Root exudate composition of grass and forb species in natural grasslands.

Abstract:

:Plants exude a diverse cocktail of metabolites into the soil as response to exogenous and endogenous factors. So far, root exudates have mainly been studied under artificial conditions due to methodological difficulties. In this study, each five perennial grass and forb species were investigated for polar and semi-polar metabolites in exudates under field conditions. Metabolite collection and untargeted profiling approaches combined with a novel classification method allowed the designation of 182 metabolites. The composition of exuded polar metabolites depended mainly on the local environment, especially soil conditions, whereas the pattern of semi-polar metabolites was primarily affected by the species identity. The profiles of both polar and semi-polar metabolites differed between growth forms, with grass species being generally more similar to each other and more responsive to the abiotic environment than forb species. This study demonstrated the feasibility of investigating exudates under field conditions and to identify the driving factors of exudate composition.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Dietz S,Herz K,Gorzolka K,Jandt U,Bruelheide H,Scheel D

doi

10.1038/s41598-019-54309-5

subject

Has Abstract

pub_date

2020-07-01 00:00:00

pages

10691

issue

1

issn

2045-2322

pii

10.1038/s41598-019-54309-5

journal_volume

10

pub_type

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