Phytotoxic effect of silver nanoparticles in Triticum aestivum: Improper regulation of photosystem I activity as the reason for oxidative damage in the chloroplast

Rastogi, Anshu; Živčák, Marek; Tripathi, Durgesh Kumar; Yadav, Saurabh; Kalaji, Hazem M.

doi:10.32615/ps.2019.019

Cited by 116 publications

(49 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The parameter 1 -VI is interpreted as the efficiency/probability by which electrons move from PSII to PSI acceptor side, which was drastically retarded upon heavy metal treatment. The similar effect was observed by Rastogi et al (2019), who suggested that the decrease of 1 -VI was associated with the significant decrease of PSI activity due to metal treatment. Moreover, Küpper et al (2019) discussed that the decline in 1 -VI in leaves under heavy metal treatment related to the decrease in the efficiency or probability with which a PSII trapped electron is transferred to PSI.…”

Section: Discussionsupporting

confidence: 82%

Special issue in honour of Prof. Reto J. Strasser - Chlorophyll a fluorescence parameters as indicators of a particular abiotic stress in rice

Faseela¹,

Sinisha²,

Brestič³

et al. 2020

Photosynt.

119

View full text Add to dashboard Cite

The aim of this study was to evaluate the validity of some chlorophyll (Chl) a fluorescence parameters as early indicators of a particular abiotic stress and also to characterize the effect of different abiotic stresses [high light, NaCl, polyethylene glycol (PEG)-induced osmotic stress, and heavy metals] on the electron transport chain of rice (Oryza sativa L.) seedlings. The results clearly revealed that Chl a fluorescence parameters differ between abiotic stress types and also allowed us to select some parameters which were specifically and intensively affected under different abiotic stresses. We observed that the performance index is a common sensitive parameter to evaluate the effect of above four different abiotic stresses in rice seedlings. Certain Chl a fluorescence parameters were significant for a specific stress. The ratio between the rate constants of photochemical and nonphotochemical deactivation of excited Chl molecules (FV/F0) was prominently decreasing and the maximum quantum yield of nonphotochemical deexcitation was prominently increasing upon exposure to high light stress. The maximum quantum yield of electron transport and the electron transport from PSII donor side to PSII reaction center was highly reduced under NaCl stress in rice seedlings. Moreover, FV/F0 and PSII structure function index were prominently decreasing and the dissipation per cross section was significantly enhancing under PEG stress. The pool size of reduced plastoquinone on the reducing side of PSII [total complementary area between the fluorescence induction curve and maximal chlorophyll fluorescence (FM)], FM, and the probability by which electrons move from PSII to PSI acceptor side were significantly decreasing under heavy metal stress.Additional key words: JIP-test; photosynthesis; plant efficiency analyzer. Abbreviations: 1 -VI -the efficiency/probability with which a PSII trapped electron is transferred to PSI acceptor side; ABS/CS0absorption flux per cross section at t = 0; Area -total complementary area between the fluorescence induction curve and FM; DI0/CS0dissipated energy flux per cross section at t = 0; ET0/CS0 -electron transport flux per cross section at t = 0; FM -maximal chlorophyll fluorescence; F0 -minimal fluorescence; FV -variable fluorescence; FV/F0 -the ratio between the rate constants of photochemical and nonphotochemical deactivation of excited Chl molecules; FV/FM -maximum quantum efficiency of PSII under dark adaptation; PI(abs) -performance index; RC/ABS -fraction of active PSII reaction centers; SFI(abs) -PSII structure-function-index; Tf(max) -time to reach maximal fluorescence; TR0/CS0 -trapped energy flux per cross section at t = 0; VI -the relative variable fluorescence at I-step; VJ -the relative variable fluorescence at J-step; VK/VJ -the ratio of variable fluorescence in time 0.3 ms to variable fluorescence in time 2 ms as an indicator of the PSII donor side limitation; ΦD0 -maximum quantum yield of nonphotochemical deexcitation; ΦE0 -the electron transport quantum yield. Acknowledgem...

show abstract

Section: Discussionsupporting

confidence: 82%

Special issue in honour of Prof. Reto J. Strasser - Chlorophyll a fluorescence parameters as indicators of a particular abiotic stress in rice

Faseela¹,

Sinisha²,

Brestič³

et al. 2020

Photosynt.

