Journal
JOURNAL OF INTEGRATIVE PLANT BIOLOGY
Volume 58, Issue 4, Pages 284-298Publisher
WILEY
DOI: 10.1111/jipb.12426
Keywords
Endocytic trafficking; nucleocytoplasmic partitioning; programmed cell death; small GTPase; SNARE; vesicle transport
Categories
Funding
- National Science Foundation [IOS-1146589]
- National Natural Science Foundation of China [31371931, 31430072]
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1146589] Funding Source: National Science Foundation
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Plants have evolved a sophisticated immune system to fight against pathogenic microbes. Upon detection of pathogen invasion by immune receptors, the immune system is turned on, resulting in production of antimicrobial molecules including pathogenesis-related (PR) proteins. Conceivably, an efficient immune response depends on the capacity of the plant cell's protein/membrane trafficking network to deploy the right defense-associated molecules in the right place at the right time. Recent research in this area shows that while the abundance of cell surface immune receptors is regulated by endocytosis, many intracellular immune receptors, when activated, are partitioned between the cytoplasm and the nucleus for induction of defense genes and activation of programmed cell death, respectively. Vesicle transport is an essential process for secretion of PR proteins to the apoplastic space and targeting of defense-related proteins to the plasma membrane or other endomembrane compartments. In this review, we discuss the various aspects of protein trafficking during plant immunity, with a focus on the immunity proteins on the move and the major components of the trafficking machineries engaged.
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