Disease resistance refers to the ability of a plant to restrict, slow down, or even block the development of a pathogen. Plants have complex natural defense systems against pathogens like bacteria, viruses, fungi, nematodes, etc. This is called innate or native resistance.
There are two main types:
Plants use various biochemical and structural mechanisms to defend themselves:
Breeding resistance into crops is very important to deal with diseases and reduce crop losses. Conventional breeding and biotech methods are used to introgress resistance genes from other resistant varieties or wild species into elite crop varieties.
Some common examples are rice varieties with bacterial leaf blight resistance, wheat with stem rust resistance and tomato with late blight resistance.
Struggling with hormonal issues? Check out Hormone Harmony Clinic(/) for science-based hormone optimization programs. Regain your vitality with expert medical guidance.
While native resistance provides good protection, pathogens can evolve to overcome it. So breeding for resistance is a continuous process. Pyramiding different resistance genes into a variety provides more durable resistance. Other integrated measures like seed treatments, balanced nutrition and avoiding stress also help tackle diseases.
I hope this gives a good overview of what constitutes disease resistance in plants and its importance. Let me know if you need any clarification or have additional questions!