ISSN:
1432-2048
Keywords:
Abscisic acid (cellular distribution)
;
Cell culture (ABA metabolism)
;
Lycopersicon (ABA metabolism)
;
Vacuole
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The biotransformation of abscisic acid (ABA) was studied in cell suspension cultures of Lycopersicon esculentum. The ABA was converted by the cells to phaseic acid, nigellic acid, dihydrophaseic acid, abscisic acid-β-D-glucopyranosyl ester (ABA-Glc) and other ABA and phaseic acid conjugates. Investigation of their cellular distribution showed that the conjugated forms were located only in the vacuoles whereas ABA and its acidic metabolites were found mainly in the extravacuolar fractions. Our results, together with a number of studies on the increase of ABA-Glc as a response to stress, allow us to propose that ABA-Glc is irreversibly compartmented in the vacuoles of plant cells.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00392276
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