| Growth-induced mass flows in fungal networks. | |
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MedLine Citation:
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PMID: 20538649 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Cord-forming fungi form extensive networks that continuously adapt to maintain an efficient transport system. As osmotically driven water uptake is often distal from the tips, and aqueous fluids are incompressible, we propose that growth induces mass flows across the mycelium, whether or not there are intrahyphal concentration gradients. We imaged the temporal evolution of networks formed by Phanerochaete velutina, and at each stage calculated the unique set of currents that account for the observed changes in cord volume, while minimizing the work required to overcome viscous drag. Predicted speeds were in reasonable agreement with experimental data, and the pressure gradients needed to produce these flows are small. Furthermore, cords that were predicted to carry fast-moving or large currents were significantly more likely to increase in size than cords with slow-moving or small currents. The incompressibility of the fluids within fungi means there is a rapid global response to local fluid movements. Hence velocity of fluid flow is a local signal that conveys quasi-global information about the role of a cord within the mycelium. We suggest that fluid incompressibility and the coupling of growth and mass flow are critical physical features that enable the development of efficient, adaptive biological transport networks. |
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Authors:
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Luke L M Heaton; Eduardo López; Philip K Maini; Mark D Fricker; Nick S Jones |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-06-10 |
Journal Detail:
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Title: Proceedings. Biological sciences / The Royal Society Volume: 277 ISSN: 1471-2954 ISO Abbreviation: Proc. Biol. Sci. Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-09-29 Completed Date: 2011-01-28 Revised Date: 2011-11-07 |
Medline Journal Info:
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Nlm Unique ID: 101245157 Medline TA: Proc Biol Sci Country: England |
Other Details:
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Languages: eng Pagination: 3265-74 Citation Subset: IM |
Affiliation:
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LSI DTC, Wolfson Building, University of Oxford, Parks Road, Oxford OX1 3QD, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Biological Transport Hydrodynamics Models, Biological* Mycelium / growth & development, metabolism, physiology Phanerochaete / growth & development*, metabolism, physiology Photography |
| Grant Support | |
ID/Acronym/Agency:
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//Biotechnology and Biological Sciences Research Council |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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