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| Web URL(s): | http://usgatero.msu.edu/v09/n05.pdf
Last checked: 03/12/2010
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Paterson, Andrew H.;
Kim, Changsoo |
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| Author Affiliation: | Paterson: Distinguished Research Professor and Director; Kim: Post-Doctoral Scientist, Plant Genome Mapping Laboratory, University of Georgia, Athens, GA |
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| Title: | Drought-responsive gene expression in bermudagrass |
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| Source: | USGA Turfgrass and Environmental Research Online. Vol. 9, No. 5, March 1 2010, p. [1-5]. |
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| Publishing Information: | Far Hills, NJ: United States Golf Association, Green Section |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Cultivar evaluation; Cultivar improvement; Cynodon dactylon; Drought resistance; Gene expression; Genetic engineering
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| Abstract/Contents: | "Research at the University of Georgia has begun to reveal the repertoire and organization of genes that respond to drought stress in bermudagrass and their relationships to those of well-studied models such as rice. In particular: A total of 120 up- and 69 down-regulated genes from two different drought-mimicking treatments (10% and 20% polyethylene glycol) and three different time points (3, 6, and 9 days after treatment) were identified. The 189 drought candidate genes grouped into seven different clusters according to degree of similarity in gene expression patterns. The three clusters of down-regulated genes included genes functioning in photosynthesis, glycolysis, sexual reproduction, and organic and electron transport activities. The four up-regulated clusters include some drought responsive genes implicated in two-component sensor molecule activity and epigenetic regulation of gene expression, response to external stimulus and abscisic acid stimulus, responses to pests, pathogens, or parasites, transposase activity, and tetrapyrrole binding. The seven clusters of genes showing distinctive drought-responsive expression patterns mingle a few drought candidate genes with many additional genes, suggesting a diverse spectrum of responses to drought stress in this species. Engineering and reintroduction into the plant of modified copies of these genes might alter phenotype, perhaps in some cases conferring improved drought tolerance. The 'promoters' (on-off switches) of these genes might be useful to introduce other genes into the plant, and confer expression at just the right time to protect the plant from drought. As DNA sequences for additional bermudagrass genotypes accumulate, it may be possible to associate specific nucleotide changes with differences in drought response to better take advantage of naturally occurring variation in the development of new bermudagrass genotypes with improved drought tolerance." |
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| Language: | English |
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| References: | 8 |
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| See Also: | Other items relating to: Breeding for Drought |
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| See Also: | Other Reports from this USGA research project: 2006-17-325 |
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| Note: | Summary as abstract
Figures |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Paterson, A. H., and C. Kim. 2010. Drought-responsive gene expression in bermudagrass. USGA Turfgrass Environ. Res. Online. 9(5):p. [1-5]. |
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| Web URL(s):
http://usgatero.msu.edu/v09/n05.pdf
Last checked: 03/12/2010
Requires: PDF Reader |
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MSU catalog number: b3952822a |
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