TY - JOUR
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 - Publisher Copyright:
© 2017 Elsevier Ltd and British Mycological Society
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2018/2
Y1 - 2018/2
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
UR - http://www.scopus.com/inward/record.url?scp=85034668761&partnerID=8YFLogxK
U2 - 10.1016/j.funeco.2017.10.002
DO - 10.1016/j.funeco.2017.10.002
M3 - Article
AN - SCOPUS:85034668761
VL - 31
SP - 37
EP - 46
JO - Fungal Ecology
JF - Fungal Ecology
SN - 1754-5048
ER -