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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2010.100.6.S182#page=3
Last checked: 12/1/2010
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Farrell, J. D.;
Frei, U.;
Fei, S.;
Lübberstedt, T. |
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| Author Affiliation: | Farrell, Frei, Fei and Lübberstedt: Iowa State University, Ames, IA |
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| Title: | De-acclimation and re-acclimation responses to sudden temperature shifts in Lolium perenne |
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| Section: | 2009 North Central Division Meeting abstracts
Other records with the "2009 North Central Division Meeting abstracts" Section
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| Source: | Phytopathology. Vol. 100, No. 65, June supplement 2010, p. S184-S185. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Acclimatization; Climatic change; Climatic factors; Cold resistance; Cultivar variation; Gene location; Lolium perenne; Temperature response
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| Abstract/Contents: | "Climate change has resulted in a higher variability in climate patterns; exposing plants to frequent freeze thaw cycles especially during the late winter and early spring. Perennial ryegrass (Lolium perenne) was chosen as model for investigating cold acclimation and freezing tolerance in relation to shifting temperatures. Perennial ryegrass is an important crop in Europe, Asia and Africa as both forage and turf grass. In the United States perennial ryegrass has the potential to become a cover crop in maize fields where stover is removed. Recently, genomic resources have become available including ESTs, microarrays and BAC libraries. Preliminary frost tolerance assays, also known as ion leakage assay have revealed an interesting pattern between two Mediterranean cultivars. One cultivar acclimated quickly however as the cold temperatures continued the frost tolerance decreased compared to the other cultivar, which acclimated slowly and was able to sustain frost tolerance. The objective of this study is to determine the frost tolerance of these two Mediterranean cultivars during cold acclimation, deacclimation and re-acclimation, simulating the typical pattern of a late winter thaw cycle. In parallel mRNAs will be collected from each cultivar during normal, cold acclimation, de-acclimated and re-acclimation conditions for cDNA microarrays assays. Comparing gene expression between the two Mediterranean cultivars during different temperature conditions will help identify molecular mechanisms involved in acclimation, de-acclimation and re-acclimation. The long term goal of this project is to identify the candidate genes involved in these acclimation processes, to find the genomic location of these genes and to extract the full length gene and promoter sequence; in the hopes of expanding our knowledge to other crop species." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Farrell, J. D., U. Frei, S. Fei, and T. Lübberstedt. 2010. De-acclimation and re-acclimation responses to sudden temperature shifts in Lolium perenne. Phytopathology. 100(65):p. S184-S185. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2010.100.6.S182#page=3
Last checked: 12/1/2010
Requires: PDF Reader |
| 
MSU catalog number: b2219736a |
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