Flacca, tomato mutant in which the last step of ABA biosynthesis is blocked, displays changes both in polyamine content (especially the ratio between free and conjugated forms) and in ornithine-, arginine- and S- adenosylmethionine decarboxylase activities. Arginine decarboxylase activity is higher compared to that of ornithine decarboxylase especially in older plants (seven intemode stage), being on line with its regulatory role. However this activity is not sufficient to justify the polyamine content, in particular of conjugated forms (disappearance of TCA-insoluble conjugates and dramatic decrease of TCA-soluble ones). These results are in favour of a multifunctional competition of many responses to hormone action. © 1997 Taylor & Francis Group, LLC.
Bagni N., Bongiovanni B., Franceschetti M., Tassoni A. (1997). Abscisic acid mutants affect polyamine metabolism. PLANT BIOSYSTEMS, 131(3), 18-187 [10.1080/11263504.1997.10654180].
Abscisic acid mutants affect polyamine metabolism
Bagni N.
Primo
Supervision
;Tassoni A.Ultimo
Writing – Review & Editing
1997
Abstract
Flacca, tomato mutant in which the last step of ABA biosynthesis is blocked, displays changes both in polyamine content (especially the ratio between free and conjugated forms) and in ornithine-, arginine- and S- adenosylmethionine decarboxylase activities. Arginine decarboxylase activity is higher compared to that of ornithine decarboxylase especially in older plants (seven intemode stage), being on line with its regulatory role. However this activity is not sufficient to justify the polyamine content, in particular of conjugated forms (disappearance of TCA-insoluble conjugates and dramatic decrease of TCA-soluble ones). These results are in favour of a multifunctional competition of many responses to hormone action. © 1997 Taylor & Francis Group, LLC.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
