Low and high temperature dependence of minimum F0 and maximum FM chlorophyll fluorescence in vivo

Pospı́šil, Pavel; Skotnica, Jiří; Nauš, Jan

doi:10.1016/s0005-2728(97)00095-9

Cited by 63 publications

(47 citation statements)

References 23 publications

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“…Optical effects can be in principle minimized by in-filtering leaf samples in glycerin and by measuring the fluorescence in vacuum. 29 Vacuum prevents the ice formation and glycerin can make an amorphous glass of the ice formed on the leaf surface. However, we cannot rule out effect on photosynthetic activity of the leaves by using glycerin and doing measurement in the vacuum is not practical for high-throughput scale.…”

Section: Discussionmentioning

confidence: 99%

“…This would argue against a direct causal relationship between ice formation and tissue damage in Arabidopsis leaves. Pospíšil et al 29 studied variation of F 0 in a broad range of temperatures from -100 °C to until 75 °C in barley plants. They observed a similar non-linear rise of F 0 below -10 °C; however, in addition to this F 0 rose concomitant with F m below -50 °C.…”

Section: Discussionmentioning

confidence: 99%

“…[27][28] Chlorophyll fluorescence measurements in the above mentioned studies were mostly accomplished after controlled freeze -thaw cycles. In contrast, the basic fluorescence parameters such as F 0 [29][30] and F m 29 were also measured during progressive cooling and heating of detached leaves using non-imaging fluorimeters. To the best of our knowledge, only fluorescence F 0 images were recorded during progressive cooling of the plant leaves by imaging fluorescence systems.…”

Section: -19mentioning

confidence: 99%

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Chlorophyll fluorescence emission as a reporter on cold tolerance inArabidopsis thalianaaccessions

Mishra

Hoermiller

et al. 2011

Plant Signaling & Behavior

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Abbreviations: F 0 , minimal fluorescence emission of a dark adapted plant with primary quinine acceptor Q A, oxidized and nonphotochemical quenching inactive; F m , maximum fluorescence emission of a dark adapted plant exposed to a short pulse of a strong light leading to a transient reduction of Q A ; F v , variable fluorescence (F v =F m -F 0 ); F v /F m , ratio interpreted as the maximum quantum yield of PSII photochemistry; P, fluorescence peak at the beginning of the transient with actinic light; M, the secondary maxima of the chlorophyll fluorescence transients subsequent to peak P; F s , steady state fluorescence; PSII, Photosystem II; PSI, Photosystem I; EL, electrolyte leakage; LT 50EL , the temperature (lethal temperature) at which 50% of electrolyte leakage occurs when measured by conductivity in a freeze-thaw cycle

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: -19mentioning

confidence: 99%

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Chlorophyll fluorescence emission as a reporter on cold tolerance inArabidopsis thalianaaccessions

Mishra

Hoermiller

et al. 2011

Plant Signaling & Behavior

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“…Under the non-stress condition these parameters had no obviously change and not affected by the diversity of species and the growth conditions. While the parameters showed a dramatic decline under a stress condition such as high temperature [11], heavy metal stress [7] and weightlessness [9]. In this work the low concentration of K 2 FeO 4 decreased the value of Fv/Fm, ETR and photosynthesis evolution rate, indicating that the oxidation of K 2 FeO 4 can effectively reduce the PS II activity of Microcystis aeruginos.…”

Section: Discussionmentioning

confidence: 58%

Physiological responses to ferrate (VI) stress in Microcystis aeruginosa

et al. 2011

2011 International Conference on Remote Sensing, Environment and Transportation Engineering

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Abstract-Potassium ferrate (VI) has been considered to be an environmentally friendly oxidant. In this paper, a research on the physiological and biochemical changes of the ferrate (VI)'s acting on Microcystis aeruginosa FACHB-905, a common kind in algal bloom, has been performed. Under the action of ferrate (VI), chlorophyll-a content, the photosynthetic oxygen evolution rate, maximum electron transport rate (ETR m ) and maximum photochemical efficiency (Fv/Fm) of Microcystis aeruginosa were significantly decreased, while MC-LR, an extracellular toxin of Microcystis aeruginosa increased. Malonaldehyde (MDA) is oxidatively stressed by low concentration of ferrate (VI). With the increasing concentration of ferrate (VI), MDA content increases, and the activity of SOD and CAT also shows a significant rise. After the treatment of low concentration ferrate (VI), GST activity decreased rapidly, while with the further increasing of ferrate (VI), GST activity increased gradually. This shows that ferrate (VI) produces oxidative stress on Microcystis aeruginosa. The mechanism is that ferrate (VI) inhibits the activity of microcystin photosynthetic PS II system, which leads to the damage to photosynthesis. The accumulation of excessive intracellular free radicals can further lead to the lipid peroxidation of membrane, increasing the membrane permeability, finally causes the death of Microcystis aeruginosa.

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“…In addition, the gradual decrement in the fluorescence is observed in a greater temperature range than 100˚C. This can be modeled as a purely physical effect [7] [8]. This behavior reflects a damage in photosystem PSII and can be used as indicator of thermostability lost [9].…”

Section: Introductionmentioning

confidence: 99%

Thermo-Stability of Natural Products Based on Chlorophyll Species Embedded in Silica Xerogel

Martínez-Mendoza¹,

Espericueta-González²,

González³

et al. 2016

AJAC

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This work studied the thermostability and the biostability of chlorophyll species obtained from an extract of spinach leaves embedded in a silica xerogel matrix. The analysis was done by monitoring the photosystem II (PSII) using fluorescence spectroscopy. Samples were prepared using the sol gel method with a molar ratio of ethanol/H2O/TEOS of 4:11.6:1. Then, silica xerogel matrix was loaded with an extract of spinach leaves, obtained in dark conditions. The measurement of the fluorescence spectra was done at selected temperatures to the corresponding non-physiological regimen. Results indicate that the PSII band position remains unchanged when heat treatment temperature increases up 200˚C. For temperatures above 100˚C, the fluorescence intensity diminishes linearly when the temperature increases. The photosystem II embedded in silica xerogel matrix is decomposed at temperatures above 200˚C.

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Low and high temperature dependence of minimum F0 and maximum FM chlorophyll fluorescence in vivo

Cited by 63 publications

References 23 publications

Chlorophyll fluorescence emission as a reporter on cold tolerance inArabidopsis thalianaaccessions

Chlorophyll fluorescence emission as a reporter on cold tolerance inArabidopsis thalianaaccessions

Physiological responses to ferrate (VI) stress in Microcystis aeruginosa

Thermo-Stability of Natural Products Based on Chlorophyll Species Embedded in Silica Xerogel

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