Photosynthesis in dynamic light: systems biology of
unconventional chlorophyll fluorescence transients in
Synechocystis sp PCC 6803

J 2005

Photosynthesis in dynamic light: systems biology of unconventional chlorophyll fluorescence transients in Synechocystis sp PCC 6803

NEDBAL, Ladislav; V BREZINA; Jan ČERVENÝ a Milan TRTÍLEK

Základní údaje

Originální název

Photosynthesis in dynamic light: systems biology of unconventional chlorophyll fluorescence transients in Synechocystis sp PCC 6803

Autoři

NEDBAL, Ladislav; V BREZINA; Jan ČERVENÝ a Milan TRTÍLEK

Vydání

PHOTOSYNTHESIS RESEARCH, DORDRECHT, SPRINGER, 2005, 0166-8595

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 2.295

Označené pro přenos do RIV

DOI

https://doi.org/10.1007/s11120-004-6428-y

UT WoS

000230845200016

Klíčová slova anglicky

fluorescence; forced oscillations; non-linearity; system biology; system identification

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 28. 11. 2014 14:07, Ing. Jan Červený, Ph.D.

Anotace

V originále

Photosynthetic organisms live in a dynamic environment where light typically fluctuates around a mean level that is slowly drifting during the solar day. We show that the far-from-equilibrium photosynthesis occurring in a rapidly fluctuating light differs vastly from the stationary-flux photosynthesis attained in a constant or slowly drifting light. Photosynthetic organisms in a static or slowly drifting light can be characterized by a steady-state quantum yield of chlorophyll fluorescence emission F' that is changing linearly with small and slow variations of the incident irradiance I+Delta I(t): F'(I+Delta I(t)) approximate to F-mean'(dF)/(dI) center dot Delta I(t). In Synechocystis sp. PCC 6803, the linear approximation holds for an extended interval covering largely the static irradiance range experienced by the cyanobacteria in nature. The photosynthetic dynamism and, consequently, the dynamism of the chlorophyll fluorescence emission change dramatically when exposing the organism to a fluctuating irradiance. Harmonically-modulated irradiance I + Delta I center dot sin(2 pi t/T), T approximate to 1-25 s induces perpetual, far-from-equilibrium forced oscillations that are strongly non-linear, exhibiting significant hysteresis with multiple fluorescence levels corresponding to a single instantaneous level of the incident irradiance. We propose that, in nature, the far-from-equilibrium dynamic phenomena represent a significant correction to the steady-state photosynthetic activity that is typically investigated in laboratory. Analysis of the forced oscillations by the tools of systems biology suggests that the dynamism of photosynthesis observed in fluctuating light can be explained by a delayed action of regulatory agents.

Citovat

NEDBAL, Ladislav; V BREZINA; Jan ČERVENÝ a Milan TRTÍLEK. Photosynthesis in dynamic light: systems biology of unconventional chlorophyll fluorescence transients in Synechocystis sp PCC 6803. PHOTOSYNTHESIS RESEARCH. DORDRECHT: SPRINGER, 2005, roč. 84, 1-3, s. 99-106. ISSN 0166-8595. Dostupné z: https://doi.org/10.1007/s11120-004-6428-y.

@article{1210758,
   author = {Nedbal, Ladislav and Brezina, V and Červený, Jan and Trtílek, Milan},
   article_location = {DORDRECHT},
   article_number = {1-3},
   doi = {https://doi.org/10.1007/s11120-004-6428-y},
   keywords = {fluorescence; forced oscillations; non-linearity; system biology; system identification},
   language = {eng},
   issn = {0166-8595},
   journal = {PHOTOSYNTHESIS RESEARCH},
   title = {Photosynthesis in dynamic light: systems biology of unconventional chlorophyll fluorescence transients in Synechocystis sp PCC 6803},
   volume = {84},
   year = {2005}
}

TY  - JOUR
ID  - 1210758
AU  - Nedbal, Ladislav - Brezina, V - Červený, Jan - Trtílek, Milan
PY  - 2005
TI  - Photosynthesis in dynamic light: systems biology of unconventional chlorophyll fluorescence transients in Synechocystis sp PCC 6803
JF  - PHOTOSYNTHESIS RESEARCH
VL  - 84
IS  - 1-3
SP  - 99-106
EP  - 99-106
PB  - SPRINGER
SN  - 01668595
KW  - fluorescence
KW  - forced oscillations
KW  - non-linearity
KW  - system biology
KW  - system identification
N2  - Photosynthetic organisms live in a dynamic environment where light typically fluctuates around a mean level that is slowly drifting during the solar day. We show that the far-from-equilibrium photosynthesis occurring in a rapidly fluctuating light differs vastly from the stationary-flux photosynthesis attained in a constant or slowly drifting light. Photosynthetic organisms in a static or slowly drifting light can be characterized by a steady-state quantum yield of chlorophyll fluorescence emission F' that is changing linearly with small and slow variations of the incident irradiance I+Delta I(t): F'(I+Delta I(t)) approximate to F-mean'(dF)/(dI) center dot Delta I(t). In Synechocystis sp. PCC 6803, the linear approximation holds for an extended interval covering largely the static irradiance range experienced by the cyanobacteria in nature. The photosynthetic dynamism and, consequently, the dynamism of the chlorophyll fluorescence emission change dramatically when exposing the organism to a fluctuating irradiance. Harmonically-modulated irradiance I + Delta I center dot sin(2 pi t/T), T approximate to 1-25 s induces perpetual, far-from-equilibrium forced oscillations that are strongly non-linear, exhibiting significant hysteresis with multiple fluorescence levels corresponding to a single instantaneous level of the incident irradiance. We propose that, in nature, the far-from-equilibrium dynamic phenomena represent a significant correction to the steady-state photosynthetic activity that is typically investigated in laboratory. Analysis of the forced oscillations by the tools of systems biology suggests that the dynamism of photosynthesis observed in fluctuating light can be explained by a delayed action of regulatory agents.
ER  -

NEDBAL, Ladislav; V BREZINA; Jan ČERVENÝ a Milan TRTÍLEK. Photosynthesis in dynamic light: systems biology of unconventional chlorophyll fluorescence transients in Synechocystis sp PCC 6803. \textit{PHOTOSYNTHESIS RESEARCH}. DORDRECHT: SPRINGER, 2005, roč.~84, 1-3, s.~99-106. ISSN~0166-8595. Dostupné z: https://doi.org/10.1007/s11120-004-6428-y.

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