Ability of Ectomycorrhizal FUngus Laccaria biclor S238N to Increase the Growth of Douglas FIr Seedlings and Their Phosphorus and Potassium Uptake-中国Betway体育网页登陆

摘要 EctomycorrhizalfungusLaccariabicolorS238N,isolatedfromaforestsoilincentralFrancein1990s,hasdemonstratedunequivocallyandabilitytopromotepinegrowth.Inthepresentnurserybedexperiment,theabilityofthisectomycorrhizalfungustoincreasegrowthandPandKuptakeofDouglasFirseedlings(Zone22)wasexamined.Growthofinoculatedseedlingswasovertwice(plantheight)andthreetimes(biomass)thatofnon-inoculatedones.Similarly,boththeconcentrationsandtheamountsofPandKuptakebyseedlingsweresignificantlyincreasedbyfungalinoculation,indicatingtheimprovementofPandKnutritioninmycorrhizalseedlings.Incontrast,Al-Pinthesoilswasdecreasedobviouslybyplants,especiallybymycorrhizas,suggestingutilizationofthissoilPpoolbyplantsandmoreefficientAl-Pmobilizationbymycorrhizasthanbynomycorrhizas.Moreover,Kextractedby1mol/LHClfollowingconsecutiveextractionofH2OandCH3COONH4,whichmaynotbeplantavailable,couldbeutilizedbyfunguscoloniedroots.ThiscouldbeexplainedbythereleaseofprotonsandoxalatebyhypaewhichleadstoreplacementofinterlayerKinnonexpanded2:1claymineralsandbio-weatheringofphyllosilicates.

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Ability of Ectomycorrhizal FUngus Laccaria biclor S238N to Increase the Growth of Douglas FIr Seedlings and Their Phosphorus and Potassium Uptake

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