title: Comparing plant and fungal gravitropism using imitational models based on reiterative computation.
abstract: Mathematical models which imitate plant gravitropic responses were used to compare plant and fungal gravitropism with kinetic data from the agarics Coprinus cinereus and Flammulina velutipes. Similarities were: bending depends on differential growth; growth of the organ is most intensive just behind the apex; gravitropisms exhibit a substantial time delay. Differences were: the agaric stem apex always returns to the vertical (some plant organs show stable plagiogravitropic growth); curvature compensation occurred in C. cinereus; C. cinereus stems rarely overshot or oscillated around the vertical although data for F. velutipes showed a single overshoot and oscillation. The work focused attention on the need for data on detection-level thresholds, angle-response and acceleration-response relationships in fungi, and the need for detailed observations of gravitropism kinetics in a larger number and wider range of fungi.
authors.affiliation: School of Biological Sciences, The University of Manchester, U.K.
authors.forename: D
authors.initials: D
authors.lastname: Moore
authors.forename: A
authors.initials: A
authors.lastname: Stockus
mesh_terms: D000363:Agaricales / Q000254:growth & development*; D003302:Coprinus / Q000254:growth & development*; D006112:Gravitation; D018522:Gravitropism / Q000502:physiology*; D008954:Models, Biological; D063245:Plant Development; D013997:Time Factors