Document Detail


Stress effects on hormonal growth factors in tobacco tissues indicated by special changes in the isoelectric peroxidase patterns.
MedLine Citation:
PMID:  1459114     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The isoelectric peroxidase patterns of tobacco tissue cultures allow us to draw inferences to cell elongation and cell division because certain zones in acid pH ranges respond to the influence of auxines and gibberellins (promoting cell elongation) and others respond to the influence of cytokinins (promoting cell division). Stress, due to the absence of phosphate and presence of lead in the medium, causes characteristic changes in the intensity of these sensitive zones in peroxidase patterns. It may be deduced that the increase and decrease of these zones correspond to stimulation and inhibition of cell elongation and cell division, respectively. Cell elongation remains almost unaltered by lack of phosphate but is markedly inhibited by lead, while cell division is enhanced. However, stress brings about a reduction of dry weight. Reactions to stress can be observed earlier in patterns of peroxidase than in growth.
Authors:
W Rücker; R Maier
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Electrophoresis     Volume:  13     ISSN:  0173-0835     ISO Abbreviation:  Electrophoresis     Publication Date:    1992 Sep-Oct
Date Detail:
Created Date:  1993-01-08     Completed Date:  1993-01-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8204476     Medline TA:  Electrophoresis     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  798-9     Citation Subset:  IM    
Affiliation:
Institute of Plant Phsiology, University of Vienna, Austria.
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MeSH Terms
Descriptor/Qualifier:
Cell Division
Isoelectric Focusing
Lead / toxicity
Peroxidases / isolation & purification*
Phosphates / pharmacology
Plant Growth Regulators / metabolism
Plants / drug effects,  growth & development,  metabolism*
Plants, Toxic
Tobacco
Chemical
Reg. No./Substance:
0/Phosphates; 0/Plant Growth Regulators; 7439-92-1/Lead; EC 1.11.1.-/Peroxidases

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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