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DOI: | 10.2135/cropsci2017.04.0224 |
Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/0/0/cropsci2017.04.0224 Last checked: 08/16/2017 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/cs/pdfs/57/5/2843 Last checked: 08/16/2017 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Zhang, Jing;
Kenworthy, Kevin;
Unruh, J. Bryan;
Erickson, John;
MacDonald, Gregory |
Author Affiliation: | Zhang, Kenworthy, Erickson, and MacDonald: Dep. of Agronomy, Univ. of Florida, Gainesville, FL; Unruh: Dep. of Environmental Horticulture, West Florida Research Education Center, Univ. of Florida, Jay, FL |
Title: | Changes of leaf membrane fatty acid composition and saturation level of warm-season turfgrass during drought stress |
Section: | Turfgrass science Other records with the "Turfgrass science" Section
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Source: | Crop Science. Vol. 57, No. 5, September/October 2017, p. 2843-2851. |
Publishing Information: | Madison, Wisconsin: Crop Science Society of America |
# of Pages: | 9 |
Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/0/0/cropsci2017.04.0224 Last checked: 08/16/2017 Notes: Abstract only |
Keywords: | TIC Keywords: Comparisons; Cultivar evaluation; Drought resistance; Drought stress; Fatty acids; Leaf anatomy; Physiological responses; Stenotaphrum secundatum; Turfgrass quality; Variations; Warm season turfgrasses; Zoysia
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Abstract/Contents: | "Although it is known that drought tolerance can be associated with membrane fatty acid (FA) unsaturation, a relevant study is lacking in zoysiagrass (Zoysia spp.) and St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze.]. Our objectives were (i) to substantiate that variation exists among species and genotypes for leaf tissue FA composition under well-watered conditions; (ii) to evaluate the relationship between well-watered leaf FA composition and turf performance under drought stress; and (iii) to determine if modifications in FA content occur during drought stress and if the changes associate with improved drought tolerance. Nine genotypes of three species were subjected to both controlled dry down and well-watered conditions for 12 d in a greenhouse. Plants were evaluated for cumulative water use, transpiration response, turfgrass quality, and leaf FA composition (palmitic acid, stearic acid, palmitoleic acid, hexadecadienoic acid, oleic acid, linoleic acid, and linolenic acid). St. Augustinegrass had a constitutively higher unsaturation FA fraction than two zoysiagrass species, owing to its higher linolenic acid and low palmitic acid fractions. During dry down, relative FA contents remained stable and no early unsaturation alteration was found. Two genotypes, 'UF182' Japanese lawngrass (Z. japonica Steud.) and 'Zeon' manilagrass [Z. matrella (L.) Merr.], displayed an increase in unsaturated FAs when severe drought stress occurred (rapid decline in turfgrass quality), which was associated with good turfgrass quality and apparent drought tolerance. The result in zoysiagrass supports previous reports suggesting increased levels of linolenic acid under drought stress to be a defensive mechanism." |
Language: | English |
References: | 30 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Zhang, J., K. Kenworthy, J. B. Unruh, J. Erickson, and G. MacDonald. 2017. Changes of leaf membrane fatty acid composition and saturation level of warm-season turfgrass during drought stress. Crop Sci. 57(5):p. 2843-2851. |
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| DOI: 10.2135/cropsci2017.04.0224 |
| Web URL(s): https://dl.sciencesocieties.org/publications/cs/articles/0/0/cropsci2017.04.0224 Last checked: 08/16/2017 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/cs/pdfs/57/5/2843 Last checked: 08/16/2017 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2211522a |
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