Document Detail

Perception of gravity by plants.
MedLine Citation:
PMID:  11536957     Owner:  NASA     Status:  MEDLINE    
Physical principles can be used to predict some features about the gravity perception system in plants. The nature of the system has made it rather elusive, so this approach represents an additional source of information to help find it. For a gravitational stimulus to be detected, two masses must move relative to each other in a manner which causes a significant amount of work to be done on a receptor. Relative to cellular dimensions, the masses must be large, be dense and move noticeable distances. The main sources of noise are thermal motion and flexing of the plant tissue. Some new models for the function of amyloplasts as statoliths are presented.
T Björkman
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Advances in space research : the official journal of the Committee on Space Research (COSPAR)     Volume:  12     ISSN:  0273-1177     ISO Abbreviation:  Adv Space Res     Publication Date:  1992  
Date Detail:
Created Date:  1996-03-05     Completed Date:  1996-03-05     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9878935     Medline TA:  Adv Space Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  195-201     Citation Subset:  S    
Department of Botany, University of Washington, Seattle 98195, USA.
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MeSH Terms
Cell Size
Gravity Sensing / physiology*
Meristem / cytology,  physiology
Models, Biological*
Plant Physiological Phenomena*
Plants / cytology
Plastids / physiology

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