Full TGIF Record # 309467
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/119287
    Last checked: 11/27/2019
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Rossi, Stephanie; Huang, Bingru
Author Affiliation:Rossi: Plant Biology and Pathology, Rutgers University, New Brunswick, NJ; Huang: Plant Biology, Rutgers University, New Brunswick, NJ
Title:Metabolic regulation of heat-induced leaf senescence in creeping bentgrass by chemical priming
Section:C05 turfgrass science
Other records with the "C05 turfgrass science" Section

Turf ecology and management oral I: Physiology, irrigation, and abiotic stress (includes student competition)
Other records with the "Turf ecology and management oral I: Physiology, irrigation, and abiotic stress (includes student competition)" Section
Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 119287.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Keywords:TIC Keywords: Agrostis stolonifera; Chlorophyll content; Electrolyte leakage; Foliar feeding; Growth regulator evaluation; Heat stress; Metabolism; Senescence; Turfgrass quality
Abstract/Contents:"Heat-induced leaf senescence occurs as a result of prolonged exposure to high temperatures in creeping bentgrass (Agrostis stolonifera L.) and is responsible for a reduction in turf quality and performance. The objectives of this study were to identify the metabolic mechanisms by which small molecules (SMs) that may exhibit plant growth regulator (PGR) properties regulate heat-induced leaf senescence in creeping bentgrass. Plants were exposed to heat stress (35/30 ┬░C, day/night) or non-stress (22/18 ┬░C, day/night) temperature conditions for 25 d either with or without PGR-SMs as a foliar spray (chemical priming), and the physiological parameters of turf quality, chlorophyll content, and electrolyte leakage were measured. Additionally, the activities of chlorophyll-synthesizing and - degrading enzymes were quantified. All plants treated with PGR-SMs had significantly higher turf quality, lower electrolyte leakage, higher chlorophyll a and b levels, and higher total chlorophyll content than untreated controls. Results of the current study indicate that heat-induced leaf senescence was suppressed by exogenous application of those PGR-SMs. The manners in which PGR-SMs affect chlorophyll metabolism involving chlorophyll synthesis and degradation processes, as well as antioxidant metabolism, will be discussed."
Language:English
References:0
Note:This item is an abstract only!
"131-5"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rossi, S., and B. Huang. 2019. Metabolic regulation of heat-induced leaf senescence in creeping bentgrass by chemical priming. Agron. Abr. p. 119287.
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    Last checked: 11/27/2019
    Requires: JavaScript
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