Dynamic changes of the Prf/Pto tomato resistance complex following effector recognition.

Dynamic changes of the Prf/Pto tomato resistance complex following effector recognition.
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DOI:
10.1038/s41467-023-38103-6
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发表时间:
2023-05-04
影响因子:
16.6
通讯作者:
Ntoukakis, Vardis
Ntoukakis, Vardis
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Sheikh, Arsheed H.;Zacharia, Iosif;Pardal, Alonso J.;Dominguez-Ferreras, Ana;Sueldo, Daniela J.;Kim, Jung-Gun;Balmuth, Alexi;Gutierrez, Jose R.;Conlan, Brendon F.;Ullah, Najeeb;Nippe, Olivia M.;Girija, Anil M.;Wu, Chih-Hang;Sessa, Guido;Jones, Alexandra M. E.;Grant, Murray R.;Gifford, Miriam L.;Mudgett, Mary Beth;Rathjen, John P.;Ntoukakis, Vardis

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在植物和动物中,与核苷酸结合的富含亮氨酸重复序列(NLR)免疫受体在病原体识别和先天免疫激活中起着关键作用。在植物中,NLR识别病原体衍生的效应蛋白并启动效应触发免疫(ETI)。然而,连接NLR介导的效应子识别和下游信号传导的分子机制尚未完全理解。通过利用番茄Prf/Pto NLR抗性复合物,我们鉴定了14-3-3蛋白TFT 1和TFT 3作为NLR复合物和蛋白激酶MAPKKKα的相互作用伴侣。此外,我们确定了辅助NRC蛋白(细胞死亡所需的NLR)的Prf /Pto NLR识别复合物的组成部分。值得注意的是,我们的研究表明,TFT和NRC与NLR复合物的不同模块相互作用,并在效应物识别后解离,促进下游信号传导。因此,我们的数据提供了免疫受体激活和下游信号级联启动之间的机制联系。植物和动物都利用抗性蛋白来识别病原体。在这项工作中,作者说明了番茄抗性蛋白如何传达细菌的感知,以保护植物免受病原体的侵害。
In both plants and animals, nucleotide-binding leucine-rich repeat (NLR) immune receptors play critical roles in pathogen recognition and activation of innate immunity. In plants, NLRs recognise pathogen-derived effector proteins and initiate effector-triggered immunity (ETI). However, the molecular mechanisms that link NLR-mediated effector recognition and downstream signalling are not fully understood. By exploiting the well-characterised tomato Prf/Pto NLR resistance complex, we identified the 14-3-3 proteins TFT1 and TFT3 as interacting partners of both the NLR complex and the protein kinase MAPKKKα. Moreover, we identified the helper NRC proteins (NLR-required for cell death) as integral components of the Prf /Pto NLR recognition complex. Notably our studies revealed that TFTs and NRCs interact with distinct modules of the NLR complex and, following effector recognition, dissociate facilitating downstream signalling. Thus, our data provide a mechanistic link between activation of immune receptors and initiation of downstream signalling cascades. Both plant and animals utilize resistant proteins to recognise pathogens. In this work the authors illustrate how bacterial perception by a tomato resistant protein is communicated in order to protect plants against pathogens.
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影响因子: --
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