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1、BotanicalResearch植物学研究,2015,4(5),107-115PublishedOnlineSeptember2015inHans.http://www.hanspub.org/journal/brhttp://dx.doi.org/10.12677/br.2015.45013EffectofIrrEExpressiononthePhysiologyandAntioxidantEnzymesinBrassicanapusL.underNaturalDroughtStressQilinDai1,Juan
2、Yang1,JinlingWang2,XuemeiZhong1,MingliMa1,XucaiLv1,JinWang3,ShizhangDu2*1SchoolofLifeScienceandEngineering,SouthwestUniversityofScienceandTechnology,MianyangSichuan2MianyangNormalCollege,MianyangSichuan3BiotechnologyResearchInstitute,ChineseAcademyofAgricultural
3、Sciences,Beijing*Email:daiqilinmj@sina.comthththReceived:Oct.6,2015;accepted:Oct.24,2015;published:Oct.29,2015Copyright©2015byauthorsandHansPublishersInc.ThisworkislicensedundertheCreativeCommonsAttributionInternationalLicense(CCBY).http://creativecommons.org/li
4、censes/by/4.0/AbstractThetolerantresponsestodroughtstressinIrrE-transgenicBrassicanapusL.andnon-transgenicBrassicanapusL.werestudied.TheresultsshowedthatwatercontentinIrrE-transgenicandnon-transgenicleavesofrapeseedgraduallydecreasedwiththedropofsoilwatercontent
5、inpotsduring0-35dandtheircontentsreachedtheminimumvalueafter35dundernaturaldroughtconditionsandthenincreasedgraduallyaftertherestorationofwatersupply.Thecontentofchlorophyll,solubleproteinandmalondialdehyde(MDA),andtheSODandPODactivityinleavesofBrassicanapusL.we
6、reincreasedgraduallyduring0-35dandtheircontentsreachedthemaximalvalueafter35dundernaturaldroughtconditionsandthendecreasedgraduallyaftertherestorationofwatersupply.Butthewatercontent,chlorophyllcontent,solubleproteincontentandtheactivityofperoxidase(POD)andsuper
7、oxidedismutase(SOD)inleavesoftransgenicBras-sicanapusLwerehigherthanthoseinnon-transgenicBrassicanapusL.,whilethecontentofma-lonaldehyde(MDA)intransgenicBrassicanapusL.waslowerthannon-transgenicBrassicanapusL.during0-35dunderdroughtstressandtherestorationofwater
8、supply.Therefore,theresultsfromaboveindicatedthatIrrEasthetranscriptionregulationfactor,whichwasderivedfromtheradiationresistantbacteria,wasinvolvedinthetoleranceresp
