Stark fluorescence spectroscopy reveals two emitting sites in the dissipative state of FCP antennas

M.D. Wahadoszamen; A. Ghazaryan; E.H. Cingil; A. Mane Ara; C. Buchel; R. van Grondelle; R. Berera

doi:10.1016/j.bbabio.2013.09.001

Stark fluorescence spectroscopy reveals two emitting sites in the dissipative state of FCP antennas

M.D. Wahadoszamen, A. Ghazaryan, E.H. Cingil, A. Mane Ara, C. Buchel, R. van Grondelle, R. Berera

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Abstract

Diatoms are characterized by very efficient photoprotective mechanisms where the excess energy is dissipated as heat in the main antenna system constituted by fucoxanthin-chlorophyll (Chl) protein complexes (FCPs). We performed Stark fluorescence spectroscopy on FCPs in their light-harvesting and energy dissipating states. Our results show that two distinct emitting bands are created upon induction of energy dissipation in FCPa and possibly in FCPb. More specifically one band is characterized by broad red shifted emission above 700 nm and bears strong similarity with a red shifted band that we detected in the dissipative state of the major light-harvesting complex II (LHCII) of plants [26]. We discuss the results in the light of different mechanisms proposed to be responsible for photosynthetic photoprotection. © 2013 Elsevier B.V.

Original language	English
Pages (from-to)	193-200
Journal	Biochimica et Biophysica Acta (BBA) - Bioenergetics
Volume	1837
DOIs	https://doi.org/10.1016/j.bbabio.2013.09.001
Publication status	Published - 2013

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10.1016/j.bbabio.2013.09.001

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title = "Stark fluorescence spectroscopy reveals two emitting sites in the dissipative state of FCP antennas",

abstract = "Diatoms are characterized by very efficient photoprotective mechanisms where the excess energy is dissipated as heat in the main antenna system constituted by fucoxanthin-chlorophyll (Chl) protein complexes (FCPs). We performed Stark fluorescence spectroscopy on FCPs in their light-harvesting and energy dissipating states. Our results show that two distinct emitting bands are created upon induction of energy dissipation in FCPa and possibly in FCPb. More specifically one band is characterized by broad red shifted emission above 700 nm and bears strong similarity with a red shifted band that we detected in the dissipative state of the major light-harvesting complex II (LHCII) of plants [26]. We discuss the results in the light of different mechanisms proposed to be responsible for photosynthetic photoprotection. {\textcopyright} 2013 Elsevier B.V.",

author = "M.D. Wahadoszamen and A. Ghazaryan and E.H. Cingil and {Mane Ara}, A. and C. Buchel and {van Grondelle}, R. and R. Berera",

year = "2013",

doi = "10.1016/j.bbabio.2013.09.001",

language = "English",

volume = "1837",

pages = "193--200",

journal = "Biochimica et Biophysica Acta (BBA) - Bioenergetics",

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TY - JOUR

T1 - Stark fluorescence spectroscopy reveals two emitting sites in the dissipative state of FCP antennas

AU - Wahadoszamen, M.D.

AU - Ghazaryan, A.

AU - Cingil, E.H.

AU - Mane Ara, A.

AU - Buchel, C.

AU - van Grondelle, R.

AU - Berera, R.

PY - 2013

Y1 - 2013

N2 - Diatoms are characterized by very efficient photoprotective mechanisms where the excess energy is dissipated as heat in the main antenna system constituted by fucoxanthin-chlorophyll (Chl) protein complexes (FCPs). We performed Stark fluorescence spectroscopy on FCPs in their light-harvesting and energy dissipating states. Our results show that two distinct emitting bands are created upon induction of energy dissipation in FCPa and possibly in FCPb. More specifically one band is characterized by broad red shifted emission above 700 nm and bears strong similarity with a red shifted band that we detected in the dissipative state of the major light-harvesting complex II (LHCII) of plants [26]. We discuss the results in the light of different mechanisms proposed to be responsible for photosynthetic photoprotection. © 2013 Elsevier B.V.

AB - Diatoms are characterized by very efficient photoprotective mechanisms where the excess energy is dissipated as heat in the main antenna system constituted by fucoxanthin-chlorophyll (Chl) protein complexes (FCPs). We performed Stark fluorescence spectroscopy on FCPs in their light-harvesting and energy dissipating states. Our results show that two distinct emitting bands are created upon induction of energy dissipation in FCPa and possibly in FCPb. More specifically one band is characterized by broad red shifted emission above 700 nm and bears strong similarity with a red shifted band that we detected in the dissipative state of the major light-harvesting complex II (LHCII) of plants [26]. We discuss the results in the light of different mechanisms proposed to be responsible for photosynthetic photoprotection. © 2013 Elsevier B.V.

U2 - 10.1016/j.bbabio.2013.09.001

DO - 10.1016/j.bbabio.2013.09.001

M3 - Article

SN - 0005-2728

VL - 1837

SP - 193

EP - 200

JO - Biochimica et Biophysica Acta (BBA) - Bioenergetics

JF - Biochimica et Biophysica Acta (BBA) - Bioenergetics

ER -

Stark fluorescence spectroscopy reveals two emitting sites in the dissipative state of FCP antennas

Abstract

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