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| Web URL(s): | https://turf.rutgers.edu/wp-content/uploads/2024/03/symposium-2024.pdf#page=35
Last checked: 04/11/2024
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | McBride, Sean;
Rossi, Stephanie;
Huang, Bingru |
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| Author Affiliation: | Department of Plant Biology, Rutgers University |
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| Title: | Differential physiological and metabolic responses to heat stress in annual bluegrass (Poa annua) and creeping bentgrass (Agrostis stolonifera) |
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| Section: | Poster presentations
Other records with the "Poster presentations" Section
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| Meeting Info.: | Institute for Food, Nutrition, and Health Building, Room 101: March 14, 2024 |
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| Source: | Proceedings of the Thirty-Third Annual RutgersTurfgrass Symposium. Vol. 33, 2024, p. 35. |
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| Publishing Information: | School of Environmental and Biological Sciences, Rutgers University |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Heat stress is a major factor limiting growth of cool-season turfgrass species. Different species vary in their response to heat stress. Annual bluegrass (Poa annua) is a cool-season grass species that is characterized to have relatively poor tolerance to heat stress. P. annua is commonly found co-present on putting greens with creeping bentgrass (Agrostis stolonifera). On these mixed greens heat stress induced summer decline is more severe in P. annua and often precedes that of A. stolonifera. This results in an uneven putting green surface that is unattractive and affects ball roll. Little is known about the mechanisms governing P. annuas low tolerance to heat stress. The goal of this study is to compare P. annua physiological and metabolic responses to the more tolerant A. stolonifera and identify significant pathways associated with P. annuas heat susceptibility. P. annua and A. stolonifera were grown in controlled growth chambers under two temperature treatments: 22/17 °C (day/night) for 42 days (unstressed control) and 35/30 °C for 42 days (heat stressed). Visual turf quality (TQ), percent green canopy cover, and electrolyte leakage (EL) were measured weekly during the study. After 42 days of heat stress, leaf samples were collected and analyzed by LC-MS for metabolite content to compare concentration differences between heat stressed and unstressed control groups. Relative to the control levels, heat stressed P. annua exhibited more severe declines in TQ and percent green canopy cover and higher levels of cell membrane EL than A. stolonifera. Metabolites were regulated differentially between P. annua and A. stolonifera after 42 days heat stress relative to control levels, including organic acids, amino acids, and carbohydrates. KEGG analysis identified unique pathways effected in P. annua based on the differentially regulated metabolites. These pathways include the downregulation of metabolites within the citric acid cycle, carbon fixation, glycolysis, and pyruvate metabolism, and the upregulation of metabolites involved in branch chained amino acid biosynthesis. The results highlighted in this study indicate pathways that may be involved in P. annua low heat tolerance and give insight on strategies to promote P. annua summer performance." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Original version appears in ASA, CSSA and SSSA International Annual Meetings, 2021, p. 136473, R=317031. R=317031 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McBride, S., S. Rossi, and B. Huang. 2024. Differential physiological and metabolic responses to heat stress in annual bluegrass (Poa annua) and creeping bentgrass (Agrostis stolonifera). Proc. Rutgers Turfgrass Symp. 33:p. 35. |
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| Web URL(s):
https://turf.rutgers.edu/wp-content/uploads/2024/03/symposium-2024.pdf#page=35
Last checked: 04/11/2024
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b3696858 |
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