virus-plant-interaction
Virus-plant interaction is the study of how plant viruses infect, replicate within, and spread through host plant tissues, as well as how plants mount immune and physiological responses to viral invasion. Understanding these interactions is critical for plant science because viral infections are among the leading causes of crop yield loss and quality degradation worldwide. Research in this field informs the development of virus-resistant cultivars, targeted breeding strategies, and disease management practices that safeguard agricultural productivity.
open_in_new WikipediaPubMed · 2026-05-05
Scientists used gene-editing to knock out a gene in maize (corn) that a deadly viral disease exploits, creating plants that resist maize lethal necrosis — a crop-destroying illness devastating farms across sub-Saharan Africa.
A major resistance gene was mapped to chromosome 6 of maize and encodes a peroxisomal peptidase (protease enzyme) that viruses exploit during infection.
Targeted knockout of this host gene using gene-editing conferred field-level resistance to maize lethal necrosis, demonstrating effectiveness under real agricultural conditions.
The resistance mechanism involves disrupting the virus's ability to use a host plant protein, representing a novel 'loss-of-susceptibility' strategy rather than a traditional resistance gene approach.
