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Can endosymbiotic microbes modulate natural selection in plant populations? An example with Lolium perenne and its fungal endophyte

Can endosymbiotic microbes modulate natural selection in plant populations? An example with... Many plant species are symbiotic with systemic microbes. For example, many grasses are inhabited by fungal endophytes that affect aspects of their host’s physiology, morphology, and reproduction. However, there have not been any analyses of the potential effect of endophytes on the strength of phenotypic selection on quantitative traits. Here, a previously published data set on several life history traits measured for two years in a field population of 12–13 Lolium perenne genotypes, each replicated as symbiotic and non-symbiotic plants, was analyzed using the standard Lande-Arnold method of selection analysis. In one year, endophytic symbionts reduced the strength of selection on the number of reproductive tillers when relative fitness was expressed as seed yield. Also, symbionts selected for reduced tiller production when fitness was expressed as mean seed mass. These changes in the strength of selection only occurred when fitness of genotypes when symbiotic was unrelated to fitness of the same genotypes when non-symbiotic. In a second year, when fitness of symbiotic and non-symbiotic groups were significantly correlated, there was no detectable selection on reproductive tiller production. Because the effects of microbial endosymbionts were only shown for one year in a single host population, additional research is needed to better assess how endosymbionts might mediate selective pressures in other natural plant populations. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Symbiosis Springer Journals

Can endosymbiotic microbes modulate natural selection in plant populations? An example with Lolium perenne and its fungal endophyte

Cheplick, Gregory
Symbiosis , Volume 76 (3) – Jun 1, 2018
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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer Science+Business Media B.V., part of Springer Nature
Subject
Life Sciences; Evolutionary Biology; Developmental Biology; Microbiology; Plant Sciences; Ecology
ISSN
0334-5114
eISSN
1878-7665
DOI
10.1007/s13199-018-0563-2
Publisher site
See Article on Publisher Site

Abstract

Many plant species are symbiotic with systemic microbes. For example, many grasses are inhabited by fungal endophytes that affect aspects of their host’s physiology, morphology, and reproduction. However, there have not been any analyses of the potential effect of endophytes on the strength of phenotypic selection on quantitative traits. Here, a previously published data set on several life history traits measured for two years in a field population of 12–13 Lolium perenne genotypes, each replicated as symbiotic and non-symbiotic plants, was analyzed using the standard Lande-Arnold method of selection analysis. In one year, endophytic symbionts reduced the strength of selection on the number of reproductive tillers when relative fitness was expressed as seed yield. Also, symbionts selected for reduced tiller production when fitness was expressed as mean seed mass. These changes in the strength of selection only occurred when fitness of genotypes when symbiotic was unrelated to fitness of the same genotypes when non-symbiotic. In a second year, when fitness of symbiotic and non-symbiotic groups were significantly correlated, there was no detectable selection on reproductive tiller production. Because the effects of microbial endosymbionts were only shown for one year in a single host population, additional research is needed to better assess how endosymbionts might mediate selective pressures in other natural plant populations.

