Full TGIF Record # 325041
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Web URL(s):https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/145033
    Last checked: 02/02/2023
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Lu, Jefferson; DaCosta, Michelle
Author Affiliation:Lu: Presenting Author and University of Massachusetts-Amherst; DaCosta: University of Massachusetts-Amherst
Title:Impacts of nitrogen fertility on plant health activation with Acibenzolar-S-methyl
Section:Turfgrass Physiology and Abiotic Stress Oral (includes student competition)
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C05 turfgrass science
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Meeting Info.:Baltimore, Maryland: November 6-9, 2022
Source:ASA, CSSA, SSSA International Annual Meeting. 2022, p. 145033.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Acibenzolar-S-methyl (ASM) is a priming compound that has been shown to stimulate the systemic acquired resistance pathway in plants. When applied as part of fungicide formulations, ASM works synergistically to improve disease management. More recently, products containing ASM have also been demonstrated to improve plant health in response to abiotic stresses. Based on our prior research, ASM induces significant alterations in turfgrass metabolism, including the accumulation of specialized metabolites involved in stress protection. However, little is known about the requirements to sustain the ASM-associated shifts in metabolism when turfgrasses are exposed to abiotic stress. In particular, there is little known about whether differences in nitrogen (N) input could impact the accumulation of stress-induced compounds, thereby influencing the extent of ASM-induced stress resistance. Therefore the objectives of this study were to (i) evaluate the interactive effects of ASM on creeping bentgrass (Agrostis stolonifera) quality under two different N regimes and two temperature conditions; and (ii) determine changes in the accumulation of ASM-induced metabolites in response to differences in N availability. The experiment consisted of eight treatment combinations, including two N levels (high N, 0.48 g N m-2 and low N, 0.12 g N m-2), two temperature levels (optimal, 20┬░/15┬░C day/night, and high, 35┬░/30┬░C day/night), and two priming levels (untreated and ASM, 1.4 mg m-2 every two weeks). Nitrogen treatments were applied weekly starting 6 weeks prior to temperature stress and then continued weekly for the duration of the experiment. Plants were also treated with ASM three times prior to high temperature stress and then continued on a bi-weekly basis throughout the experiment. Turfgrass health was monitored weekly based on changes in turfgrass quality, leaf chlorophyll content, and photochemical efficiency. Additionally, clippings were collected for determination of leaf N content and N-associated metabolites."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lu, J., and M. DaCosta. 2022. Impacts of nitrogen fertility on plant health activation with Acibenzolar-S-methyl. Agron. Abr. p. 145033.
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