Complex phytohormone responses during the cold acclimation of two wheat cultivars differing in cold tolerance, winter Samanta and spring Sandra

Kosová, K.; Prášil, I.T.; Vítámvás, P.; Dobrev, Petre; Motyka, Václav; Floková, Kristýna; Novák, Ondřej; Turečková, Veronika; Rolčík, Jakub; Pešek, Bedřich; Trávníčková, Alena; Gaudinová, Alena; Galiba, G.; Janda, T.; Vlasáková, E.; Prášilová, P.; Vaňková, Radomíra

doi:https://dx.doi.org/10.1016/j.jplph.2011.12.013

Počet záznamů: 1

Complex phytohormone responses during the cold acclimation of two wheat cultivars differing in cold tolerance, winter Samanta and spring Sandra

1.

SYSNO ASEP	0380692
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Complex phytohormone responses during the cold acclimation of two wheat cultivars differing in cold tolerance, winter Samanta and spring Sandra
Tvůrce(i)	Kosová, K. (CZ) Prášil, I.T. (CZ) Vítámvás, P. (CZ) Dobrev, Petre (UEB-Q)_{RID, ORCID} Motyka, Václav (UEB-Q)_{RID, ORCID} Floková, Kristýna (UEB-Q)_{ORCID, RID} Novák, Ondřej (UEB-Q)_{RID, ORCID, SAI} Turečková, Veronika (UEB-Q)_{RID, ORCID} Rolčík, Jakub (UEB-Q) Pešek, Bedřich (UEB-Q)_RID Trávníčková, Alena (UEB-Q)_ORCID Gaudinová, Alena (UEB-Q)_ORCID Galiba, G. (HU) Janda, T. (HU) Vlasáková, E. (CZ) Prášilová, P. (CZ) Vaňková, Radomíra (UEB-Q)_{RID, ORCID}
Zdroj.dok.	Journal of Plant Physiology. - : Elsevier - ISSN 0176-1617 Roč. 169, č. 6 (2012), s. 567-576
Poč.str.	10 s.
Jazyk dok.	eng - angličtina
Země vyd.	PT - Portugalsko
Klíč. slova	Cold stress ; Dehydrin ; Frost tolerance
Vědní obor RIV	ED - Fyziologie
CEP	GA522/09/2058 GA ČR - Grantová agentura ČR
	MEB040713 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
	MEB040924 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
CEZ	AV0Z50380511 - UEB-Q (2005-2011)
UT WOS	000302892800003
DOI	10.1016/j.jplph.2011.12.013
Anotace	Hormonal changes accompanying the cold stress (4 ◦C) response that are related to the level of frost tolerance (FT; measured as LT50) and the content of the most abundant dehydrin, WCS120, were compared in the leaves and crowns of the winter wheat (Triticum aestivum L.) cv. Samanta and the spring wheat cv. Sandra. The characteristic feature of the alarm phase (1 day) response was a rapid elevation of abscisic acid (ABA) and an increase of protective proteins (dehydrin WCS120). This response was faster and stronger in winter wheat, where it coincided with the downregulation of bioactive cytokinins and auxin as well as enhanced deactivation of gibberellins, indicating rapid suppression of growth. Next, the ethylene precursor aminocyclopropane carboxylic acid was quickly upregulated. After 3–7 days of cold exposure, plant adaptation to the low temperature was correlated with a decrease in ABA and elevation of growth-promoting hormones (cytokinins, auxin and gibberellins). The content of other stress hormones, i.e., salicylic acid and jasmonic acid, also began to increase. After prolonged cold exposure (21 days), a resistance phase occurred. The winter cultivar exhibited substantially enhanced FT, which was associated with a decline in bioactive cytokinins and auxin. The inability of the spring cultivar to further increase its FT was correlated with maintenance of a relatively higher cytokinin and auxin content, which was achieved during the acclimation period.
Pracoviště	Ústav experimentální botaniky
Kontakt	David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469
Rok sběru	2013

Počet záznamů: 1