Cu胁迫对小白菜生理生化与细胞超微结构的影响

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1、福建农林大学硕士学位论文AbstradAbstractAsamemberofCruciferaeBrassica，Chinesecabbage(BrassicacampestrisL，isaoneortwoyearsherbageplant．Alongwiththefrequentlyuseofbactericideandagreatdealofcontamination，moreandmoreCopperwasinpouredintotheentironment．Itisresultedinthepollutionofsoilandworsevegetable．Copperpollu

2、tionhasbeenaproblemofcosmopolitan．Thethesisstudiedthephotosynthesis，isoenzyme，ultrastructureandthedamnificationofDNAofShanghaiqingandI他yueman，whichwereplantedinhydrponicsolutionaddeddifferentquantityofCopper．Themainconclusionsofinvestigationwereasfollow：1．TheCopperstresshadobviouslytoxiceffectso

3、nShanghaiqingandWuyueman．ItrestrainedthegrowthofShanghaiqingandWuyueman．AlongwiththeincreasingofCopperconcentrationandthetimeofdisposal，bothShanghaiqingandWuyueman"slaminaebecameetiolation、therootslostwater、rootandstembecameblack．Atlasttheplantwiltedandwenttodeath．ShanghaiqingwasmoresensitivetoC

4、opperstressconcludingfromtheappearingtimeanddegreeofsymptom．Therootswereaffectedmorethantheovergroundpartwhenexposedtothesameionconcentrationandsametimeofexposure．2．TheCopperstressrestainedthephotosynthesisofChinesecabbage．Itinducedtothedropofphotosynthesispigments’content，thefellofphotosynthesi

5、s'sintensionandHillreactionactivity．TheactivityofATPasepresentedincreasefirstandreduceafterwardsalongwiththetreatingconcentration．3．StudiedthechangeofChinesecabbage’sisoenzyme(PODandSOD)underCopperstressforthefirsttime．Theresultindicatedthatthedifferencebetweenthenormalandlowconcentrationwasunco

6、nspicuous．ButtheenzymaticactivityincreasedandnewenzymaticcingulumsbroughtwheninthehJ曲concentration．Itshowedthattheenzyme(PODandSOD)ofChinesecabbagechangedinordertotheenvironmentvariation．4．TheultrastmcturechangesofmesophyllcellsinShanghaiqingand14啦yuemanoccurredduringsufferingfromCopperstress，we

7、reabservedusingtransmissionelectron福建农林大学硕：}学位论文AbstracImicroscopy．Theresultshowedthatbothtwovarietiesunderthenormalcondition，variousorgandiesweremorphologicallyintegrated，whenunderCopperStress，thenumberofchloroplastswasredu