Host resistance - Genetics
12 important questions on Host resistance - Genetics
What relationship is described between plant species and resistance genes?
- Each plant species may possess several genes for resistance.
What is the role of R genes in plant-pathosystem interaction?
Which plant-pathosystem does not contain R genes according to the text?
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What have studies on gene-for-gene relationship revealed about effector genes?
How many loci are usually occupied by many loci in a plant?
What is a rare occurrence in terms of pathogen genotypes and alleles for virulence?
What is the focus of the I-2 locus, and where is it located?
- Located on chromosome 11 of tomato.
What does the presence of tandomly arranged multigene families of R genes indicate?
What is speculated about the function of homologous nonfunctional genes found near resistance genes?
What demonstrations come from the DNA sequence analysis of plant resistance genes?
- Evidence of past recombination between alleles in the I-2 and I-2D haplotypes.
What is the function of most alleles for resistance?
- Different alleles work against different pathogen genotypes.
How does the presence of R genes within a race-specific distance affect plant resistance gene studies?
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