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| Publication Type:
| Report |
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| Author(s): | Howieson, M. J.;
Christians, N. |
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| Title: | Activities of antioxidant enzymes, efficiency of PSII, and lipid peroxidation in mowed creeping bentgrass |
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| Section: | Genetics and plant physiology research
Other records with the "Genetics and plant physiology research" Section
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| Source: | 2006 Iowa Turfgrass Research Report. 2006, p. [1]. |
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| Publishing Information: | Ames, Iowa: Iowa State University Extension |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Antioxidants; Enzyme activity; Agrostis stolonifera; Mowing; Lipids; Rolling; Mechanical stress; Lipid peroxidation
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| Abstract/Contents: | "The objective of this study was to determine if multiple cuttings damage creeping bentgrass (Agrostis stolonifera L) growth and development more than single-cutting or rolling. Formation of reactive oxygen species (ROS) is a common response of plants to wounding. Accumulation of ROS may damage macromolecules, reduce rates of photosynthesis and respiration, and eventually cause cell death. Because of the highly toxic nature of ROS, plants have developed enzymatic systems to scavenge ROS and protect cells from oxidative damage. Catalase (CAT), ascorbate peroxidate (APX), glutathione reductase (GR), and superoxide dismutase (SOD) are important ROS-quenching enzymes. Activities of APX, CAT, GR, and SOD were assayed over time following rolling, single-cutting, and double-cutting. Efficiency of PSII and lipid peroxidation were measured to quantify oxidative injury. Activities of APX and CAT were transiently reduced in rolled, single-cut, and double-cut grasses, which may result in accumulation of hydrogen peroxide (H2O2). However, accumulation of H2O2 was not sufficient to cause lipid peroxidation, likely because of increased GR reductase activity. Decreases in efficiency of PSII were observed in rolled, single-cut, and double-cut grasses, suggesting reduced efficiency and inhibition of photosynthesis. Duration and level of changes observed in antioxidant enzyme activities and efficiency of PSII of double-cut grasses suggest that multiple cuttings are more injurious to plant growth than rolling or single-cutting." |
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| Language: | English |
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| References: | 0 |
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| Note: | Partial reprint appears in Carolinas Green, January/February 2010, p. 14
"FG-470/July 2006"
Also distributed on CD |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Howieson, M. J., and N. Christians. 2006. Activities of antioxidant enzymes, efficiency of PSII, and lipid peroxidation in mowed creeping bentgrass. Iowa Turfgrass Res. Rep. p. [1]. |
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MSU catalog number: SB 433 .A1 I55 |
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