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A phylogenomic approach reveals a low somatic mutation rate in a long-lived plant.

ABSTRACT: Somatic mutations can have important effects on the life history, ecology, and evolution of plants, but the rate at which they accumulate is poorly understood and difficult to measure directly. Here, we develop a method to measure somatic mutations in individual plants and use it to estimate the somatic mutation rate in a large, long-lived, phenotypically mosaic Eucalyptus melliodora tree. Despite being 100 times larger than Arabidopsis, this tree has a per-generation mutation rate only ten times greater, which suggests that this species may have evolved mechanisms to reduce the mutation rate per unit of growth. This adds to a growing body of evidence that illuminates the correlated evolutionary shifts in mutation rate and life history in plants.

SUBMITTER: Orr AJ

PROVIDER: S-EPMC7126060 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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A phylogenomic approach reveals a low somatic mutation rate in a long-lived plant.

Orr Adam J AJ Padovan Amanda A Kainer David D Külheim Carsten C Bromham Lindell L Bustos-Segura Carlos C Foley William W Haff Tonya T Hsieh Ji-Fan JF Morales-Suarez Alejandro A Cartwright Reed A RA Lanfear Robert R

Proceedings. Biological sciences 20200311 1922

Somatic mutations can have important effects on the life history, ecology, and evolution of plants, but the rate at which they accumulate is poorly understood and difficult to measure directly. Here, we develop a method to measure somatic mutations in individual plants and use it to estimate the somatic mutation rate in a large, long-lived, phenotypically mosaic <i>Eucalyptus melliodora</i> tree. Despite being 100 times larger than <i>Arabidopsis,</i> this tree has a per-generation mutation rate ...[more]

PMID: 32156194

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