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Blue radiation stimulates photosynthetic induction in Fagus sylvatica L

SYSNO ASEP	0338733
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Blue radiation stimulates photosynthetic induction in Fagus sylvatica L
Author(s)	Košvancová, Martina (UEK-B) Urban, Otmar (UEK-B)_{RID, ORCID, SAI} Navrátil, M. (CZ) Špunda, V. (CZ) Robson, T.M. (ES) Marek, Michal V. (UEK-B)_{RID, ORCID, SAI}
Number of authors	6
Source Title	Photosynthetica. - : Ústav experimentální botaniky AV ČR, v. v. i. - ISSN 0300-3604 Roč. 47, č. 3 (2009), s. 388-398
Number of pages	11 s.
Language	eng - English
Country	CZ - Czech Republic
Keywords	blue/red ratio ; electron transport ; non-photochemical quenching ; radiation duality ; Rubisco activation ; Transient limitations of photosynthesis.
Subject RIV	ED - Physiology
R&D Projects	IAA600870701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	OC08022 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	GA522/07/0759 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z60870520 - UEK-B (2005-2011)
UT WOS	000271672900010
Annotation	This study was designed to test the hypothesis that the spectral composition of incident radiation can affect photosynthetic induction, since B photons (B; λmax = 455 nm) stimulate stomatal opening and are more effectively absorbed by leaves than R photons (R; λmax = 625 nm). Different stages of photosynthetic induction, primarily determined by the photo-modulation of Rubisco activity and stomata opening, were investigated in dark-adapted leaves of Fagus sylvatica transferred to saturating irradiance [800μmol(photon) m–2 s–1] at B/R ratios of 1/3, 1/1, or 3/1. Photosynthesis was induced faster by irradiance with a high B/R ratio (3/1). However, there were no differences in induction between leaves receiving equal (1/1) and low (1/3) B/R ratios. Electron transport was highly sensitive to radiation quality, exhibiting faster induction kinetics with increasing B/R ratio. In contrast, the kinetics of stomatal opening was independent of the spectral composition of incoming radiation.
Workplace	Global Change Research Institute
Contact	Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268
Year of Publishing	2010

Number of the records: 1