Receptor-mediated nonhost resistance in plants

Area of Science:

• Plant pathology
• Plant immunity
• Molecular biology

Background:

• Nonhost resistance (NHR) is a plant immune response preventing pathogen infection.
• NHR is durable, offering potential for crop protection against diseases.
• NHR mechanisms share similarities with host plant immune responses.

Purpose of the Study:

• To review current knowledge on plant NHR.
• To focus on cellular-level recognition of non-adapted pathogens by nonhost plants.
• To explore the potential of NHR in crop protection.

Main Methods:

• Review of genetic and molecular evidence.
• Summary of recent findings on NHR mechanisms.
• Theoretical perspective on receptor-mediated NHR.

Main Results:

• NHR is a multilayered defense involving physicochemical barriers and induced responses.
• Recognition of non-adapted pathogens involves pattern-recognition receptors (PRRs) and nucleotide-binding leucine-rich repeat receptors (NLRs).
• The contribution of NHR components can depend on evolutionary distance.

Conclusions:

• Receptor-mediated NHR is durable and has significant potential for innovative crop protection.
• Understanding NHR offers a promising strategy against plant pathogens.