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Plant Signal Behav. 2016 May 3;11(5):e1176818. doi: 10.1080/15592324.2016.1176818.

Allelochemicals of the phenoxazinone class act at physiologically relevant concentrations.

Author information

1
a Department of Internal Medicine I , Medical University Clinic, University of Tübingen , Tübingen , Germany.
2
b Department of Molecular Biology , Max Planck Institute for Developmental Biology , Tübingen , Germany.

Abstract

Plants compete with their neighbors via the release of chemical compounds into the rhizosphere. These phytotoxins originate from a series of secondary metabolites and can be processed further by soil-living microorganisms before exerting their activity on the target plant. To determine the molecular mode of action and the physiological relevance of potential phytotoxins, it is important to simulate true-to-life conditions in laboratory experiments, for example by applying physiologically relevant concentrations. Here, we report on an improved experimental setting to study the function of allelochemicals of the benzoxazolinone class. By adjusting the solvent and the application of the chemicals, we reduced by more than 2fold the concentration that is necessary to induce growth defects in the model plant Arabidopsis thaliana.

KEYWORDS:

Allelochemical; Arabidopsis thaliana; allelopathy; aminophenoxazinone; plant-plant interference

PMID:
27088968
PMCID:
PMC4973752
DOI:
10.1080/15592324.2016.1176818
[Indexed for MEDLINE]
Free PMC Article

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