Stop helping pathogens: engineering plant susceptibility genes for durable resistance

Area of Science:

• Plant Pathology
• Agricultural Science
• Genetics

Background:

• Current crop protection relies heavily on single dominant resistance genes, which are vulnerable to pathogen evolution.
• This genetic vulnerability threatens global food security and sustainable agricultural practices.
• An alternative strategy involves targeting plant susceptibility (S) genes.

Purpose of the Study:

• To explore the potential of targeting plant susceptibility (S) genes for durable disease resistance in crops.
• To investigate genome editing as a precise tool for modifying S gene function.
• To address the challenge of pleiotropic effects associated with S gene inactivation.

Main Methods:

• Review of existing literature on plant-pathogen interactions and genetic resistance.
• Analysis of the role of susceptibility (S) genes in disease establishment.
• Discussion of the application of genome editing technologies for crop improvement.

Main Results:

• Perturbation of S genes can confer recessive resistance, which is theoretically more durable than dominant resistance.
• Inactivating S genes offers a novel avenue for breeding resistant crop varieties.
• Genome editing provides precise control over S gene function, potentially minimizing negative trade-offs.

Conclusions:

• Targeting plant susceptibility genes represents a promising strategy for developing sustainable and durable crop disease resistance.
• Genome editing technologies are key enablers for precisely manipulating S genes to enhance crop resilience.
• Further research is needed to fully understand and mitigate potential pleiotropic effects of S gene modification.