Document Detail

The use of mutants to probe models of gravitropism.
MedLine Citation:
PMID:  10944145     Owner:  NLM     Status:  MEDLINE    
It has been widely believed for more than 70 years that auxin plays a central role in the induction of differential growth which causes gravitropic curvature. However, this long-standing consensus about a role for auxin in gravitropism has only been achieved by allowing several mutually exclusive models to coexist. Furthermore, because there is no detailed model which is unchallenged by evidence, consensus is now centred on ill-defined models which have a low predictive value, hence are harder to challenge experimentally. An increasing number of mutants with abnormal gravitropic behaviour are becoming available. Such mutants should be very helpful in challenging existing models of gravitropism and in providing new evidence on which to build improved, more precise models. However, to date, most studies of mutants with abnormal gravitropism have been guided, experimentally and conceptually, by the old inadequate and vague models. Consequently, the full potential of modern molecular analysis in aiding our understanding of gravitropism has yet to be realized.
R D Firn; C Wagstaff; J Digby
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Journal of experimental botany     Volume:  51     ISSN:  0022-0957     ISO Abbreviation:  J. Exp. Bot.     Publication Date:  2000 Aug 
Date Detail:
Created Date:  2000-09-20     Completed Date:  2000-09-20     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9882906     Medline TA:  J Exp Bot     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1323-40     Citation Subset:  IM; S    
Department of Biology, University of York, York YO10 5YW, UK.
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MeSH Terms
Gravitropism / genetics*
Models, Biological*

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