Light and Nutrient Dependent Responses in Secondary Metabolites of Plantago lanceolata Offspring Are Due to Phenotypic Plasticity in Experimental Grasslands

PloS One
Annegret Miehe-SteierSybille B Unsicker

Abstract

A few studies in the past have shown that plant diversity in terms of species richness and functional composition can modify plant defense chemistry. However, it is not yet clear to what extent genetic differentiation of plant chemotypes or phenotypic plasticity in response to diversity-induced variation in growth conditions or a combination of both is responsible for this pattern. We collected seed families of ribwort plantain (Plantago lanceolata) from six-year old experimental grasslands of varying plant diversity (Jena Experiment). The offspring of these seed families was grown under standardized conditions with two levels of light and nutrients. The iridoid glycosides, catalpol and aucubin, and verbascoside, a caffeoyl phenylethanoid glycoside, were measured in roots and shoots. Although offspring of different seed families differed in the tissue concentrations of defensive metabolites, plant diversity in the mothers' environment did not explain the variation in the measured defensive metabolites of P. lanceolata offspring. However secondary metabolite levels in roots and shoots were strongly affected by light and nutrient availability. Highest concentrations of iridoid glycosides and verbascoside were found under high lig...Continue Reading

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Citations

Jul 14, 2017·Journal of Agricultural and Food Chemistry·Anne PoutaraudSylvain Plantureux
May 8, 2018·International Journal of Molecular Sciences·Kristian PetersNicole M van Dam
Jul 25, 2018·Ecology and Evolution·Natalie Iwanycki AhlstrandChristopher J Barnes

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Software Mentioned

lme4
R3
R package multcomp

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