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Inducible defense phytohormones in annual bluegrass (Poa annua) and creeping bentgrass (Agrostis stolonifera) in response to annual bluegrass weevil (Listronotus maculicollis) infestation

The annual bluegrass weevil (Listronotus maculicollis) is the most damaging insect pest of short-mown turfgrass on golf courses in eastern North America. Listronotus maculicollis larvae cause limited visible damage as stem-borers (L1-3), compared to the crown-feeding (L4-5) developmental instars. Prolonged larval feeding results in discoloration and formation of irregular patches of dead turf, exposing soil on high-value playing surfaces (fairways, collars, tee boxes, and putting greens). Annual bluegrass (Poa annua) is highly susceptible to L. maculicollis compared to a tolerant alternate host plant, creeping bentgrass (Agrostis stolonifera). This study explored whether defense signaling phytohormones contribute to A. stolonifera tolerance in response to L. maculicollis. Concentrations (ng/g) of salicylic acid (SA), jasmonic acid (JA), jasmonic-isoleucine (JA-Ile), 12-oxophytodienoic acid (OPDA), and abscisic acid (ABA) were extracted from turfgrass (leaf, stem, and root) tissue samples as mean larval age reached 2nd (L2), 3rd (L3), and 4th (L4) instar. Poa annua infested with L. maculicollis larvae (L2-4) possessed significantly greater SA in above-ground tissues than A. stolonifera. Levels of constitutive JA, JA-Ile, OPDA, and ABA were significantly higher within non-infested A. stolonifera aboveground tissues compared to P. annua. Inducible defense phytohormones may play a role in P. annua susceptibility to L. maculicollis but are unlikely to provide tolerance in A. stolonifera. Additional studies in turfgrass breeding, particularly focusing on cultivar selection for increased constitutive JA content, could provide a non-chemical alternative management strategy for L. maculicollis for turfgrass managers.

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Work Title Inducible defense phytohormones in annual bluegrass (Poa annua) and creeping bentgrass (Agrostis stolonifera) in response to annual bluegrass weevil (Listronotus maculicollis) infestation
Access
Open Access
Creators
  1. Audrey Simard
  2. Megan Gendjar
  3. Emily Merewitz
  4. Benjamin A. McGraw
Keyword
  1. Annual bluegrass weevil
  2. Turfgrass
  3. Host plant resistance
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. Journal of Economic Entomology
Publication Date July 9, 2024
Publisher Identifier (DOI)
  1. https://doi.org/10.1093/jee/toae153
Deposited February 10, 2025

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Version 1
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  • Created

    February 10, 2025 13:16 by Researcher Metadata Database

  • Added Simard_et_al._2024.pdf

    February 10, 2025 13:16 by Researcher Metadata Database

  • Added Creator Audrey Simard

    February 10, 2025 13:16 by Researcher Metadata Database

  • Added Creator Megan Gendjar

    February 10, 2025 13:16 by Researcher Metadata Database

  • Added Creator Emily Merewitz

    February 10, 2025 13:16 by Researcher Metadata Database

  • Added Creator Benjamin A. Mcgraw

    February 10, 2025 13:16 by Researcher Metadata Database

  • Published

    February 10, 2025 13:16 by Researcher Metadata Database

  • Updated

    February 10, 2025 21:04 by [unknown user]

  • Updated Keyword, Description, Publication Date Show Changes

    April 07, 2025 13:54 by avs5190

    Keyword
    • Annual bluegrass weevil, Turfgrass, Host plant resistance
    Description
    • <p>The annual bluegrass weevil (Listronotus maculicollis) is the most damaging insect pest of short-mown turfgrass on golf courses in eastern North America. Listronotus maculicollis larvae cause limited visible damage as stem-borers (L1-3), compared to the crown-feeding (L4-5) developmental instars. Prolonged larval feeding results in discoloration and formation of irregular patches of dead turf, exposing soil on high-value playing surfaces (fairways, collars, tee boxes, and putting greens). Annual bluegrass (Poa annua) is highly susceptible to L. maculicollis compared to a tolerant alternate host plant, creeping bentgrass (Agrostis stolonifera). This study explored whether defense signaling phytohormones contribute to A. stolonifera tolerance in response to L. maculicollis. Concentrations (ng/g) of salicylic acid (SA), jasmonic acid (JA), jasmonic-isoleucine (JA-Ile), 12-oxophytodienoic acid (OPDA), and abscisic acid (ABA) were extracted from turfgrass (leaf, stem, and root) tissue samples as mean larval age reached 2nd (L2), 3rd (L3), and 4th (L4) instar. Poa annua infested with L. maculicollis larvae (L2-4) possessed significantly greater SA in above-ground tissues than A. stolonifera. Levels of constitutive JA, JA-Ile, OPDA, and ABA were significantly higher within non-infested A. stolonifera aboveground tissues compared to P. annua. Inducible defense phytohormones may play a role in P. annua susceptibility to L. maculicollis but are unlikely to provide tolerance in A. stolonifera. Additional studies in turfgrass breeding, particularly focusing on cultivar selection for increased constitutive JA content, could provide a non-chemical alternative management strategy for L. maculicollis for turfgrass managers.</p>
    • <p>The annual bluegrass weevil (_Listronotus maculicollis_) is the most damaging insect pest of short-mown turfgrass on golf courses in eastern North America. _Listronotus maculicollis_ larvae cause limited visible damage as stem-borers (L1-3), compared to the crown-feeding (L4-5) developmental instars. Prolonged larval feeding results in discoloration and formation of irregular patches of dead turf, exposing soil on high-value playing surfaces (fairways, collars, tee boxes, and putting greens). Annual bluegrass (_Poa annua_) is highly susceptible to _L. maculicollis_ compared to a tolerant alternate host plant, creeping bentgrass (_Agrostis stolonifera_). This study explored whether defense signaling phytohormones contribute to _A. stolonifera_ tolerance in response to _L. maculicollis_. Concentrations (ng/g) of salicylic acid (SA), jasmonic acid (JA), jasmonic-isoleucine (JA-Ile), 12-oxophytodienoic acid (OPDA), and abscisic acid (ABA) were extracted from turfgrass (leaf, stem, and root) tissue samples as mean larval age reached 2nd (L2), 3rd (L3), and 4th (L4) instar. _Poa annua_ infested with _L. maculicollis_ larvae (L2-4) possessed significantly greater SA in above-ground tissues than _A. stolonifera_. Levels of constitutive JA, JA-Ile, OPDA, and ABA were significantly higher within non-infested _A. stolonifera_ aboveground tissues compared to _P. annua_. Inducible defense phytohormones may play a role in _P. annua_ susceptibility to _L. maculicollis_ but are unlikely to provide tolerance in _A. stolonifera_. Additional studies in turfgrass breeding, particularly focusing on cultivar selection for increased constitutive JA content, could provide a non-chemical alternative management strategy for _L. maculicollis_ for turfgrass managers.</p>
    Publication Date
    • 2024-10-01
    • 2024-07-09
  • Renamed Creator Benjamin A. McGraw Show Changes

    April 07, 2025 13:54 by avs5190

    • Benjamin A. Mcgraw
    • Benjamin A. McGraw