野鸦椿与圆齿野鸦椿盐胁迫的代谢响应

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中图分类号：S718.43 文献标志码：A 文章编号：1673-923X（2025）10-0205-13

【结论】2个树种在盐胁迫下表现出不同的代谢响应策略，苯丙烷和类黄酮生物合成途径与野鸦椿和圆齿野鸦椿幼苗响应盐胁迫的机制密切相关。

Metabolic response to salt stress in Euscaphis japonica and Euscaphis konishii

SUXiaona，WUHuiping，LIUWenhao，TUShuping，CAIJunhuo，GUOChunlan，JIANGXueru （CollegeofForestryLandscapeandArt，JiangxiAgriculturalUniversityNanchang3o45，JiangxiCia）

Abstract：【Objective】Toinvestigatethedierences intheresponseofEuscaphisjaponicaandEuscaphiskonishiisdlingsto saltstress，providingatheoreticalbasisforthedevelopmentandutilzationofplantsinthegeusEuscaphs.【Method】Thegrowth diferencesbetweenseedlingsofthetwotrspecieswerecomparedunderdiferentconcentrationsofneutralsalt （NaClandalkaline salt （NaHCO3）.Keymetabolitesand metabolicpathwaysrelatedtosalttressresponsewereidentifiedusingliquidchromatogaphymasspectrometry（LC-）techolgy【Result】Saltstrsnificantlybitedtheselingheightgounddametercrtd biomassofbothtreespecies.TheseidicatorsgraduallyecreasedasthesaltoncentrationinreasedTenegativeefectsofNaHO stressontheseedlingsofbothspeciesweresignifcantlygreater thanthoseofNaClstressMetabolomicanalysisrevealedthatsalt stressignfcantlyalteredthemetabolismofEuscaphisjaponicaandEusaphisonishiiseedlings.UnderNaHCOtreatmentttotal numberofdiferentiallaccumulatedmetabolites（DAMs）andthenumberofdownregulatedDAMsinEuscaphisjaponcaseedlings werehigherthanthoseunderothertreatments.Incontrast，thetotalnumberofDAMsinEuscaphiskonishiiseedlingsunderNaCl treatmentwaslowerthantatinEuscaphisjaponica，buthenumberofupregulatedDAMswashigher.TheDAMsinbothspeciesunder saltstresswreprmarilyomposedofpenylpropanoids，polyketidesrganicacidsandderivatives，ipidsndlipid-likeolecules， organicoxygencompounds，ndrganiceterocylicompounds.TheseDAMsweresignificantlyenchedintreemetabolicathways： phenylpropaoidiossis，vodioysisdbfavinmetablsSpecicallytediferecesineclaiof metabolitesrelatedtoepenlpropanidosythesisandfavonidbosytesispathwayseflectedtevarbiltiothetree speciesrespondedtodiferentypesofsaltstress【Conclusion】Thetwospeiesexhbiteddiffrentmetabolicesponsestrategiesder salt stresswithtepeylpropodandfavooidiosytsispathwayscloselyassciatedwithtemehassbyhchEuscapis japonicaand Euscaphiskonishii seedlingsrespond to salt stress.

Keywords：salt stress;seedlinggrowth; metabolomics;Euscaphis japonica;Euscaphis konishii

土壤盐碱化问题是一个全球性挑战，对农业生产和生态环境造成了严重的影响。（剩余18068字）