Mutualism-disrupting allelopathic invader drives carbon stress and vital rate decline in a forest perennial herb

AoB Plants
Nathan L BrouwerSusan Kalisz

Abstract

Invasive plants can negatively affect belowground processes and alter soil microbial communities. For native plants that depend on soil resources from root fungal symbionts (RFS), invasion could compromise their resource status and subsequent ability to manufacture and store carbohydrates. Herbaceous perennials that depend on RFS-derived resources dominate eastern North American forest understories. Therefore, we predict that forest invasion by Alliaria petiolata, an allelopathic species that produces chemicals that are toxic to RFS, will diminish plant carbon storage and fitness. Over a single growing season, the loss of RFS could reduce a plant's photosynthetic physiology and carbon storage. If maintained over multiple growing seasons, this could create a condition of carbon stress and declines in plant vital rates. Here we characterize the signals of carbon stress over a short timeframe and explore the long-term consequence of Alliaria invasion using Maianthemum racemosum, an RFS-dependent forest understory perennial. First, in a greenhouse experiment, we treated the soil of potted Maianthemum with fresh leaf tissue from either Alliaria or Hesperis matronalis (control) for a single growing season. Alliaria-treated plants exh...Continue Reading

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Citations

Sep 29, 2015·The New Phytologist·Elizabeth G Pringle
Mar 22, 2018·Critical Reviews in Analytical Chemistry·Muhammad Imran Din, Aneela Rani
Mar 19, 2015·American Journal of Botany·Christopher T Martine, Alison N Hale
Mar 25, 2021·Ecology Letters·Lalasia Bialic-MurphySusan Kalisz
Aug 21, 2021·The New Phytologist· InderjitT Martijn Bezemer

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Software Mentioned

R
multcomp
R package marked
R package msm
lme4
R Development Core Team

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