Journal

Symbiosis – Springer Journals

Published: Jun 1, 2018

References

  • Symbiosis lost: imperfect vertical transmission of fungal endophytes in grasses
    Afkhami, ME; Rudgers, JA
  • Functions, meachnisms and regulation of endophytic and epiphytic microbial communities of plants
    Bacon, CW; White, JF
  • Recovery from drought stress in Lolium perenne (Poaceae): are fungal endophytes detrimental?
    Cheplick, GP
  • Approaches to plant evolutionary ecology
    Cheplick, GP
  • Ecology and evolution of the grass-endophyte symbiosis
    Cheplick, GP; Faeth, SH
  • Asexual fungal symbionts alter reproductive allocation and herbivory over time in their native perennial grass hosts
    Faeth, SH
  • Endophyte infection of Festuca eskia enhances seedling survival to drought and cutting at the expense of clonal expansion
    Gibert, A; Hazard, L
  • Interplay between endophyte-prevalence, effects and transmission: insights from a natural grass population
    Gibert, A; Magda, D; Hazard, L
  • Fungal symbionts as manipulators of plant reproductive biology
    Gorischek, AM; Afkhami, ME; Seifert, EK; Rudgers, JA
  • Symbiogenesis: the holobiont as a unit of evolution
    Guerrero, R; Margulis, L; Berlanga, M
  • Imperfect vertical transmission of the endophyte Neotyphodium in exotic grasses in grasslands of the flooding pampa
    Gundel, PE; Garibaldi, LA; Tognetti, PM; Aragón, R; Ghersa, CM; Omacini, M
  • Investigations on the influence of Neotyphodium endophytes on plant growth and seed yield of Lolium perenne genotypes
    Hesse, U; Hahn, H; Andreeva, K; Förster, K; Warnstorff, K; Schöberlein, W; Diepenbrock, W
  • Heritable symbionts contribute to host plant adaptation
    Jaenike, J
  • The strength of phenotypic selection in natural populations
    Kingsolver, JG; Hoekstra, HE; Hoekstra, JM; Berrigan, D; Vignieri, SN; Hill, CE; Hoang, A; Gibert, P; Beerli, P
  • Synthetic analyses of phenotypic selection in natural populations: limitations and future directions
    Kingsolver, JG; Diamond, SE; Siepielski, AM; Carlson, SM
  • The measurement of selection on correlated characters
    Lande, R; Arnold, SJ
  • Nomenclatural realignment of Neotyphodium species with genus Epichloë
    Leuchtmann, A; Bacon, CW; Schardl, CL; White, JF; Tadych, M
  • Endophyte species influence the biomass production of the native grass Achnatherum sibiricum (L.) Keng under high nitrogen availability
    Li, X; Zhou, Y; Mace, W; Qin, J; Liu, H; Chen, W; Ren, A; Gao, Y
  • Adaptations of endophyte-infected cool-season grasses to environmental stresses: mechanisms of drought and mineral stress tolerance
    Malinowski, DP; Belesky, DP
  • Seedling ecology and evolution
    Moles, AT; Leishman, MR
  • Comparative study of growth parameters on diaspores and seedlings between populations of Bromus setifolius from Patagonia, differing in Neotyphodium endophyte infection
    Novas, MV; Gentile, A; Cabral, D
  • A fungal endosymbiont affects host plant recruitment through seed- and litter-mediated mechanisms
    Omacini, M; Chaneton, EJ; Bush, L; Ghersa, CM
  • Mycology
    Popay, Alison
  • Seed production in tall fescue as affected by fungal endophyte
    Rice, JS; Pinkerton, BW; Stringer, WC; Undersander, DJ
  • A fungus among us: broad patterns of endophyte distribution in the grasses
    Rudgers, JA; Afkhami, ME; Rua, MA; Davitt, AJ; Hammer, S; Huguet, VM
  • The effects of endophytes on seed production and seed predation of tall fescue and meadow fescue
    Saari, S; Helander, M; Faeth, SH; Saikkonen, K
  • Defensive mutualism between plants and endophytic fungi?
    Saikkonen, K; Saari, S; Helander, M
  • Broad-scale variation of fungal- endophyte incidence in temperate grasses
    Semmartin, M; Omacini, M; Gundel, PE; Hernández-Agramonte, IM
  • It’s about time: the temporal dynamics of phenotypic selection in the wild
    Siepielski, AM; DiBattista, JD; Carlson, SM
  • The importance of the microbiome of the plant holobiont
    Vandenkoornhuyse, P; Quaiser, A; Duhamel, M; Van, A; Dufresne, A
  • Variable effects of endophytic fungus on seedling establishment of fine fescues
    Wäli, PR; Helander, M; Saloniemi, I; Ahlholm, J; Saikkonen, K