Citation
Matus Bloch, Ivan J. (1988) Models for the Avoidance Response in Phycomyces. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/c5e3-v765. https://resolver.caltech.edu/CaltechTHESIS:02222013-111607349
Abstract
The sporangiophore of the fungus Phycomyces is able to avoid obstacles placed a few millimeters from its growing zone. The work described in this thesis presents evidence that the avoidance response is mediated by gases. Avoidance occurs in still air in the diffusion limit, even at relative humidities close to 100%. It is shown that the effect of the surfaces of the obstacles cannot only be to reflect these gases: the surfaces must play a more active role. Models in which the surfaces adsorb growth-inhibitors or adsorb an inert precursor that is re-emitted as a growth-promoter that decays are in agreement with our experimental observations.
| Item Type: | Thesis (Dissertation (Ph.D.)) | ||||||
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| Subject Keywords: | Physics | ||||||
| Degree Grantor: | California Institute of Technology | ||||||
| Division: | Physics, Mathematics and Astronomy | ||||||
| Major Option: | Physics | ||||||
| Thesis Availability: | Public (worldwide access) | ||||||
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| Defense Date: | 4 March 1987 | ||||||
| Additional Information: | Name in thesis file (PDF) -- Ivan J. Matus -- differs from name in 1988 commencement program. | ||||||
| Record Number: | CaltechTHESIS:02222013-111607349 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechTHESIS:02222013-111607349 | ||||||
| DOI: | 10.7907/c5e3-v765 | ||||||
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| Default Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 7493 | ||||||
| Collection: | CaltechTHESIS | ||||||
| Deposited By: | Benjamin Perez | ||||||
| Deposited On: | 22 Feb 2013 19:28 | ||||||
| Last Modified: | 03 Nov 2021 22:23 |
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