期刊
NEW PHYTOLOGIST
卷 236, 期 1, 页码 24-42出版社
WILEY
DOI: 10.1111/nph.18359
关键词
NLR immune receptor; nuclear envelope; nuclear pore complex; nuclear transport receptor; nucleocytoplasmic NLR signalling; plant immunity
资金
- Deutsche Forschungsgemeinschaft (DFG) [IRTG 2172, WI 3208/8-1]
- Gatsby Charitable Foundation
- DFG Walter Benjamin Programme [464864389]
- Projekt DEAL
This article discusses the role of nucleoporins and nuclear transport receptors (NTRs) in plant immunity, with a focus on NLR immune signaling across the nuclear compartment boundary and within the nucleus. The authors also highlight the cytoplasmic and nuclear functions of NLRs and their signaling partners, as well as the potential implications of NLR activation and resistosome formation in both cellular compartments for mediating plant pathogen resistance and programmed host cell death.
Plant intracellular nucleotide-binding leucine-rich repeat immune receptors (NLRs) perceive the activity of pathogen-secreted effector molecules that, when undetected, promote colonisation of hosts. Signalling from activated NLRs converges with and potentiates downstream responses from activated pattern recognition receptors (PRRs) that sense microbial signatures at the cell surface. Efficient signalling of both receptor branches relies on the host cell nucleus as an integration point for transcriptional reprogramming, and on the macromolecular transport processes that mediate the communication between cytoplasm and nucleoplasm. Studies on nuclear pore complexes (NPCs), the nucleoporin proteins (NUPs) that compose NPCs, and nuclear transport machinery constituents that control nucleocytoplasmic transport, have revealed that they play important roles in regulating plant immune responses. Here, we discuss the contributions of nucleoporins and nuclear transport receptor (NTR)-mediated signal transduction in plant immunity with an emphasis on NLR immune signalling across the nuclear compartment boundary and within the nucleus. We also highlight and discuss cytoplasmic and nuclear functions of NLRs and their signalling partners and further consider the potential implications of NLR activation and resistosome formation in both cellular compartments for mediating plant pathogen resistance and programmed host cell death.
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