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| DOI: | 10.21273/JASHS.134.5.511 |
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| Web URL(s): | https://journals.ashs.org/jashs/view/journals/jashs/134/5/article-p511.xml
Last checked: 12/06/2019
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Su, Kemin;
Bremer, Dale J.;
Jeannotte, Richard;
Welti, Ruth;
Yang, Celeste |
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| Author Affiliation: | Su: Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK; Bremer: Department of Horticulture, Forestry and Recreation Resources; Jeannotte and Welti: Kansas Lipidomics Research Center, Division of Biology, Kansas State University, Manhattan, KS; Yang: Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL |
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| Title: | Membrane lipid composition and heat tolerance in cool-season turfgrasses, including a hybrid bluegrass |
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| Section: | Environmental stress physiology
Other records with the "Environmental stress physiology" Section
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| Source: | Journal of The American Society for Horticultural Science. Vol. 134, No. 5, September 2009, p. 511-520. |
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| Publishing Information: | Alexandria, Va.: American Society for Horticultural Science |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Cool season turfgrasses; Cultivar evaluation; Cultivar variation; Festuca arundinacea; Heat resistance; Heat stress; Lipids; Phospholipid fatty acid; Poa pratensis; Poa pratensis X Poa arachnifera
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| Cultivar Names: | Dynasty; Apollo; Thermal Blue |
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| Abstract/Contents: | "Cool-season turfgrasses may experience heat stress during summer. Hybrid bluegrasses (HBGs), crosses between kentucky bluegrass [KBG (Poa pratensis L.)] and native texas bluegrass (Poa arachnifera Torr.), have improved heat tolerance but the mechanisms of heat tolerance are poorly understood. Our objectives were to quantitatively profile membrane lipid molecular species in three cool-season turfgrasses exposed to optimal (22/15 °C, 14/10 h light/dark) and supra-optimal temperatures (35/25°C and 40/30 °C, 14/10 h light/dark). Grasses included a low heat-tolerant tall fescue [TF (Festuca arundinacea Schreb. Dynasty)], a mid-heattolerant KBG (Apollo), and a heat-tolerant HBG (Thermal Blue). At high temperature, glycolipid digalactosyldiacylglycerol (DGDG) in HBG was 12% and 16% greater than in KBG and TF, respectively, and the ratio DGDG to monogalactosyldiacylglycerol was 19% and 44% greater in HBG than in KBG and TF, respectively. Greater heat tolerance in HBG and KBG was associated with higher contents of phosphatidylethanolamine and phosphatidylglycerol, and with reduced overall unsaturation compared with TF. Overall, 20 lipid molecular species were present in greater amounts and another 20 species in lesser amounts in HBG and KBG than in TF. Results suggest 40 membrane lipid molecules are potential biomarkers for heat tolerance and that compositional changes in membrane lipids in response to heat contribute to differences in heat tolerance among cool-season grasses." |
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| Language: | English |
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| References: | 43 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Su, K., D. J. Bremer, R. Jeannotte, R. Welti, and C. Yang. 2009. Membrane lipid composition and heat tolerance in cool-season turfgrasses, including a hybrid bluegrass. J. Am. Soc. Hortic. Sci. 134(5):p. 511-520. |
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| DOI: 10.21273/JASHS.134.5.511 |
| Web URL(s):
https://journals.ashs.org/jashs/view/journals/jashs/134/5/article-p511.xml
Last checked: 12/06/2019
Requires: PDF Reader |
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MSU catalog number: b2221587a |
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