TY - JOUR
T1 - Asexual Epichloë Endophytes Do Not Consistently Alter Arbuscular Mycorrhizal Fungi Colonization in Three Grasses
AU - Kalosa-Kenyon, Eric
AU - Slaughter, Lindsey C.
AU - Rudgers, Jennifer A.
AU - Mcculley, Rebecca L.
N1 - Publisher Copyright:
© 2018 University of Notre Dame. All Rights Reserved.
PY - 2018/4/1
Y1 - 2018/4/1
N2 - Plants commonly host multiple microbial symbionts that regulate productivity and other ecosystem processes, yet multi-symbiont interactions within hosts are rarely examined. We evaluated how the presence of aboveground Epichloë fungal endophytes (E+, symbiotic, and E-, endophyte experimentally removed) altered belowground colonization by arbuscular mycorrhizal fungi (AMF) in three grass species in a common environment. We sampled from E+ and E- populations of woodland bluegrass (Poa sylvestris A. Gray), grove bluegrass (Poa alsodes A. Gray), and tall fescue (Schedonorus arundinaceus Schreb.) in long-term experimental plots in woodlands near Nashville, Indiana. Endophyte symbiosis aboveground increased AMF colonization of roots in both Poa species, although this effect was only significant for hyphal colonization in P. sylvestris. Endophyte symbiosis did not significantly alter AMF colonization in S. arundinaceus, in contrast to prior findings for this species. Our results illustrate the effects of Epichloë sp. on AMF cosymbionts are not easily generalizable across plant-endophyte symbiota, even those that co- occur in the same ecosystem.
AB - Plants commonly host multiple microbial symbionts that regulate productivity and other ecosystem processes, yet multi-symbiont interactions within hosts are rarely examined. We evaluated how the presence of aboveground Epichloë fungal endophytes (E+, symbiotic, and E-, endophyte experimentally removed) altered belowground colonization by arbuscular mycorrhizal fungi (AMF) in three grass species in a common environment. We sampled from E+ and E- populations of woodland bluegrass (Poa sylvestris A. Gray), grove bluegrass (Poa alsodes A. Gray), and tall fescue (Schedonorus arundinaceus Schreb.) in long-term experimental plots in woodlands near Nashville, Indiana. Endophyte symbiosis aboveground increased AMF colonization of roots in both Poa species, although this effect was only significant for hyphal colonization in P. sylvestris. Endophyte symbiosis did not significantly alter AMF colonization in S. arundinaceus, in contrast to prior findings for this species. Our results illustrate the effects of Epichloë sp. on AMF cosymbionts are not easily generalizable across plant-endophyte symbiota, even those that co- occur in the same ecosystem.
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U2 - 10.1674/0003-0031-179.2.157
DO - 10.1674/0003-0031-179.2.157
M3 - Article
AN - SCOPUS:85045012621
SN - 0003-0031
VL - 179
SP - 157
EP - 165
JO - American Midland Naturalist
JF - American Midland Naturalist
IS - 2
ER -