每日摘要苜蓿SPX13介导根组织丛枝菌根

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MedicagoSPX1andSPX3regulatephosphatehomeostasis,mycorrhizalcolonization,andarbusculedegradation

第一作者

PengWang

第一单位

瓦赫宁根大学

通讯作者

ErikLimpens

Abstract

背景回顾：Toacquiresufficientmineralnutrientssuchasphosphate(Pi)fromthesoil,mostplantsengageinsymbiosiswitharbuscularmycorrhizal(AM)fungi.Attractedbyplant-secretedstrigolactones,thefungicolonizetherootsandformhighly-branchedhyphalstructurescalledarbusculesinsideinnercortexcells.Thehostplantmustcontrolthedifferentstepsofthisinteractiontomaintainitssymbioticnature.

提出问题：However,howplantssensetheamountofPiobtainedfromthefungus,andhowthisdeterminesthearbusculelifespan,arefarfromunderstood.

主要发现：Here,weshowthatMedicagotruncatulaSPX-domaincontainingproteinsSPX1andSPX3regulaterootPistarvationresponses,inpartbyinteractingwithPHOSPHATERESPONSEREGULATOR2,aswellasfungalcolonizationandarbusculedegradation.

结果1-表达模式：SPX1andSPX3areinduceduponPistarvationbutbe

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