Počet záznamů: 1
The Role of Cytokinins and Ethylene in Bean Cotyledon Senescence. The Effect of Free Radicals
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SYSNO ASEP 0104365 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název The Role of Cytokinins and Ethylene in Bean Cotyledon Senescence. The Effect of Free Radicals Překlad názvu Role cytokininů a ethylenu v senescenci děložních listů fazolu. Vliv volných radikálů Tvůrce(i) Wilhelmová, Naděžda (UEB-Q) RID, ORCID
Procházková, Dagmar (UEB-Q) RID
Macháčková, Ivana (UEB-Q)
Vágner, Martin (UEB-Q) RID, ORCID
Srbová, M. (CZ)
Wilhelm, J. (CZ)Zdroj.dok. Biologia Plantarum. - : Ústav experimentální botaniky AV ČR, v. v. i. - ISSN 0006-3134
Roč. 48, č. 4 (2004), s. 523-529Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova ageing epicotyl decapitation ; lipid peroxidation ; lipofuscin-like pigments Vědní obor RIV CE - Biochemie CEP GA522/03/0312 GA ČR - Grantová agentura ČR CEZ AV0Z5038910 - UEB-Q Anotace During ageing of bean (Phaseolus vulgaris L.) cotyledons in plants with modified life span the time-course of four cytokinins, ethylene, and the end products of free radical attack, lipofuscin-like pigments (LFP), were studied. UV irradiation shortened cotyledon life span, while epicotyl decapitation prolonged it. In controls, LFP increased at the senescence onset but at the end of life span it returned to the initial level. Ethylene increased more than 3-fold at the time of abscission. The content of individual cytokinins (zeatin, zeatin riboside, isopentenyl adenine, isopentenyl adenine riboside) varied differently during ageing but they did not decreased in any case under level observed in young cotyledons at the time of abscission. UV irradiation resulted in 14-fold increase in LFP concentration at the end. Ethylene increased 8-fold 2 h after irradiation. Individual cytokinins increased after UV irradiation to a different extent and time-course, nevertheless cotyledon life span was shortened. Decapitation induced LFP decrease. On day 13, LFP abruptly increased and than decreased and stayed lowered until abscission. Ethylene was maximum on day 24, at the time of abscission, it was above 200 % of control. Decapitation produced transient decrease in some cytokinins namely zeatin and isopentenyl adenine riboside. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2005
Počet záznamů: 1