Difference between revisions of "Disease resistance to fungal diseases"
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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). | 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]) |
| − | ([http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3059.2007.01645.x/full Yoshida et al. 2007]) | + | # Alternaria - postharvest rot; most common |
| + | # Anthracnose - serious pre- and postharvest disease | ||
| + | |||
| + | Caused by ''Colletotrichum acutatum'' ([http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3059.2007.01645.x/full Yoshida et al. 2007]) | ||
| + | |||
| + | # Botrytis - normally minor, but can be severe | ||
Revision as of 19:45, 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
- Anthracnose - serious pre- and postharvest disease
Caused by Colletotrichum acutatum (Yoshida et al. 2007)
- Botrytis - normally minor, but can be severe
