25030.擬南芥根細胞壁中的果膠含量對植物抗鎘脅迫的影響

1、浙江大學(xué)生命科學(xué)學(xué)院碩士學(xué)位論文擬南芥根細胞壁中的果膠含量對植物抗鎘脅迫的影響姓名：莫基浩申請學(xué)位級別：碩士專業(yè)：植物學(xué)指導(dǎo)教師：鄭紹建20100201浙江大學(xué)碩士學(xué)位論文AbstractAbstractHeavymetalsaleaseriesoftraceelementswithasmallstockontheearthSomeofthemareusefulforcreatures，butmostofthemhaveallobvio

2、ustoxiceffectonorganismsSincemoreandmoreconcemisgiventotheecologicalenvironment，organismsandhumanhealth，theresearchesaboutheavymetaltoxicityandtolerancetoliveshavemadeenormousprogressinrecentyearsHowevermostoftheseresear

3、chesarefocusedontransportersandgeneexpressionintheinternalcelllevel，whilethefunctionofapoplastintheresistancetoheavymetaltoxicitylacksadequateInordertofurtherunderstandtheeffectofapoplastofcellwallonheavymetaltoxicityand

4、tolerance，weadoptedthemosttypicalheavymetalpollutantcadmium(Cd)asobjectandthemutantsofcellwall(celluloseandpectin)ofArabidopsisasplantmaterialsWeinvestigatedthegrowthcondition，theaccumulationofCdintheshoots，rootsandrootc

5、ellwallofArabidopsisandthechangesofmonosaccharidecompositionofrootcellwall，andalsomeasuredtheabsorptiontoothernutrientelementsUndertheCdtreatmentTheresultsshowedthat：1UndertheCdtreatment，therootgrowthshowedasignificantin

6、hibitionIncs6354、Ⅳithrichpectincompared晰thitswildtype，relativerootelongationhadsubstantiallyimprovement，butqual2oflackingpectindidnotshowsignificantdifferenceofrelativerootelongmionwiththewildtype2UndertheCdtreatmentthec

7、ontentofCdintherootofcs6354increasedbyabout50％compared、衍ththewildtypeIntherootofmutantqual2thecontentofCddecreased，buttheshootshowedahigheraccumulationIncs6354，theratioofCddistributedinrootsWas25％but10％inqual2，whichindic