Climate change and Epichloë coenophiala association modify belowground fungal symbioses of tall fescue host

Lindsey C. Slaughter; Jim A. Nelson; Elizabeth Carlisle; Marie Bourguignon; Randy D. Dinkins; Timothy D. Phillips; Rebecca L. McCulley

doi:10.1016/j.funeco.2017.10.002

Climate change and Epichloë coenophiala association modify belowground fungal symbioses of tall fescue host

Lindsey C. Slaughter, Jim A. Nelson, Elizabeth Carlisle, Marie Bourguignon, Randy D. Dinkins, Timothy D. Phillips, Rebecca L. McCulley

Plant and Soil Sciences

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Human alteration of symbiont genetics among aboveground endophytic Epichloë coenophiala strains within tall fescue (Schedonorus arundinaceus) has led to widespread deployment of novel grass-endophyte combinations, yet little is known about their ecological consequences. In this study, clone pairs (endophyte-infected, endophyte-free) of two tall fescue genotypes received factorial combinations of increased temperature (+3 °C) and precipitation (+30% long-term annual mean) for 2 yr. We measured root arbuscular mycorrhizal fungi (AMF), dark septate endophyte (DSE) colonization, and soil AMF extraradical hyphae (ERH) length. We hypothesized that genetically distinct grass-E. coenophiala associations would differentially affect belowground fungi, and that these relationships would be climate-sensitive. Tall fescue genotype, endophyte presence, and climate treatment interactions affected AMF arbuscules, vesicles, and ERH. DSE decreased with E. coenophiala presence but increased with warming. Genetically distinct tall fescue-E. coenophiala associations may have divergent long-term impacts on other host-symbiont interactions, potentially impacting ecosystem function and response to climate change.

Original language	English
Pages (from-to)	37-46
Number of pages	10
Journal	Fungal Ecology
Volume	31
DOIs	https://doi.org/10.1016/j.funeco.2017.10.002
State	Published - Feb 2018

Bibliographical note

Funding Information:
This project was supported by University of Kentucky's College of Agriculture Research Office , the U.S. Dep. of Energy ( 08-SC-NICCR-1073 ), NSF ( DEB-1021222 ), and a cooperative agreement with the Kentucky Agricultural Experiment Station ( KY006045 ), the USDA-ARS Forage Animal Production Research Unit ( 58-6440-7-135 ), and University of Kentucky Department of Plant and Soil Sciences . We thank Sarah Janse of the Univ. of Kentucky Dep. of Statistics for assistance in statistical analysis, and J. Crutchfield for plant N and P analysis. We also thank Carolyn Young and her team for assistance and training in endophyte presence and genetic verification analyses within her laboratory at the Samuel Roberts Noble Foundation. Thanks to Pierre Mas, Anna Joy Thompson, and Josephine Wendroth for their many hours spent diligently brushing and washing roots and sieving soils for this study.

Publisher Copyright:
© 2017 Elsevier Ltd and British Mycological Society

Keywords

Arbuscular mycorrhizal fungi
Climate change
Dark septate endophyte
Grassland
Neotyphodium
Warming

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Ecology
Ecological Modeling
Plant Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.funeco.2017.10.002

Cite this

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title = "Climate change and Epichlo{\"e} coenophiala association modify belowground fungal symbioses of tall fescue host",

abstract = "Human alteration of symbiont genetics among aboveground endophytic Epichlo{\"e} coenophiala strains within tall fescue (Schedonorus arundinaceus) has led to widespread deployment of novel grass-endophyte combinations, yet little is known about their ecological consequences. In this study, clone pairs (endophyte-infected, endophyte-free) of two tall fescue genotypes received factorial combinations of increased temperature (+3 °C) and precipitation (+30% long-term annual mean) for 2 yr. We measured root arbuscular mycorrhizal fungi (AMF), dark septate endophyte (DSE) colonization, and soil AMF extraradical hyphae (ERH) length. We hypothesized that genetically distinct grass-E. coenophiala associations would differentially affect belowground fungi, and that these relationships would be climate-sensitive. Tall fescue genotype, endophyte presence, and climate treatment interactions affected AMF arbuscules, vesicles, and ERH. DSE decreased with E. coenophiala presence but increased with warming. Genetically distinct tall fescue-E. coenophiala associations may have divergent long-term impacts on other host-symbiont interactions, potentially impacting ecosystem function and response to climate change.",

keywords = "Arbuscular mycorrhizal fungi, Climate change, Dark septate endophyte, Grassland, Neotyphodium, Warming",

author = "Slaughter, {Lindsey C.} and Nelson, {Jim A.} and Elizabeth Carlisle and Marie Bourguignon and Dinkins, {Randy D.} and Phillips, {Timothy D.} and McCulley, {Rebecca L.}",

