Difference between revisions of "Disease resistance to fungal diseases"
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Caused by ''Botrytis cinerea'' | Caused by ''Botrytis cinerea'' | ||
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+ | '''Things to Look Up:''' | ||
abscisic acid? | abscisic acid? | ||
+ | |||
+ | KEGG Pathway - environmental information processing - signal transduction - plant hormone transduction | ||
+ | (look at dormancy) |
Revision as of 19:55, 12 February 2013
Media:Potential_Genes_of_Interest.xlsx
Background on Resistance (R) genes and avirulence (Avr) genes (Hammond-Kosack & Jones 1997)
R genes are found in the plant, while corresponding Avr gene is in the pathogen
Presumed roles of R genes:
- help plants detect pathogenic Avr gene products
- initiate signal transduction pathways that will help defend against the pathogen
- "have the capacity to evolve new R gene specificities rapidly"
If the R gene or corresponding pathogenic Avr gene are not present or altered, then plant is infected with the disease
The R protein recognizes the Avr gene product (ligand), activating a signal transduction cascade that initiates the defense against the pathogen. Thus, the R gene is turned on in healthy plants. R proteins must be able to evolve quickly in order to target new pathogens specifically. The evolution of the Avr genes directly impacts the evolution of the related R gene (coevolution).
3 Common Blueberry Fruit Rots: ([ohioline.osu.edu/hyg-fact/3000/pdf/3213.pdf OSU])
- Alternaria - postharvest rot; most common
Caused by Alternaria tenuissima
- Anthracnose - serious pre- and postharvest disease
Caused by Colletotrichum acutatum (Yoshida et al. 2007)
- Botrytis - normally minor, but can be severe
Caused by Botrytis cinerea
Things to Look Up:
abscisic acid?
KEGG Pathway - environmental information processing - signal transduction - plant hormone transduction
(look at dormancy)