Drought- and ABA-induced changes in polypeptide and mRNA accumulation in tomato leaves

Drought stress triggers abscisic acid (ABA) biosynthesis resulting in ABA accumulation. The ABA-deficient tomato mutant, flacca (Lycopersicon esculentum Mill. cv Ailsa Craig), does not synthesize ABA in response to drought stress. This mutant has been used to distinguish polypeptides and in vitro tr...

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Bibliographic Details
Published in:Plant physiology (Bethesda) 1988-12, Vol.88 (4), p.1210-1214
Main Author: Bray, E.A
Format: Article
Language:English
Subjects:
ABA
ACIDE ABSCISSIQUE
ACIDO ABSCISICO
ARN MENSAJERO
ARN MESSAGER
Biological and medical sciences
Dehydration
DROUGHT
Electrophoresis
FEUILLE
Fundamental and applied biological sciences. Psychology
Gels
Gene expression regulation
HOJAS
LEAVES
LYCOPERSICON ESCULENTUM
MESSENGER RNA
Metabolism
Metabolism. Physicochemical requirements
PEPTIDE
PEPTIDES
PEPTIDOS
Plant physiology and development
Plants
PROTEIN SYNTHESIS
RNA
SECHERESSE
SEQUIA
SINTESIS DE PROTEINAS
STRESS
SYNTHESE PROTEIQUE
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Summary:Drought stress triggers abscisic acid (ABA) biosynthesis resulting in ABA accumulation. The ABA-deficient tomato mutant, flacca (Lycopersicon esculentum Mill. cv Ailsa Craig), does not synthesize ABA in response to drought stress. This mutant has been used to distinguish polypeptides and in vitro translation products that are synthesized during drought stress in response to elevated ABA levels from those that are induced directly by altered water relations. A set of polypeptides and in vitro translation products was synthesized during drought stress in the wild type. These polypeptides and in vitro translation products were synthesized to a lesser extent in the drought-stressed ABA-deficient mutant. Treatment of flacca with ABA resulted in the synthesis of the drought-stress-induced polypeptides and in vitro translation products. These results support the hypothesis that many of the polypeptides that are synthesized during drought are regulated by alterations in ABA concentration. Similarly, the mRNA population was altered by ABA during drought stress.
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.88.4.1210