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Mise en Évidence d'un Effet Régulateur de la Proline Exogène sur le Cycle du Glycolate Chez Nicotiana tabacum cv. Xanthi
Author(s) -
VALLEE J. C.,
VANSUYT G.,
PREVOST J.
Publication year - 1977
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1977.tb04071.x
Subject(s) - nicotiana tabacum , proline , biology , glycine , solanaceae , microbiology and biotechnology , biochemistry , amino acid , gene
Demonstration of a regulatory effect of exogenous proline on the glycolate cycle in Nicotiana tabacum cv. Xanthi n.c. An exogenous proline supply in the light provokes an increase in free glycine concentration in apical tissues or leaf disks of vegetative Nicotiana tabacum cv. Xanthi n.c. The same phenomenon does not occur in the equivalent tissues of tobacco plants after floral induction, these being naturally rich in proline. Under different environmental conditions (light, dark, varying concentrations of CO 2 and O 2 ), the exogenous proline appears to modify one or more reactions of the glycolate pathway.