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| Web URL(s): | http://usgatero.msu.edu/v08/n07.pdf
Last checked: 04/07/2009
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Fei, Shui-zhang;
Zhang, Chunzhen |
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| Author Affiliation: | Fei: Assistant Professor; Zhang: Graduate Student, Department of Horticulture, Iowa State University, Ames, Iowa |
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| Title: | Identification of genes associated with cold hardiness in perennial ryegrass |
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| Source: | USGA Turfgrass and Environmental Research Online. Vol. 8, No. 7, April 1 2009, p. [1-6]. |
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| Publishing Information: | Far Hills, NJ: United States Golf Association, Green Section |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Cold resistance; Lolium perenne; Gene mapping; Temperatures; Lolium multiflorum; Gene expression; Breeding improvement; Ions; Genes; Winter injury
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| Abstract/Contents: | "Cold hardening dramatically increases freezing tolerance in many temperate plant species. An understanding of the mechanism that regulates cold hardening is important for cultivar development of perennial ryegrass which lacks adequate freezing tolerance. This research investigated varied responses of annual and perennial ryegrass to low temperature and the duration of cold hardening on freezing tolerance in perennial ryegrass. A systems biology approach was taken to identify genetic elements (genes) that are responsive to cold hardening. From this research we have found that: A 14-day cold hardening at 4° C is sufficient to induce maximum freezing tolerance in mature perennial ryegrass plants. Further exposure to low temperatures above zero does not increase freezing tolerance. While perennial ryegrass has the capacity of cold hardening, annual ryegrass does not have such capacity. Survey of gene expression by using expressed sequence tags (ESTs) or microarray revealed that many genes are highly responsive during cold hardening; their expressions are either highly increased or significantly suppressed, suggesting their potential roles in cold hardening. Two ice recrystallization inhibition protein genes, also referred to as antifreeze protein genes, were isolated from perennial ryegrass. Transfer of these two genes into the model plant species of Arabidopsis improved survival of the transgenic plants carrying the genes following a freeze treatment, suggesting that these genes play important roles in freezing tolerance in perennial ryegrass." |
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| Language: | English |
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| References: | 11 |
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| See Also: | Other Reports from this USGA research project: 2006-10-318 |
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| Note: | Summary as abstract
Pictures, color
Tables
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fei, S.-z, and C. Zhang. 2009. Identification of genes associated with cold hardiness in perennial ryegrass. USGA Turfgrass Environ. Res. Online. 8(7):p. [1-6]. |
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| Web URL(s):
http://usgatero.msu.edu/v08/n07.pdf
Last checked: 04/07/2009
Requires: PDF Reader |
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MSU catalog number: b3952822a |
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