Genetics of the plant Flashcards
Define Species.
Groups of individuals that inbreed in nature.
What is a cultivar?
A plant bread for a particular trait.
What is pathogenicity?
Capability of a pathogen to cause disease.
What are the two classes of signal recognition?
PAMP (Pathogen Associated molecular patterns)m
ETI (Effecters-Triggered Immunity)
What is a plant hypersensitive reaction?
It takes place where the pathogen penetrates. The plant ends up killing a part of itself so kill the pathogen within. If this occurs, you see necrotic legions within 24 to 48 hours.
What is virulence?
The virulence gene has to be identified by a resistant gene for the disease to not occur.
What is an elicitor?
Proteins that will cause the disease.
What are the three types of genetic resistance?
- Quantitative resistance
- Qualitative resistance
- Gene-for-gene
Name three reactions that Qualitative Resistance would elicit?
- Apparent immunity (no infection)
- Hypersensitive response (no colonization)
- Inhibition of pathogen reproduction.
What type of resistance is also called horizontal resistance?
Quantitative resistance.
What is disease a result of?
COMPATIBLE genetic interaction between host and pathogen and for this reaction the pathogen is said to be VIRULENT and the host is SUSCEPTIBLE.
What is the failure to cause a disease a result of?
An INCOMPATIBLE genetic interaction between host and pathogen. The pathogen is AVIRULENT and the host id RESISTANT.
What kind of a characteristic is susceptibility or resistance?
Inherited
How many genes control resistance?
Single genes
