[HMIm]Br用至論文Effects oftheionicliquid1-hexyl-3-methylimidazoliumbromideon rootgravitropismin Arabidopsis seedlings
[HMIm]Br（1-己基-3-甲基咪唑溴鹽，CAS號：85100-78-3）用至論文Effects oftheionicliquid1-hexyl-3-methylimidazoliumbromideon rootgravitropismin Arabidopsis seedlings
論文信息
標題：Effects oftheionicliquid1-hexyl-3-methylimidazoliumbromideon rootgravitropismin Arabidopsis seedlings
作者：Liang Zhang, TianqiWang, FengxiaZheng, LingyuMaa, JingyuanLi
期刊：EcotoxicologyandEnvironmentalSafety125(2016)107–115
摘要：The toxiceffectsofionicliquids(ILs)haveattractedincreasingattentioninrecentyears.However,the
knowledgeaboutthetoxiceffectsofILsontropisminorganismsremainsquitelimited.Inthisstudy,the
effects of1-hexyl-3-methylimidazoliumbromide[C6mim]Br onrootgravitropismwereevaluatedusing
Arabidopsis seedlings. Ourresultsshowedthattherootgrowthandgravityresponseweresignificantly
inhibited withincreasingILconcentration.[C6mim]Br treatmentaffectedtheamountanddistribution
pattern ofamyloplastsinrootcapcomparedwithcontrols.Theauxindistributionmarkedwith DR5rev::
VENUS wasalteredinIL-treatedseedlings.Thesignalintensityandgeneexpressionofauxinefflux
carriers PIN2andPIN3wereobviouslydecreasedbyILstress.Moreover,asconsequencesinresponseto
gravitystimulus,theasymmetricDR5signalsincontrolrootapexwereimpairedbyILtreatment.The
predominant PIN2signalsalongthelower flank ofrootandPIN3polarizationincolumellacellswerealso
significantly reducedinseedlingsexposedtoIL.Ourresultssuggestthattheionicliquid[C6mim]Br
affects theamountanddistributionofamyloplastsanddisturbsthedeploymentofPIN2andPIN3,thus
impairing auxin flowsinresponsetogravitystimulusandcausingdeficient rootgravitropismin Arabi-
dopsis seedlings.
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