Conditions for the emergence of circumnutations in plant roots.

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ID: 276602
2021
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Abstract
The plant root system shows remarkably complex behaviors driven by environmental cues and internal dynamics, whose interplay remains largely unknown. A notable example is circumnutation growth movements, which are growth oscillations from side to side of the root apex. Here we describe a model capable of replicating root growth behaviors, which we used to analyze the role of circumnuntations, revealing their emergence I) under gravitropic stress, as a combination of signal propagation and sensitivity to the signal carriers; II) as a result of the interplay between gravitropic and thigmotropic responses; and III) as a behavioral strategy to detect and react to resource gradients. The latter function requires the presence of a hypothetical internal oscillator whose parameters are regulated by the perception of environmental resources.
Reference Key
loshchilov2021conditionsplos Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Loshchilov, Ilya;Del Dottore, Emanuela;Mazzolai, Barbara;Floreano, Dario;
Journal PloS one
Year 2021
DOI
e0252202
URL
Keywords
ethylene reactive oxygen species (ros) auxin obstacle avoidance ca2+ signalling gravitropism and thigmotropism mechanical impedance root growth

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