Full TGIF Record # 302049
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Web URL(s):https://scisoc.confex.com/scisoc/2018am/meetingapp.cgi/Paper/112691
    Last checked: 11/13/2018
Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Lu, Jefferson; Ebdon, Jeffrey Scott; DaCosta, Michelle
Author Affiliation:Lu: Plant Biology, University of Massachusetts-Amherst, Amherst, MA; Ebdon: Stockbridge School of Agriculture, University of Massachusetts-Amherst, Amherst, MA; DaCosta: Stockbridge, University of Massachusetts-Amherst, Amherst, MA
Title:Examination of synthetic priming agents for improving drought resistance in creeping bentgrass
Section:C05 turfgrass science
Other records with the "C05 turfgrass science" Section

Turf environmental science, rhizosphere ecology, and water oral
Other records with the "Turf environmental science, rhizosphere ecology, and water oral" Section
Meeting Info.:Baltimore, Maryland: November 4-7, 2018
Source:ASA, CSSA and SSSA International Annual Meetings. 2018, p. 112691.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Canadian Society of Agronomy]
# of Pages:1
Keywords:TIC Keywords: Acibenzolar-S-methyl; Agrostis stolonifera; Drought resistance; Horticultural oils; Turfgrass quality; Volumetric water content
Abstract/Contents:"Priming agents are often used alone or mixed with other compounds to enhance plant health and reduce pesticide use in turfgrass systems. Two commonly used priming agents include petroleum-derived spray oils (PDSO) and acibenzolar-S-methyl (ASM), which are reported to activate induced systemic resistance and systemic acquired resistance, respectively. Pretreatment with these priming agents have been reported to improve turf health primarily in response to biotic stresses. However, little is known about the physiological changes associated with the activation of these resistance pathways, and how they may affect abiotic stress resistance. The objectives of this study were (i) to evaluate the effects of PDSO and ASM on turf health in response to reduced irrigation for two creeping bentgrass cultivars varying in drought resistance, and (ii) to examine the impacts of these priming agents on primary metabolism under optimal versus reduced irrigation. The experiment consisted of 12 treatments, including two irrigation levels (well-watered control and moderate drought treatment irrigated at 50% of the control), two cultivars 'Penncross' (sensitive) and '007' (tolerant), and three priming treatments (Untreated, PDSO, and ASM). Plants were pretreated three times with either PDSO (5.1 mL m-2) or ASM (1.4 mg m-2) prior to commencing reduced irrigation, and two additional treatments were made during reduced irrigation period. Weekly measurements included visual assessment of turf quality (TQ), volumetric soil moisture content (VWC), and chlorophyll content index (CCI). Additionally, samples were taken at 3 time points for metabolite analyses corresponding to different stages of priming and stress exposure. Plants exposed to reduced irrigation and primed with either PDSO or ASM maintained a higher TQ and VWC compared to untreated reduced irrigation controls. However, the extent of TQ improvement was dependent on cultivar and priming compound. Shifts in primary metabolites will be discussed in relation to improving stress tolerance of creeping bentgrass."
Language:English
References:0
Note:This item is an abstract only!
"50-6"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lu, J., J. S. Ebdon, and M. DaCosta. 2018. Examination of synthetic priming agents for improving drought resistance in creeping bentgrass. Agron. Abr. p. 112691.
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    Last checked: 11/13/2018
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