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3个基因共同参与拟南芥对橡胶树白粉菌的抗病性
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作者 李亮 梅双双 戎伟 《热带生物学报》 2018年第1期31-36,共6页
通过在拟南芥野生型Col-0和突变体sag101,eds1及pad4上接种橡胶树白粉菌Oidium heveae HN1106,分析了拟南芥早期抗病性和后期抗病性表型。结果表明:与野生型Col-0相比,橡胶树白粉菌在拟南芥突变体sag101,eds1和pad4上激发的早期抗病性... 通过在拟南芥野生型Col-0和突变体sag101,eds1及pad4上接种橡胶树白粉菌Oidium heveae HN1106,分析了拟南芥早期抗病性和后期抗病性表型。结果表明:与野生型Col-0相比,橡胶树白粉菌在拟南芥突变体sag101,eds1和pad4上激发的早期抗病性、后期抗病性以及抗病反应都显著降低,突变体eds1感病性最强,pad4次之,sag101最弱,暗示着PAD4与SAG101在橡胶树白粉菌抗性方面存在功能互补,三者共同参与了拟南芥对橡胶树白粉菌的抗病性。 展开更多
关键词 橡胶树白粉菌 拟南芥 EDS1 PAD4 sag101 抗病性
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EDS1 modules as two‑tiered receptor complexes for TIR‑catalyzed signaling molecules to activate plant immunity
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作者 Jia Li Xiaorong Tao 《Stress Biology》 2022年第1期324-327,共4页
Plant intracellular nucleotide-binding leucine-rich repeat(NLR)receptors with an N-terminal Toll/Interleukin-1 recep-tor(TIR)domain detect pathogen effectors to produce TIR-catalyzed signaling molecules for activation... Plant intracellular nucleotide-binding leucine-rich repeat(NLR)receptors with an N-terminal Toll/Interleukin-1 recep-tor(TIR)domain detect pathogen effectors to produce TIR-catalyzed signaling molecules for activation of plant immunity.Plant immune signaling by TIR-containing NLR(TNL)proteins converges on Enhanced Disease Suscepti-bility 1(EDS1)and its direct partners Phytoalexin Deficient 4(PAD4)or Senescence-Associated Gene 101(SAG101).TNL signaling also require helper NLRs N requirement gene 1(NRG1)and activated disease resistance 1(ADR1).In two recent remarkable papers published in Science,the authors show that the TIR-containing proteins catalyze and produce two types of signaling molecules,ADPr-ATP/diADPR and pRib-AMP/ADP.Importantly,they demonstrate that EDS1-SAG101 and EDS1-PAD4 modules are the receptor complexes for ADPr-ATP/diADPRp and Rib-AMP/ADP,respec-tively,which allosterically promote EDS1-SAG101 interaction with NRG1 and EDS1-PAD4 interaction with ADR1.Thus,two different small molecules catalyzed by TIR-containing proteins selectively activate the downstream two distinct branches of EDS1-mediated immune signalings.These breakthrough studies significantly advance our understanding of TNL downstream signaling pathway. 展开更多
关键词 NLR receptor Toll/Interleukin-1 receptor domain EDS1 PAD4 sag101 Signaling molecule Plant immunity
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