Search Results

You are looking at 41 - 50 of 206 items for :

  • "electron transport" x
Clear All

primary photochemical reactions of photosynthesis during senescence, photosynthetic electron transport and photophosphorylation were investigated using thylakoids isolated from ginkgo leaves. Approximately 2 g of leaves, without petioles (n = 5), were

Free access

similar compared with 0.747 in WT. The Chl fluorescence from PSII showed that ΦII in hy was lower than WT. Moreover, the fraction of the photochemical electron transport energy from PSII represented by qP was decreased in hy compared with WT. The

Free access

associated with the quantum yield of noncyclic electron transport, was estimated from (F m ′ – F t )/F m ′ ( Genty et al., 1989 ). The fraction of photons absorbed by PSII, which was not used in photochemistry or dissipated in the PSII antenna (%X), was

Free access

The photosystem II reaction center is the most sensitive reaction center in photosynthesis to heat stress ( Wen et al., 2005 ). Heat stress decreases photosynthetic electron transport activity and variable fluorescence and maximum fluorescence (Fv

Free access

for the events of absorption, trapping, electron transport, and dissipation on a RC basis [ABS/RC = (M 0 /Vj)/(Fv/Fm), TR 0 /RC = M 0 /Vj, ET 0 /RC = M 0 /Vj·ψ 0 , DI 0 /RC = (ABS/RC) – (TR 0 /RC)] were calculated as well as quantum efficiencies on an

Free access

chloroplasts is dissipated through three reciprocally related pathways: photosynthetic electron transport, chlorophyll fluorescence, and heat dissipation ( Hendrickson et al., 2004 ). F V / F M reflects the ability of antenna pigments to absorb and convert

Open Access

a corresponding decrease in electron transport and ATP synthesis, ultimately resulting in oxidative damage ( Bjorn, 2004 ; Rao et al., 1996 ). High ultraviolet-B may also affect photosynthesis indirectly by photobleaching and photodegradation of

Free access

total chlorophyll content and photosynthetic rates accompanied by a partial inhibition of photosynthetic electron transport in photosystem II (PSII) in response to Al 3+ have been reported in some species ( Chen et al., 2005a , 2005b ; Chen, 2006

Free access

. Growing seedlings at high densities (up to 4000 plants/m 2 ) can make supplemental lighting more cost-effective ( Graper et al., 1989 ; van Iersel, 2017 ). The energy from photons absorbed by photosynthetic pigments can be used for electron transport in

Open Access

actual production. Proteins related to electron transport. Two proteins related to electron transport were identified in our study. S1 is a protein of cytochromases and S5 is a protein of hemoglobin binding proteins. Cytochrome enzymes and hemoglobin

Free access