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Mild temperature stress modulates cytokinin content and cytokinin oxidase/dehydrogenase activity in young pea plants
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SYSNO ASEP 0338594 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Mild temperature stress modulates cytokinin content and cytokinin oxidase/dehydrogenase activity in young pea plants Překlad názvu Mírný teplotní stres ovlivňuje obsah cytokininů a aktivitu cytokinin oxidázy/dehydrogenázy v mladých rostlinách hrachu Tvůrce(i) Vaseva, I. (BG)
Todorova, D. (BG)
Malbeck, Jiří (UEB-Q) RID, ORCID
Trávníčková, Alena (UEB-Q) ORCID
Macháčková, Ivana (UEB-Q)Zdroj.dok. Acta Agronomica Hungarica - ISSN 0238-0161
Roč. 57, č. 1 (2009), s. 33-40Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. HU - Maďarsko Klíč. slova Cytokinin oxidase/dehydrogenase ; Cytokinins ; Pea Vědní obor RIV EF - Botanika CEZ AV0Z50380511 - UEB-Q (2005-2011) DOI 10.1556/AAgr.57.2009.1.4 Anotace Cytokinin oxidase/dehydrogenase (CKX: EC 1.5.99.12) is able to provide a means for the rapid turnover of its substrate and it has been considered responsible for changes in the cytokinin pool in an adverse environment. Mild temperature stresses (10°C and 33°C average) were applied to young pea plants of two varieties (cvs. Manuela and Scinado) in order to assess the response of the cytokinin pool and CKX activity to altered growth conditions. Both temperature treatments increased the isopentenyl adenine (iP) and isopentenyl adenine riboside (iPR) contents in stressed plants. This trend was far more pronounced in the leaves. Low temperature additionally resulted in elevated cis zeatin riboside ( cis ZR) and CKX activity. Heat did not influence the enzymatic activity in the leaves, while opposing trends were observed in the root-derived CKX activity of the two tested varieties. The data suggest that variance in the temperature provokes adaptive reactions in the cytokinin pool. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2010
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