Evolutionary maintenance of genomic diversity within arbuscular mycorrhizal fungi

Thomas W. Scott, E. Toby Kiers, Guy A. Cooper, Miguel dos Santos, Stuart A. West

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Most organisms are built from a single genome. In striking contrast, arbuscular mycorrhizal fungi appear to maintain genomic variation within an individual fungal network. Arbuscular mycorrhizal fungi dwell in the soil, form mutualistic networks with plants, and bear multiple, potentially genetically diverse nuclei within a network. We explore, from a theoretical perspective, why such genetic diversity might be maintained within individuals. We consider selection acting within and between individual fungal networks. We show that genetic diversity could provide a benefit at the level of the individual, by improving growth in variable environments, and that this can stabilize genetic diversity even in the presence of nuclear conflict. Arbuscular mycorrhizal fungi complicate our understanding of organismality, but our findings offer a way of understanding such biological anomalies.

Original languageEnglish
Pages (from-to)2425-2435
Number of pages11
JournalEcology and Evolution
Volume9
Issue number5
Early online date11 Feb 2019
DOIs
Publication statusPublished - Mar 2019

Fingerprint

fungi
biological diversity
mycorrhizal fungi
maintenance
genomics
fungus
genetic variation
dwell
genome
bears
organisms
anomaly
soils
anomalies
nuclei
genetic diversity
soil

Keywords

  • arbuscular mycorrhizal fungi
  • chimera
  • genetic conflict
  • individuality
  • intraorganismal genetic heterogeneity
  • levels of selection
  • modular organisms
  • mosaic
  • mycorrhizal networks
  • organismality

Cite this

Scott, Thomas W. ; Kiers, E. Toby ; Cooper, Guy A. ; dos Santos, Miguel ; West, Stuart A. / Evolutionary maintenance of genomic diversity within arbuscular mycorrhizal fungi. In: Ecology and Evolution. 2019 ; Vol. 9, No. 5. pp. 2425-2435.
@article{0a4525f351434d488889a6e756ca802e,
title = "Evolutionary maintenance of genomic diversity within arbuscular mycorrhizal fungi",
abstract = "Most organisms are built from a single genome. In striking contrast, arbuscular mycorrhizal fungi appear to maintain genomic variation within an individual fungal network. Arbuscular mycorrhizal fungi dwell in the soil, form mutualistic networks with plants, and bear multiple, potentially genetically diverse nuclei within a network. We explore, from a theoretical perspective, why such genetic diversity might be maintained within individuals. We consider selection acting within and between individual fungal networks. We show that genetic diversity could provide a benefit at the level of the individual, by improving growth in variable environments, and that this can stabilize genetic diversity even in the presence of nuclear conflict. Arbuscular mycorrhizal fungi complicate our understanding of organismality, but our findings offer a way of understanding such biological anomalies.",
keywords = "arbuscular mycorrhizal fungi, chimera, genetic conflict, individuality, intraorganismal genetic heterogeneity, levels of selection, modular organisms, mosaic, mycorrhizal networks, organismality",
author = "Scott, {Thomas W.} and Kiers, {E. Toby} and Cooper, {Guy A.} and {dos Santos}, Miguel and West, {Stuart A.}",
year = "2019",
month = "3",
doi = "10.1002/ece3.4834",
language = "English",
volume = "9",
pages = "2425--2435",
journal = "Ecology and Evolution",
issn = "2045-7758",
publisher = "John Wiley and Sons Ltd",
number = "5",

}

Evolutionary maintenance of genomic diversity within arbuscular mycorrhizal fungi. / Scott, Thomas W.; Kiers, E. Toby; Cooper, Guy A.; dos Santos, Miguel; West, Stuart A.

In: Ecology and Evolution, Vol. 9, No. 5, 03.2019, p. 2425-2435.

Research output: Contribution to JournalArticleAcademicpeer-review

TY - JOUR

T1 - Evolutionary maintenance of genomic diversity within arbuscular mycorrhizal fungi

AU - Scott, Thomas W.

AU - Kiers, E. Toby

AU - Cooper, Guy A.

AU - dos Santos, Miguel

AU - West, Stuart A.

PY - 2019/3

Y1 - 2019/3

N2 - Most organisms are built from a single genome. In striking contrast, arbuscular mycorrhizal fungi appear to maintain genomic variation within an individual fungal network. Arbuscular mycorrhizal fungi dwell in the soil, form mutualistic networks with plants, and bear multiple, potentially genetically diverse nuclei within a network. We explore, from a theoretical perspective, why such genetic diversity might be maintained within individuals. We consider selection acting within and between individual fungal networks. We show that genetic diversity could provide a benefit at the level of the individual, by improving growth in variable environments, and that this can stabilize genetic diversity even in the presence of nuclear conflict. Arbuscular mycorrhizal fungi complicate our understanding of organismality, but our findings offer a way of understanding such biological anomalies.

AB - Most organisms are built from a single genome. In striking contrast, arbuscular mycorrhizal fungi appear to maintain genomic variation within an individual fungal network. Arbuscular mycorrhizal fungi dwell in the soil, form mutualistic networks with plants, and bear multiple, potentially genetically diverse nuclei within a network. We explore, from a theoretical perspective, why such genetic diversity might be maintained within individuals. We consider selection acting within and between individual fungal networks. We show that genetic diversity could provide a benefit at the level of the individual, by improving growth in variable environments, and that this can stabilize genetic diversity even in the presence of nuclear conflict. Arbuscular mycorrhizal fungi complicate our understanding of organismality, but our findings offer a way of understanding such biological anomalies.

KW - arbuscular mycorrhizal fungi

KW - chimera

KW - genetic conflict

KW - individuality

KW - intraorganismal genetic heterogeneity

KW - levels of selection

KW - modular organisms

KW - mosaic

KW - mycorrhizal networks

KW - organismality

UR - http://www.scopus.com/inward/record.url?scp=85062647488&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85062647488&partnerID=8YFLogxK

U2 - 10.1002/ece3.4834

DO - 10.1002/ece3.4834

M3 - Article

VL - 9

SP - 2425

EP - 2435

JO - Ecology and Evolution

JF - Ecology and Evolution

SN - 2045-7758

IS - 5

ER -