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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/2005jou910.pdf
Last checked: 12/27/2008
Requires: PDF Reader |
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| Access Restriction: | Certain MSU-hosted archive URLs may be restricted to legacy database members. |
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| Publication Type:
| Refereed |
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| Author(s): | Zhang, Xunzhong;
Ervin, E. H. |
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| Author Affiliation: | Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia |
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| Title: | Effects of methyl jasmonate and salicylic acid on UV-B tolerance associated with free radical scavenging capacity in Poa pratensis |
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| Section: | Physiology/stress physiology
Other records with the "Physiology/stress physiology" Section
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| Meeting Info.: | Llandudno, Wales, UK: July 10-15 2005 |
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| Source: | International Turfgrass Society Research Journal. Vol. 10, No. Part 2, 2005, p. 910-915. |
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| Publishing Information: | Aberystywth, Ceredigion, UK: International Turfgrass Society |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Ultraviolet radiation; Turfgrass quality; Poa pratensis; Transplanting; Salicylic acid; Environmental stress; Methyl jasmonate; Antioxidants; Photochemical efficiency; Shoots
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| Cultivar Names: | Midnight |
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| Abstract/Contents: | "High ultraviolet-B (UV-B; 280-320 nm wavelength) radiation may cause significant quality decline of Kentucky bluegrass (Poa pratensis L.) sod during summer transplanting. An exogenous application of secondary hormones may alleviate UV-B injury by up-regulating plant defense systems. Salicylic acid (SA) and methyl jasmonate (MJ) are phytohormones that have been associated with signal transduction pathways related to stress defenses. This study was conducted to examine the influences of exogenous SA and MJ on antioxidant enzymes, photochemical efficiency (PE) and turfgrass quality of Poa pratensis grown under supplementary UV-B (70 μmol m-2s-1) stress conditions. Three-year old 'Midnight' Kentucky bluegrass plugs were taken from the field and treated with SA at 150 mg m-2, MJ at 50 mg -2, or not treated. A randomized block design was used with four replications. The activity of antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) were measured at d one, five, and 10 after UV-B initiation and 15 days after UV-B removal. The UV-B stress reduced PE and turfgrass quality as well as CAT and APX activities. However, SOD activity increased at d five of UV-B stress. Exogenous SA and MJ increased SOD and CAT activities at d 10 of UV-B stress, resulting in improved turfgrass quality and PE. The data suggest that applications of SA and MJ may increase antioxidant activities and lessen turfgrass shoot tissue injury under UV-B stress." |
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| Language: | English |
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| References: | 28 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zhang, X., and E. H. Ervin. 2005. Effects of methyl jasmonate and salicylic acid on UV-B tolerance associated with free radical scavenging capacity in Poa pratensis. Int. Turfgrass Soc. Res. J. 10(Part 2):p. 910-915. |
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| Web URL(s):
https://archive.lib.msu.edu/tic/its/articles/2005jou910.pdf
Last checked: 12/27/2008
Requires: PDF Reader |
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MSU catalog number: SB 433 .I52 v. 10 |
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