Negative feedback regulation is responsible for the non-linear modulation of photosynthetic activity in plants and cyanobacteria exposed to a dynamic light environment

Name: Negative feedback regulation is responsible for the non-linear modulation of photosynthetic activity in plants and cyanobacteria exposed to a dynamic light environment
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Nedbal, Ladislav; Březina, Vítězslav; Adamec, František; Štys, Dalibor; Oja, V.; Laisk, A.; Govindjee, A.

Počet záznamů: 1

Negative feedback regulation is responsible for the non-linear modulation of photosynthetic activity in plants and cyanobacteria exposed to a dynamic light environment

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SYSNO ASEP	0170746
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Ostatní články
Název	Negative feedback regulation is responsible for the non-linear modulation of photosynthetic activity in plants and cyanobacteria exposed to a dynamic light environment
Tvůrce(i)	Nedbal, Ladislav (UEK-B) Březina, Vítězslav (UEK-B) Adamec, František (UEK-B) Štys, Dalibor (UEK-B) Oja, V. (XX) Laisk, A. (XX) Govindjee, A. (XX)
Zdroj.dok.	Biochimica Et Biophysica Acta-Bioenergetics. - : Elsevier - ISSN 0005-2728 Roč. 1607, č. 1607 (2003), s. 5-17
Poč.str.	13 s.
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	Calvin-Benson Cycle ; Forced oscilation ; Intermittent light
Vědní obor RIV	EI - Biotechnologie a bionika
CEP	LN00A141 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
CEZ	MSM 123100001
	AV0Z6087904 - UEK-B
Anotace	Photosynthetic organisms exposed to a dynamic light environment exhibit complex transients of photosynthetic activities that are strongly dependent on the temporal pattern of the incident irradiance. In a harmonically modulated light of intensity I approximate to const. + sin(omegat), chlorophyll fluorescence response consists of a steady-state component, a component modulated with the angular frequency of the irradiance omega and several upper harmonic components (2omega, 3omega and higher). Our earlier reverse engineering analysis suggests that the non-linear response can be caused by a negative feedback regulation of photosynthesis. Here, we present experimental evidence that the negative feedback regulation of the energetic coupling between phycobilisome and Photosystem II (PSII) in the cyanobacterium, Synechocystis sp. PCC6803 indeed results in the appearance of upper harmonic modes in the chlorophyll fluorescence emission.
Pracoviště	Ústav výzkumu globální změny
Kontakt	Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268
Rok sběru	2004

Počet záznamů: 1