2015
DOI: 10.1007/s11120-015-0102-4
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Photoprotective capacity of non-photochemical quenching in plants acclimated to different light intensities

Abstract: Arabidopsis plants grown at low light were exposed to a gradually increasing actinic light routine. This method allows for the discerning of the photoprotective component of NPQ, pNPQ and photoinhibition. They exhibited lower values of Photosystem II (PSII) yield in comparison to high-light grown plants, and higher calculated dark fluorescence level (F'o calc.) than the measured one (F'o act.). As a result, in low-light grown plants, the values of qP measured in the dark appeared higher than 1. Normally, F'o a… Show more

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Cited by 93 publications
(91 citation statements)
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“…One important conclusion of this work is that regardless of the type of mutation, the light tolerance was solely determined by the amplitude of pNPQ Ware et al, 2014 ), plants must develop pNPQ of approximately 4, which is probably the top value for this species. As expected, plants acclimated to low light exhibited lower light tolerance (Ware et al, 2015a). The formation of a larger antenna causes higher excitation pressure, hence changing the steepness in the relationship between NPQ and tolerated light intensity.…”
Section: Protective Effectiveness Of Npqsupporting
confidence: 72%
“…One important conclusion of this work is that regardless of the type of mutation, the light tolerance was solely determined by the amplitude of pNPQ Ware et al, 2014 ), plants must develop pNPQ of approximately 4, which is probably the top value for this species. As expected, plants acclimated to low light exhibited lower light tolerance (Ware et al, 2015a). The formation of a larger antenna causes higher excitation pressure, hence changing the steepness in the relationship between NPQ and tolerated light intensity.…”
Section: Protective Effectiveness Of Npqsupporting
confidence: 72%
“…In contrast to Zhefu802, Chl-8 had a higher qE and lower qI under both moderate and high light treatments. qE is major photoprotective component, whereas qI is mainly induced by the inactivation damage of PSII reaction centers and results from photoinhibition (Quaas et al, 2015; Ware et al, 2015). There were significantly lower levels of qI in Zhefu802 and Chl-8 under the moderate light treatment compared with the high light treatment.…”
Section: Discussionmentioning
confidence: 99%
“…There is a long history of treating "q I " or inhibitory quenching (Horton et al, 1996) as a component of non-photochemical quenching, in the broadest sense. Photoinactivation of PSII causes changes in PSII fluorescence emission variables, particularly increases in F 0 and F 0 ′ (Oxborough and Baker, 1997;Ware et al, 2015) that could overlap or interfere with changes provoked by induction of YNPQ (Kulk et al, 2012(Kulk et al, , 2013. Although neither F 0 nor F 0 ′ are explicitly included in calculation of YNPQ nor YNO, underlying changes in F 0 ′ could shift the level of steady state fluorescence under illumination, F S , which is part of the YNPQ and YNO parameters.…”
Section: Methodsmentioning
confidence: 99%