A light-induced decrease in the photochemical reflectance index (PRI) can be used to estimate the energy-dependent component of non-photochemical quenching under heat stress and soil drought in pea, wheat, and pumpkin

Yudina, Lyubov; Sukhova, Ekaterina; Gromova, Ekaterina; Nerush, Vladimir; Vodeneev, Vladimir; Sukhov, Vladimir

doi:10.1007/s11120-020-00718-x

Cited by 52 publications

(66 citation statements)

References 65 publications

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“…All intensities of the reflected light were averaged within about 2 nm spectral bands. We analyzed the light-induced changes in the PRIs (∆PRIs) because elimination of the variety of initial levels of the PRIs strongly decreased the standard errors of the measured values in our experiments (data not shown); the result was in full accordance with our early works [26,38,62]. The initial level of the PRIs was measured 2 min before initiation of the first illumination by AL during the experiment.…”

Section: Calculation Of the Photosynthetic Parameters And The Photochsupporting

confidence: 78%

Section: Methodsmentioning

confidence: 99%

“…Pea seedlings were used in this investigation because these seedlings offered a suitable model object in our earlier investigations [26,37,38,62,64]. In particular, we previously showed that a reference wavelength equal to 570 nm is optimal for PRI calculation in this object [26], and that light-induced changes in PRIs (∆PRIs) were more effective for the estimation of NPQ in peas than the absolute values of these indices [62,64]. Additionally, it was known that durations of de-epoxidation and epoxidation in the xanthophyll cycle were about 10 min or more in peas [49]; in contrast, changes in the chloroplast light scattering were observed for about 1-2 min after the initiation or termination of illumination [38,65].…”

Section: Methodsmentioning

confidence: 99%

“…In particular, these correlations are sensitive to illumination conditions and the scale of measurement, as well as to the parameters of stressor-induced changes in photosynthetic processes [37,56]. The use of light-induced changes in PRIs (∆PRIs) can strongly decrease errors of the PRI value; however, correlation coefficients between ∆PRI and photosynthetic parameters can be also varied [31,[57][58][59][60][61][62][63][64].…”

Section: Introductionmentioning

confidence: 99%

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Relation of Photochemical Reflectance Indices Based on Different Wavelengths to the Parameters of Light Reactions in Photosystems I and II in Pea Plants

Sukhova

Sukhov

2020

Remote Sensing

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Measurement and analysis of the numerous reflectance indices of plants is an effective approach for the remote sensing of plant physiological processes in agriculture and ecological monitoring. A photochemical reflectance index (PRI) plays an important role in this kind of remote sensing because it can be related to early changes in photosynthetic processes under the action of stressors (excess light, changes in temperature, drought, etc.). In particular, we previously showed that light-induced changes in PRIs could be strongly related to the energy-dependent component of the non-photochemical quenching in photosystem II. The aim of the present work was to undertake comparative analysis of the efficiency of using light-induced changes in PRIs (∆PRIs) based on different wavelengths for the estimation of the parameters of photosynthetic light reactions (including the parameters of photosystem I). Pea plants were used in the investigation; the photosynthetic parameters were measured using the pulse-amplitude-modulated (PAM) fluorometer Dual-PAM-100 and the intensities of the reflected light were measured using the spectrometer S100. The ∆PRIs were calculated as ∆PRI(band,570), where the band was 531 nm for the typical PRI and 515, 525, 535, 545, or 555 nm for modified PRIs; 570 nm was the reference wavelength for all PRIs. There were several important results: (1) ∆PRI(525,570), ∆PRI(531,570), ∆PRI(535,570), and ∆PRI(545,570) could be used for estimation of most of the photosynthetic parameters under light only or under dark only conditions. (2) The combination of dark and light conditions decreased the efficiency of ∆PRIs for the estimation of the photosynthetic parameters; ∆PRI(535,570) and ∆PRI(545,570) had maximal efficiency under these conditions. (3) ∆PRI(515,570) and ∆PRI(525,570) mainly included the slow-relaxing component of PRI; in contrast, ∆PRI(531,570), ∆PRI(535,570), ∆PRI(545,570), and ∆PRI(555,570) mainly included the fast-relaxing component of PRI. These components were probably caused by different mechanisms.Plants were cultivated hydroponically (a half-strength Hoagland-Arnon medium) in a Binder KBW 240 climatic chamber (Binder GmbH, Tuttlingen, Germany) at 23 • C under a 16/8 light/dark photoperiod. The measurements were performed on 2-3-week-old plants. The reflectance and photosynthetic parameters were investigated in the second mature leaves.2.2. The Procedure of the Measurements of the Photosystem II Fluorescence, Photosystem I Light Absorption, and Reflected Light Intensity in Pea Figure 1a shows the schema of simultaneous measurements of the intensity of the reflected light, fluorescence of PSII, and light absorption of PSI in pea leaves, which was previously described in detail [64]. The leaves were fixed in the measuring system before the experimental procedure.The PSII fluorescence and PSI absorption measurements were performed using a standard Dual-PAM-100 measuring system (Heinz Walz GmbH, Effeltrich, Germany).The system analyzed photosynthetic parameters on basis of method of the pulse...

