Local induction of senescence by darkness in Cucurbita pepo (zucchini) cotyledons or the primary leaf induces opposite effects in the adjacent illuminated organ

Ananieva, K.; Ananiev, E. D.; Doncheva, S.; Stefanov, D.; Mishev, K.; Kamínek, Miroslav; Motyka, Václav; Dobrev, Petre; Malbeck, Jiří

doi:https://dx.doi.org/10.1007/s10725-011-9616-8

Number of the records: 1

Local induction of senescence by darkness in Cucurbita pepo (zucchini) cotyledons or the primary leaf induces opposite effects in the adjacent illuminated organ

1.

SYSNO ASEP	0368552
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Local induction of senescence by darkness in Cucurbita pepo (zucchini) cotyledons or the primary leaf induces opposite effects in the adjacent illuminated organ
Author(s)	Ananieva, K. (BG) Ananiev, E. D. (BG) Doncheva, S. (BG) Stefanov, D. (BG) Mishev, K. (BG) Kamínek, Miroslav (UEB-Q)_{RID, ORCID} Motyka, Václav (UEB-Q)_{RID, ORCID} Dobrev, Petre (UEB-Q)_{RID, ORCID} Malbeck, Jiří (UEB-Q)_{RID, ORCID}
Source Title	Plant Growth Regulation. - : Springer - ISSN 0167-6903 Roč. 65, č. 3 (2011), s. 459-471
Number of pages	13 s.
Language	eng - English
Country	NL - Netherlands
Keywords	Abscisic acid ; Cotyledons ; Cytokinins
Subject RIV	EF - Botanics
R&D Projects	IAA600380701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	IAA600380805 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	LC06034 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	1M06030 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z50380511 - UEB-Q (2005-2011)
UT WOS	000297621200004
DOI	10.1007/s10725-011-9616-8
Annotation	Local darkening of zucchini cotyledons or the adjacent leaf affected in an organ-specific manner the adjacent ones which remained under the initial light regime. Darkening of the pair of cotyledons induced a reduction of total cytokinin (CK) levels and increase CK oxidase/dehydrogenase (CKX) activity in the adjacent illuminated primary leaf. Content of abscisic acid (ABA) was increased which correlated with reduced stomatal aperture. In contrast, darkening of adjacent primary leaf led to the increase in total CK levels in parallel with decreased CKX activity, decrease of ABA content in correlation with increased stomatal aperture. Three photosynthesis-related genes psbA, psaB and rbcL remained almost unaffected in both illuminated organs. Results indicate involvement of CKX and ABA signaling in the control of communication mechanisms between cotyledons and the primary leaf which could operate in response to changing environmental factors.
Workplace	Institute of Experimental Botany
Contact	David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469
Year of Publishing	2012

Number of the records: 1