Durability of plant resistance to diploid pathogen

An analysis of the durability of resistance to plant viruses.

ABSTRACT Genetic resistance often fails because a resistance-breaking (RB) pathogen genotype increases in frequency. On the basis of an analysis of cellular plant pathogens, it was recently proposed that the evolutionary potential of a pathogen is a major determinant of the durability of resistance. We test this hypothesis for plant viruses, which differ substantially from cellular pathogens in...

Genetics of plant-pathogen interactions specifying plant disease resistance.

Understanding the mechanistic basis of why a certain pathogen causes disease in one host plant and not in another has long intrigued and motivated plant pathologists. Plants, in nature, are generally resistant to most pathogens. The ability of a pathogen to cause disease in a host plant is usually the exception, not the rule. This is because plants have an innate ability to recognize potential ...

Creating Mutations in Plant Pathogen Resistance Genes

One of the most effective means of studying a vital function like pathogen defense is to create mutations in the genes responsible for the function. By creating such mutant organisms, one can dissect the biochemical pathways leading to pathogen defense. To isolate a mutant plant lacking pathogen resistance genes, one must first disable the resistance genes. Radiation from a cesium 137 source wa...

Molecular Characterization of Carbendazim Resistance of Plant Pathogen (Bipolaris oryzae)

Plant-pathogen interactions: disease resistance in modern agriculture.

The growing human population will require a significant increase in agricultural production. This challenge is made more difficult by the fact that changes in the climatic and environmental conditions under which crops are grown have resulted in the appearance of new diseases, whereas genetic changes within the pathogen have resulted in the loss of previously effective sources of resistance. To...