note = "Funding Information: This project was supported by University of Kentucky's College of Agriculture Research Office , the U.S. Dep. of Energy ( 08-SC-NICCR-1073 ), NSF ( DEB-1021222 ), and a cooperative agreement with the Kentucky Agricultural Experiment Station ( KY006045 ), the USDA-ARS Forage Animal Production Research Unit ( 58-6440-7-135 ), and University of Kentucky Department of Plant and Soil Sciences . We thank Sarah Janse of the Univ. of Kentucky Dep. of Statistics for assistance in statistical analysis, and J. Crutchfield for plant N and P analysis. We also thank Carolyn Young and her team for assistance and training in endophyte presence and genetic verification analyses within her laboratory at the Samuel Roberts Noble Foundation. Thanks to Pierre Mas, Anna Joy Thompson, and Josephine Wendroth for their many hours spent diligently brushing and washing roots and sieving soils for this study. Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd and British Mycological Society",

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doi = "10.1016/j.funeco.2017.10.002",

language = "English",

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T1 - Climate change and Epichloë coenophiala association modify belowground fungal symbioses of tall fescue host

AU - Slaughter, Lindsey C.

AU - Nelson, Jim A.

AU - Carlisle, Elizabeth

AU - Bourguignon, Marie

AU - Dinkins, Randy D.

AU - Phillips, Timothy D.

AU - McCulley, Rebecca L.

N1 - Funding Information: This project was supported by University of Kentucky's College of Agriculture Research Office , the U.S. Dep. of Energy ( 08-SC-NICCR-1073 ), NSF ( DEB-1021222 ), and a cooperative agreement with the Kentucky Agricultural Experiment Station ( KY006045 ), the USDA-ARS Forage Animal Production Research Unit ( 58-6440-7-135 ), and University of Kentucky Department of Plant and Soil Sciences . We thank Sarah Janse of the Univ. of Kentucky Dep. of Statistics for assistance in statistical analysis, and J. Crutchfield for plant N and P analysis. We also thank Carolyn Young and her team for assistance and training in endophyte presence and genetic verification analyses within her laboratory at the Samuel Roberts Noble Foundation. Thanks to Pierre Mas, Anna Joy Thompson, and Josephine Wendroth for their many hours spent diligently brushing and washing roots and sieving soils for this study. Publisher Copyright: © 2017 Elsevier Ltd and British Mycological Society

PY - 2018/2

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N2 - Human alteration of symbiont genetics among aboveground endophytic Epichloë coenophiala strains within tall fescue (Schedonorus arundinaceus) has led to widespread deployment of novel grass-endophyte combinations, yet little is known about their ecological consequences. In this study, clone pairs (endophyte-infected, endophyte-free) of two tall fescue genotypes received factorial combinations of increased temperature (+3 °C) and precipitation (+30% long-term annual mean) for 2 yr. We measured root arbuscular mycorrhizal fungi (AMF), dark septate endophyte (DSE) colonization, and soil AMF extraradical hyphae (ERH) length. We hypothesized that genetically distinct grass-E. coenophiala associations would differentially affect belowground fungi, and that these relationships would be climate-sensitive. Tall fescue genotype, endophyte presence, and climate treatment interactions affected AMF arbuscules, vesicles, and ERH. DSE decreased with E. coenophiala presence but increased with warming. Genetically distinct tall fescue-E. coenophiala associations may have divergent long-term impacts on other host-symbiont interactions, potentially impacting ecosystem function and response to climate change.

AB - Human alteration of symbiont genetics among aboveground endophytic Epichloë coenophiala strains within tall fescue (Schedonorus arundinaceus) has led to widespread deployment of novel grass-endophyte combinations, yet little is known about their ecological consequences. In this study, clone pairs (endophyte-infected, endophyte-free) of two tall fescue genotypes received factorial combinations of increased temperature (+3 °C) and precipitation (+30% long-term annual mean) for 2 yr. We measured root arbuscular mycorrhizal fungi (AMF), dark septate endophyte (DSE) colonization, and soil AMF extraradical hyphae (ERH) length. We hypothesized that genetically distinct grass-E. coenophiala associations would differentially affect belowground fungi, and that these relationships would be climate-sensitive. Tall fescue genotype, endophyte presence, and climate treatment interactions affected AMF arbuscules, vesicles, and ERH. DSE decreased with E. coenophiala presence but increased with warming. Genetically distinct tall fescue-E. coenophiala associations may have divergent long-term impacts on other host-symbiont interactions, potentially impacting ecosystem function and response to climate change.

KW - Arbuscular mycorrhizal fungi

KW - Climate change

KW - Dark septate endophyte

KW - Grassland

KW - Neotyphodium

KW - Warming

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Climate change and Epichloë coenophiala association modify belowground fungal symbioses of tall fescue host

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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