Diversity, Function and Regulation of Cell Surface and Intracellular Immune Receptors in Solanaceae

• Published in: Plants (Basel) Vol. 9; no. 4; p. 434
• Main Authors: Kim, Jong Hum, Castroverde, Christian Danve M
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.04.2020; MDPI
• Subjects: Cell surface; Epigenetics; Epitopes; Gene expression; Genomes; Host plants; immune receptor; Immune system; Intracellular; Kinases; Leucine; Ligands; NB-LRR receptor; Nucleotides; Pathogens; pattern recognition receptor; Phosphorylation; plant immunity; Proteins; Receptor mechanisms; Receptors; Regulatory mechanisms (biology); resistance protein; Review; Signal transduction; Solanaceae; solanaceous plants; Species diversity; State-of-the-art reviews; Structure-function relationships; Surveillance; Virulence; host–pathogen interaction; solanaceous plants; immune receptor; resistance protein; NB-LRR receptor; pattern recognition receptor; plant immunity
• ISSN: 2223-7747; 2223-7747
• DOI: 10.3390/plants9040434

The first layer of the plant immune system comprises plasma membrane-localized receptor proteins and intracellular receptors of the nucleotide-binding leucine-rich repeat protein superfamily. Together, these immune receptors act as a network of surveillance machines in recognizing extracellular and intracellular pathogen invasion-derived molecules, ranging from conserved structural epitopes to virulence-promoting effectors. Successful pathogen recognition leads to physiological and molecular changes in the host plants, which are critical for counteracting and defending against biotic attack. A breadth of significant insights and conceptual advances have been derived from decades of research in various model plant species regarding the structural complexity, functional diversity, and regulatory mechanisms of these plant immune receptors. In this article, we review the current state-of-the-art of how these host surveillance proteins function and how they are regulated. We will focus on the latest progress made in plant species belonging to the family, because of their tremendous importance as model organisms and agriculturally valuable crops.