[Effect of cytokinin preparations on the pools of pigments and proteins of wheat cultivars differing in their tolerance to water stress].

Abstract

Contents of chlorophylls, carotenoids, soluble leaf proteins, and the key enzyme of carbon metabolism--ribulose bisphosphate carboxylase/oxygenase (RuBisCO; EC 4.1.1.39)--in young seedlings and adult leaves of the wheat Triticum aestivum L. cultivars Mironovskaya 808 and Lyutestsens 758, contrasting in their water stress tolerances, were compared under conditions of normal available water supply, water deficiency, and subsequent rehydration. It was discovered that compounds displaying a cytokinin activity (6-benzylaminopurine, thidiazuron, cartolin-2, and cartolin-4) reduced the decreases in contents of chlorophylls, carotenoids, soluble leaf proteins, and RuBisCO progressing with development of water stress. These compounds with cytokinin activity also accelerated restoration of the compounds studied to their initial concentrations during rehydration. The cartolin preparations caused a maximal protective effect. Water stress had a more pronounced negative effect on cultivar Lyutestsens 758. Dehydration resulted in a more extensive destruction of seedlings compared to leaves of adult plants.

• Authors: I I Cherniad'ev, O F Monakhova
• Journal: Prikladnaia biokhimiia i mikrobiologiia (Prikl Biokhim Mikrobiol) 2003 Sep-Oct Vol. 39 Issue 5 Pg. 593-601 ISSN: 0555-1099 [Print] Russia (Federation)
• Vernacular Title: Vliianie tsitokininovykh preparatov na pul pigmentov i belkov sortov pshenitsy, razlichaiushchikhsia po ustoĭchivosti k vodnomu stressu.
• PMID: 14593876 (Publication Type: Comparative Study, Journal Article)

Chemical References

• Benzyl Compounds
• Carbamates
• Cytokinins
• Phenylurea Compounds
• Plant Proteins
• Purines
• Thiadiazoles
• o-isopropyl N-2-hydroxyethyl carbamate
• thidiazuron
• Water
• kartolin 2
• Chlorophyll
• Carotenoids
• Ribulose-Bisphosphate Carboxylase
• Adenine
• benzylaminopurine
• Kinetin

Topics

• Adenine (analogs & derivatives, pharmacology)
• Benzyl Compounds
• Carbamates (pharmacology)
• Carotenoids (metabolism)
• Chlorophyll (metabolism)
• Cytokinins (pharmacology)
• Kinetin
• Phenylurea Compounds (pharmacology)
• Plant Leaves (drug effects, physiology)
• Plant Proteins (metabolism)
• Purines
• Ribulose-Bisphosphate Carboxylase (metabolism)
• Seedlings (drug effects, physiology)
• Thiadiazoles
• Triticum (drug effects, physiology)
• Water (physiology)