respectively
7、,PCscontentWas3.17timesasmucha8controlinChunyoul,anditwas1.71timesasmuch8scontwlinQingfuling.ChunyoulWasmoreCr-resistaneethanQingfulingandappearedhigheractivitiesofantioxidativeenzymesandc彻一tentofPCs.,11lephysiologicalrespondencevariedsignificantlybetweendifferentva
8、rietiesofBrassicachinensisLunderCPstress.Keywords:chromium:BrassicachinensisL;phytochelatins;antioxidativeenzymes铬是环境中毒性较大的致畸、致突变的重金属污染元素之
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