The chlorophyll a fluorescence as an indicator of the temperature stress in the leaves of Prunus persica

Martinazzo, Emanuela Garbin; Ramm, Aline; Bacarin, Marcos Antônio

doi:10.1590/s1677-04202013005000001

Cited by 50 publications

(28 citation statements)

References 22 publications

(30 reference statements)

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“…The results of fast kinetics of chlorophyll a fluorescence showed highly significant increase of Fo and similarly significant decrease of F M parameters of leaves infected with powdery mildew above 75% (Figure 2). Furtermore, an additional peak was observed at Fk, which was in line with the findings of Oukarroum et al (2012) and Martinazzo et al (2012). Regarding the Fo and Fm parameters, the same trend was observed by Ranjbar (2017) in drought stressed leaves of Pistacia vera L., as well as by Martinazzo et al (2012) in temperature stressed leaves of Prunus persica L. The increase of the Fo value can be the consequence of impaired transfer of excitation energy which starts at reaction centers and ends at the antenna (Schreiber et al, 1998), and thus, indicate the damage of the photosystem apparatus; for example, the irreversible inactivation of reaction centers of PSII (Ranjbar, 2017).…”

Section: Resultssupporting

confidence: 89%

Effects of oak powdery mildew (Erysiphe alphitoides [Griffon and Maubl.] U. Braun and S. Takam.) on photosynthesis of pedunculate oak (Quercus robur L.)

Vastag

Kastori

Orlović

et al. 2019

Zb Mat srp prir nauk

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Section: Resultssupporting

confidence: 89%

Effects of oak powdery mildew (Erysiphe alphitoides [Griffon and Maubl.] U. Braun and S. Takam.) on photosynthesis of pedunculate oak (Quercus robur L.)

Vastag

Kastori

Orlović

et al. 2019

Zb Mat srp prir nauk

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“…The effects of different environmental stresses on photosynthesis can be effectively studied using chlorophyll a (Chl a) fluorescence kinetics as it is a noninvasive tool for the detection and quantification of the changes in the photosynthetic apparatus. Analysis of Chl a fluorescence parameters can be used as a precise tool to test direct response of adverse environmental factors, such as NaCl (Hniličková et al 2017), high light (Faseela and Puthur 2017), drought (Krasteva et al 2013), temperature (Martinazzo et al 2013, Feng et al 2014, nutrient deficiency (Živčák et al 2014(Živčák et al , Kalaji et al 2017, heavy metals (Kalaji and Loboda 2007), herbicides or air pollutants toxicity (Hassan et al 2013), ultraviolet radiation (Šprtová et al 2000, Faseela andPuthur 2018), long-term exposure to shade (Dąbrowski et al 2015), and the indirect assessment of their impact on plants.…”

Section: Introductionmentioning

confidence: 99%

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.

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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...

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“…However, after 72 h of heat treatment, ABS/RC value decreased, which can be due to conversion of inactive RCs into active ones. These findings are further supported by a drop in Φ Eo after heat treatment and its recovery after 72 h. According to Martinazzo et al (), the drop in Φ Eo indicates a slowdown of Q A reduction likely due to increased inactivation of RCs and/or due to already accumulated reduced Q A during heat treatment (Bussotti et al ).…”

Section: Resultsmentioning

confidence: 72%

Photosynthetic acclimation of Chlorella saccharophila to heat stress

Patil

Pandit

Lali

2017

Phycological Research

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Photosynthesis is one of the most important metabolic processes of algae; which is altered as a stress response. During mass cultivation of algae, temperature rise and high light are major factors that affect biomass productivity. High temperature affects photosystem II (PSII) complex irreversibly, damaging intermolecular interactions in it. However, the impact of high temperature on photosynthesis is highly variable among different algal species, depending on the prior acclimation to environmental conditions they were exposed to. The acclimation plays an important role in combating high temperature stress via regulation of photosynthetic responses. Chlorophyll a fluorescence is a highly sensitive, non-destructive and reliable tool for such measurements of photosynthetic parameters, which provides information about algal photosynthetic performance under given conditions. To understand the effect of heat stress on the responses of high light acclimated alga Chlorella saccharophila, chlorophyll a fluorescence transients were measured after heat exposure at 40 C. Our study demonstrates that rise in temperature for short duration; during open field cultivation reversibly affects the efficiency of PSII in light acclimated alga C. saccharophila. The effects of heat stress on chlorophyll a fluorescence in this alga, grown under high light (max-1600 μmol photons m −2 s −1 ) are presented here; they are used to infer changes in photosynthetic process during its exposure to heat, as well as their recovery after 72 h. We speculate that heat resistance may have been acquired due to prior exposures to high light.

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The chlorophyll a fluorescence as an indicator of the temperature stress in the leaves of Prunus persica

Cited by 50 publications

References 22 publications

Effects of oak powdery mildew (Erysiphe alphitoides [Griffon and Maubl.] U. Braun and S. Takam.) on photosynthesis of pedunculate oak (Quercus robur L.)

Effects of oak powdery mildew (Erysiphe alphitoides [Griffon and Maubl.] U. Braun and S. Takam.) on photosynthesis of pedunculate oak (Quercus robur L.)

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

Photosynthetic acclimation of Chlorella saccharophila to heat stress

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