Sugar and ABA response pathways and the control of gene expression糖的基因表达

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1、SugarandABAresponsepathwaysF.Rooketal.Plant,CellandEnvironment(2006)29,426–434doi:10.1111/j.1365-3040.2005.01477.xSugarandABAresponsepathwaysandthecontrolofgeneexpressionFREDROOK,SOPHIEA.HADINGHAM,YUNHAILI&MICHAELW.BEVANDepartmentofCellandDevelopmentalBiology,JohnInnesCentre,ColneyLane,Norwic

2、hNR47UH,UKABSTRACTcomponentsandregulatorsarespecifictooneresponsepathwayoraresharedbetweenpathways.Increasingly,Sugarsareessentialtoplantgrowthandmetabolism,boththeseinteractionsarereferredtoas‘crosstalk’betweenasenergysourceandasstructuralcomponents.Sugarpro-signallingpathwaysoraredefinedassig

3、nallingnetworksductionanduseareinpartcontrolledatthelevelofgene(Gibson2000;Brocard-Gifford,Lynch&Finkelstein2003).expressionbythesugarsthemselves.ResponsestosugarAsubstantialpartoftheoutputofthesesignallingnet-arecloselyintegratedwithresponsepathwaysthatindicateworksarechangesingeneexpression

4、whichcanincreas-environmentalconditionssuchaslightandwateravailabil-inglybeunderstoodintermsofthevarioussignallingity.Highsugarlevelsinhibitseedlingdevelopment,represspathwayscomingtogetheratthepromotersofindividualphotosyntheticgeneexpressionandinducegenesofstoragegenes.Thisreviewdescribesin

5、teractionsbetweenthesemetabolismsuchasthoseofstarchbiosynthesis.Geneticthreesignallingpathwaysandhowtheycontrolgeneapproacheshavedemonstratedtheimportanceofabscisicexpressionatamolecularlevel.Itsmainfocusisontheacid(ABA)andthetranscriptionalregulatorABA-interactionbetweentheresponsepathwaysme

6、diatedbyinsensitive4(ABI4)insugarresponsepathways.RecentsugarandtheplanthormoneABA.Sugarsensingandsig-analysisofbothphotosyntheticandstarchbiosyntheticnallingismoregenerallydiscussedinseveralexcellentgenepromoterssuggestadirectroleforABI4intheirreviews(Smeekens2000;Rolland,Moore&Sheen2002;con

7、trol.Theincreasedunderstandingoftheregulatorypro-Rook&Bevan2003).moterelementscontrollinggeneexpression,inresponsetosugarandABA,allowstranscriptionalnetworkstobeunderstoodatamolecularlevel.LIGHT,SUGARANDABAThecontrolofphotosyntheticgeneexpres