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ID:9041930
大小:1.66 MB
页数:8页
时间:2018-04-15
《流式细胞仪检测铝胁迫诱导的花生悬浮细胞程序性死亡》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中国油料作物学报2014,36(1):051-058ChineseJournalofOilCropSciencesdoi:10.7505/j.issn.1007-9084.2014.01.008流式细胞仪检测铝胁迫诱导的花生悬浮细胞程序性死亡黄文静,何虎翼,邓伦武,王爱勤,李创珍,韦善清,何龙飞(广西大学农学院,广西南宁,530004)摘要:以耐铝品种99-1507和铝敏感品种中花2号为材料,应用荧光显微镜和流式细胞仪研究铝对悬浮细胞活性及其线粒体生理的影响,并检测悬浮细胞程序性死亡率。结果表明:铝处理12h后,
2、随着铝浓度增加,悬浮细胞FDA(Fluoresceindiacetate)荧光信号逐渐减弱,PI(PropidiumIodide)荧光信号增强,细胞活性下降;线粒体超氧阴离子含量和H2O2含量随着铝浓度的增加逐渐上升;线粒体膜电位(Δψm)随着铝浓度增加逐渐下降,中花2号下降幅度大于99-1507。50μmol/L及其以上浓度的铝可以显著诱导花生悬浮细胞程序性死亡,铝浓度越高死亡细胞数量越多,同等浓度铝处理下中花2号细胞死亡率高于99-1507,差异达到显著水平。应用流式细胞仪能够准确地检测悬浮细胞程序性死亡的发生
3、情况,细胞程序性死亡率与花生品种的耐铝性呈负相关关系。关键词:花生;悬浮细胞;铝胁迫;细胞程序性死亡;流式细胞仪;线粒体膜电位中图分类号:S565.201,S311文献标识码:A文章编号:1007-9084(2014)01-0051-08AluminuminducedprogramedcelldeathofpeanutsuspensionculturesdetectedbyflowcytometryHUANGWen-jing,HEHu-yi,DENGLun-wu,WANGAi-qin,LIChuang-zhen,
4、WEIShan-qing,HELong-fei(CollegeofAgronomy,GuangxiUniversity,Nanning530004,China)Abstract:Thesuspensioncellapoptoticrateandmitochondriaviabilityoftwopeanutvarieties(99-1507Al-tolerantandZH2Al-sensitive)treatedbydifferentconcentrationaluminum(0,20,100,400μmol/L)
5、wereexaminedbyfluorescencemicroscopeandflowcytometry.TheresultsshowedthatafterAltreatmentfor12h,thefluorescentlightproducedbyFDA(Fluoresceindiacetate)decreased,butincreasedbyPI(PropidiumIodide)withthe·-increaseofAlconcentration,whichindicatedthatpeanutcytoac
6、tivedecreased.ContentofO2andH2O2inmitochondriaincreased,andbothmitochondrialmembranepotentialoftwopeanutvarietiesdecreased,decrementofZH2washigherthan99-1507.50μmol/LandaboveAlcouldsignificantlyinducepeanutsuspensionculturesprogramedcelldeath.Withtheincrease
7、ofAlconcentration,thenumberofprogrameddeathcellinducedbyAlincreased.ThenumberwashigherinZH2thanin99-1507.Thereweresignificantdifferencesbetweenthetwopeanutvarieties.Byusingflowcytometry,theapoptoticofpeanutsuspensioncellcouldbeinspectedaccurately.Therewasane
8、gativecorrelationbetweencellapoptpsisrateandAl-resistanceofpeanut.Keywords:Peanut(ArachishypoganeaL.);Suspensioncell;Aluminumstress;Programedcelldeath;Flowcytometry;Mitochondrialme
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