119

View full text Add to dashboard Cite

show abstract

“…Among various photosynthetic parameters, maximal photochemical efficiency of PSII (Fv/Fm) and performance index (PIABS) were selected to be represented in this manuscript due to its proven sensitivity to identify the abiotic stress response in different plants (Kalaji et al 2017, Rastogi et al 2019a. Fv/Fm indicates the maximum quantum yield of PSII photochemistry, whereas PIABS is a photosynthetic parameter that takes into consideration a number of different phenomena related to PSII photochemistry (Zivcak et al 2008).…”

Section: Different Photosynthetic Parametersmentioning

confidence: 99%

“…NaCl (Bussotti et al 2011, Kalaji et al 2014, Rastogi et al 2019a. Chl induction curve is an indicator of different phenomena of photosynthetic light reactions.…”

Section: Genotypementioning

confidence: 99%

“…JIP-test uses several mathematical formulae for the purpose to decipher the energy flow in the thylakoids membrane, and is able to describe primary photosynthetic reactions (Strasser 1978(Strasser , 1981. In recent years, JIP-test has been successfully applied to understand the mechanism of action of several stress factors in plants (Bussotti et al 2011, Bayat et al 2018, Rastogi et al 2019a. Therefore in this study, we used the JIP-test to understand the salinity tolerance mechanism in sorghum in order to select the best genotype (among studied six genotypes), which can be suitable for growing under salinity conditions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Special issue in honour of Prof. Reto J. Strasser - JIP-test as a tool to identify salinity tolerance in sweet sorghum genotypes

Rastogi¹,

Kovár²,

He³

et al. 2020

Photosynt.

Self Cite

View full text Add to dashboard Cite

The effect of salinity on primary photochemical reactions (using JIP-test) in six sweet sorghum genotypes was tested. An increase in salt concentrations induced significantly the accumulation of proline and caused a decline in leaf osmotic potential. Except for 100 mM NaCl concentration, salinity significantly decreased chlorophyll content and photosynthetic efficiency of plants. Increasing salinity led to a higher accumulation of QB-nonreducing PSII reaction centers. K-step in OJIP fluorescence transient was observed for the most sensitive genotypes under the high NaCl concentration. The studied sorghum genotypes responded differently to salinity stress. Thus, the study helps understand the plant tolerance mechanisms of different sweet sorghum genotypes to increasing salinity stress. The study also confirmed that the use of JIP-test is suitable for the identification of sorghum genotypes according to their growth under salinity stress.

show abstract

“…However, a proportion of this energy is released in the form of heat and fluorescence. When the electron transport in the photosynthetic system is partially or completely blocked due to a stress factor, the emitted fluorescence intensity increases, reflecting less use of photosynthetically active radiation by plants [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Early Identification of Herbicide Modes of Action by the Use of Chlorophyll Fluorescence Measurements

Hassannejad

Lotfi

Ghafarbi

et al. 2020

Plants

View full text Add to dashboard Cite

The effect of seven herbicides (U-46 Combi Fluid, Cruz, MR, Basagran Bromicide, Lumax, and Gramoxone) on Xanthium strumarium plants was studied. Chlorophyll content and fluorescence, leaf temperature, and stomatal conductance were evaluated at 12 h, 36 h, 60 h, and 84 h after herbicides application. U46 Combi Fluid, Cruz, and MR did not have a significant effect on chlorophyll fluorescence induction curves as compared to the control treatment. However, Basagran, Bromicide, Lumax, and Gramoxone showed significant changes in the shape of polyphasic fluorescence transients (OJIP transients). Variations in chlorophyll content index, leaf temperature, and stomatal conductance parameters were dependent on the type of applied herbicide. Our study revealed that the specific impact of the applied herbicides on the photosynthetic efficiency of plants is related to their chemical groups and their mechanism of action.

show abstract

Phytotoxic effect of silver nanoparticles in Triticum aestivum: Improper regulation of photosystem I activity as the reason for oxidative damage in the chloroplast

Cited by 116 publications

References 53 publications

Special issue in honour of Prof. Reto J. Strasser - Chlorophyll a fluorescence parameters as indicators of a particular abiotic stress in rice

Special issue in honour of Prof. Reto J. Strasser - Chlorophyll a fluorescence parameters as indicators of a particular abiotic stress in rice

Special issue in honour of Prof. Reto J. Strasser - JIP-test as a tool to identify salinity tolerance in sweet sorghum genotypes

Early Identification of Herbicide Modes of Action by the Use of Chlorophyll Fluorescence Measurements

Contact Info

Product

Resources

About