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@ARTICLE{Keller:856917,
author = {Keller, Beat and Vass, Imre and Matsubara, Shizue and Paul,
Kenny and Jedmowski, Christoph and Pieruschka, Roland and
Nedbal, Ladislav and Rascher, Uwe and Muller, Onno},
title = {{M}aximum fluorescence and electron transport kinetics
determined by light-induced fluorescence transients ({LIFT})
for photosynthesis phenotyping},
journal = {Photosynthesis research},
volume = {140},
number = {2},
issn = {0166-8595},
address = {Dordrecht [u.a.]},
publisher = {Springer Science + Business Media B.V},
reportid = {FZJ-2018-06244},
pages = {221-233},
year = {2019},
abstract = {Photosynthetic phenotyping requires quick characterization
of dynamic traits when measuring large plant numbers in a
fluctuating environment. Here, we evaluated the
light-induced fluorescence transient (LIFT) method for its
capacity to yield rapidly fluorometric parameters from 0.6 m
distance. The close approximation of LIFT to conventional
chlorophyll fluorescence (ChlF) parameters is shown under
controlled conditions in spinach leaves and isolated
thylakoids when electron transport was impaired by anoxic
conditions or chemical inhibitors. The ChlF rise from
minimum fluorescence (Fo) to maximum fluorescence induced by
fast repetition rate (Fm−FRR) flashes was dominated by
reduction of the primary electron acceptor in photosystem II
(QA). The subsequent reoxidation of QA− was quantified
using the relaxation of ChlF in 0.65 ms (Fr1) and 120 ms
(Fr2) phases. Reoxidation efficiency of QA− (Fr1/Fv, where
Fv = Fm−FRR − Fo) decreased when electron transport
was impaired, while quantum efficiency of photosystem II
(Fv/Fm) showed often no significant effect. ChlF relaxations
of the LIFT were similar to an independent other method.
Under increasing light intensities, Fr2′/Fq′ (where
Fr2′ and Fq′ represent Fr2 and Fv in the light-adapted
state, respectively) was hardly affected, whereas the
operating efficiency of photosystem II (Fq′/Fm′)
decreased due to non-photochemical quenching. Fm−FRR was
significantly lower than the ChlF maximum induced by
multiple turnover (Fm−MT) flashes. However, the resulting
Fv/Fm and Fq′/Fm′ from both flashes were highly
correlated. The LIFT method complements Fv/Fm with
information about efficiency of electron transport.
Measurements in situ and from a distance facilitate
application in high-throughput and automated phenotyping.},
cin = {IBG-2},
ddc = {540},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582) / DPPN - Deutsches Pflanzen
Phänotypisierungsnetzwerk (BMBF-031A053A)},
pid = {G:(DE-HGF)POF3-582 / G:(DE-Juel1)BMBF-031A053A},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30357678},
UT = {WOS:000466916000008},
doi = {10.1007/s11120-018-0594-9},
url = {https://juser.fz-juelich.de/record/856917},
}