Summary
This narrative review synthesises current knowledge on genetic resistance to root rot diseases, which represent a major global constraint on crop productivity and typically involve multiple pathogens (fungi, oomycetes, bacteria and viruses). The authors examine quantitative trait loci and genes identified through genome-wide studies, focusing on the molecular mechanisms by which crops either mount successful defence or succumb to pathogen invasion. The review highlights that individual pathogens engage distinct molecular pathways, underlining the complexity of breeding for durable, multi-pathogen resistance.
Regional applicability
The findings are globally applicable, as root rot diseases are a worldwide agricultural challenge affecting multiple cropping systems. United Kingdom growers and plant breeders can utilise the reviewed genetic markers and resistance mechanisms to inform crop improvement programmes, though specific QTL and genes identified may vary in their effectiveness across different soil types, climates and pathogen populations present in UK conditions.
Key measures
Quantitative trait loci (QTL) associated with root rot resistance; gene identity within reported loci; molecular mechanisms of host–pathogen interaction; protein responses to fungal, oomycete, bacterial and viral pathogens
Outcomes reported
The review synthesises genes and molecular mechanisms underlying resistance or susceptibility to root rot diseases across major agricultural crops. It examines quantitative trait loci associated with resistance and the pathogen-specific protein interactions involved in disease establishment or containment.
Topic tags
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