Physiological effects and transport of 24-epibrassinolide in heat-stressed barley

0368590 - ÚEB 2012 RIV PL eng J - Článek v odborném periodiku
Janeczko, A. - Oklešťková, Jana - Pociecha, E. - Koscielniak, J. - Mirek, M.
Physiological effects and transport of 24-epibrassinolide in heat-stressed barley.
Acta Physiologiae Plantarum. Roč. 33, č. 4 (2011), s. 1249-1259. ISSN 0137-5881. E-ISSN 1861-1664
Grant CEP: GA AV ČR IAA400550801; GA ČR GA301/08/1649
Výzkumný záměr: CEZ:AV0Z50380511
Klíčová slova: Brassinosteroid transport * Dark respiration * Hordeum vulgare L * PSII efficiency * Metabolic activity
Kód oboru RIV: EF - Botanika
Impakt faktor: 1.639, rok: 2011

This paper presents a study of the metabolic response (dark respiration intensity, photosystem II efficiency, metabolic activity) and the yield of barley treated with 24-epibrassinolide and subjected to high-temperature stress. Transport of exogenously applied 24-epibrassinolide in barley and changes in the profile of brassinosteroids that may occur in tissues after 24-epibrassinolide application were also studied. The water solution of 24-epibrassinolide (0.005 and 0.25 mg dm(-3)) was applied via infiltration of the first and second leaves of 12-day-old seedlings. Control plants were treated with water solution of hormone solvent (ethanol). Fifteen-day-old plants were subjected to high-temperature stress (42A degrees C for 3 h). The influence of hormone treatment and stress conditions was investigated in the first and second leaves based on measurements of PSII efficiency.
Trvalý link: http://hdl.handle.net/11104/0202889