Počet záznamů: 1

Dynamic changes of canopy-scale mesophyll conductance to CO(2) diffusion of sunflower as affected by CO(2) concentration and abscisic acid

SYSNO ASEP	0367247
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Dynamic changes of canopy-scale mesophyll conductance to CO(2) diffusion of sunflower as affected by CO(2) concentration and abscisic acid
Tvůrce(i)	Schaufele, R. (DE) Šantrůček, Jiří (BC-A)_RID Schnyder, H. (DE)
Celkový počet autorů	3
Zdroj.dok.	Plant Cell and Environment. - : Wiley - ISSN 0140-7791 Roč. 34, č. 1 (2011), s. 127-136
Poč.str.	10 s.
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	carbon isotope discrimination ; water-stress ; in-vivo
Vědní obor RIV	EF - Botanika
CEP	GA206/08/0787 GA ČR - Grantová agentura ČR
CEZ	AV0Z50510513 - UMBR-M, BC-A (2005-2011)
UT WOS	000285065600010
DOI	10.1111/j.1365-3040.2010.02230.x
Anotace	Leaf-level measurements have shown that mesophyll conductance (g(m)) can vary rapidly in response to CO(2) and other environmental factors, but similar studies at the canopy-scale are missing. Here, we report the effect of short-term variation of CO(2) concentration on canopy-scale g(m) and other CO(2) exchange parameters of sunflower (Helianthus annuus L.) stands in the presence and absence of abscisic acid (ABA) in their nutrient solution. g(m) was estimated from gas exchange and on-line carbon isotope discrimination (Delta(obs)) in a 13CO(2)/12CO(2) gas exchange mesocosm. The isotopic contribution of (photo)respiration to stand-scale Delta(obs) was determined with the experimental approach of Tcherkez et al. Without ABA, short-term exposures to different CO(2) concentrations (C(a) 100 to 900 mu mol mol-1) had little effect on canopy-scale g(m).
Pracoviště	Biologické centrum (od r. 2006)
Kontakt	Dana Hypšová, eje@eje.cz, Tel.: 387 775 214
Rok sběru	2012

Počet záznamů: 1