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Section: Calculation Of the Photosynthetic Parameters And The Photochsupporting

confidence: 78%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Relation of Photochemical Reflectance Indices Based on Different Wavelengths to the Parameters of Light Reactions in Photosystems I and II in Pea Plants

Sukhova

Sukhov

2020

Remote Sensing

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“…Stress can lead to changes in reflectance spectra, and these changes can be used to calculate different vegetation indices, such as normalized difference vegetation index (NDVI) and photochemical reflectance index (PRI). These changes in reflectance spectra have also been linked to photosynthetic light-use efficiency [ 14 , 15 ]. Furthermore, NDVI was applied for estimating the water content (WC) associated with the water absorption band centered at 1240 nm [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Use of Non-Destructive Measurements to Identify Cucurbit Species (Cucurbita maxima and Cucurbita moschata) Tolerant to Waterlogged Conditions

Lin

Huang

et al. 2020

Plants

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Limited information is available regarding the physiology of squash plants grown under waterlogging stress. The objectives of this study were to investigate the growth and physiological performances of three cucurbit species, Cucurbita maxima cultivar (cv.) OK-101 (OK) and Cucurbita moschata cv. Early Price (EP) and Strong Man (SM), in response to waterlogging conditions, and to develop a precise, integrated, and quantitative non-destructive measurement of squash genotypes under stress. All tested plants were grown in a growth chamber under optimal irrigation and growth conditions for a month, and the pot plants were then subjected to non-waterlogging (control) and waterlogging treatments for periods of 1, 3, 7, and 13 days (d), followed by a 3-d post-waterlogging recovery period after water drainage. Plants with phenotypes, such as fresh weight (FW), dry weight (DW), and dry matter (DM) of shoots and roots, and various physiological systems, including relative water content (RWC), soil and plant analysis development (SPAD) chlorophyll meter, ratio of variable/maximal fluorescence (Fv/Fm), quantum photosynthetic yield (YII), normalized difference vegetation index (NDVI), and photochemical reflectance index (PRI) values, responded differently to waterlogging stress in accordance with the duration of the stress period and subsequent recovery period. When plants were treated with stress for 13 d, all plants exhibited harmful effects to their leaves compared with the control, but EP squash grew better than SM and OK squashes and exhibited stronger tolerance to waterlogging and showed less injury. Changes in the fresh weight, dry weight, and dry matter of shoots and roots indicated that OK plants suffered more severely than EP plants at the 3-d drainage period. The values of RWC, SPAD, Fv/Fm, YII, NDVI, and PRI in both SM and OK plants remarkably decreased at waterlogging at the 13-d time point compared with controls under identical time periods. However, the increased levels of SPAD, Fv/Fm, YII, NDVI, and PRI observed on 7 d or 13 d of waterlogging afforded the EP plant leaf with improved waterlogged tolerance. Significant and positive correlations were observed among NDVI and PRI with SPAD, Fv/Fm, and YII, indicating that these photosynthetic indices can be useful for developing non-destructive estimations of chlorophyll content in squashes when screening for waterlogging-tolerant plants, for establishing development practices for their cultivation in fields, and for enhanced cultivation during waterlogging in frequently flooded areas.

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Shifts in biochemical and physiological responses by the inoculation of arbuscular mycorrhizal fungi in Triticum aestivum growing under drought conditions

et al. 2021

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BACKGROUND A decrease in rainfall is one of the main constraints on wheat production, although the association of wheat with arbuscular mycorrhizal fungi (AMF) may be an alternative for crop production under drought conditions. In the present study, we used three wheat cultivars (Purple, Ilustre and Maxi Baer) inoculated with two AMF strains, one obtained from the hyperarid Atacama Desert (northern Chile; Fm) and the other obtained from southern Chile (Cc). Plants were maintained under two irrigation conditions (normal irrigation and drought) and the physiological behaviour and enzymatic and nonenzymatic antioxidant activities in the shoots were determined. In addition, the phenolic compounds were identified by high‐performance liquid chromatography‐dioide array detection‐electrospray ionization‐tandem mass spectrometry and quantified. RESULTS AMF colonization produced higher levels of efficiency of photosystem II and photosynthetic pigments. High values of catalase in Purple‐Cc, ascorbate peroxidase in Purple‐Cc, glutathione reductase in Maxi‐Cc and superoxide dismutase in Purple‐Cc, all under stress, were registered. Of the inoculated cultivars, Purple‐Cc showed the highest flavonoid levels, whereas hydroxycinnamic acids were higher in Maxi‐Fm without drought, with apigenin and luteolin being the most abundant. High levels of phenols were present in the Ilustre‐Fm plants without drought. Under normal irrigation, high levels of antioxidant activity were registered in the AMF treatments, whereas, under stress conditions, in general, high values were observed under the Fm inoculation. CONCLUSION Our results showed that the greatest antioxidant activity and phenolic content occurred in wheat plants inoculated with AMF, indicating their influence on coping with water stress, which is of importance in vast areas where global climate change is resulting in diminished rainfall. © 2021 Society of Chemical Industry.

show abstract

A light-induced decrease in the photochemical reflectance index (PRI) can be used to estimate the energy-dependent component of non-photochemical quenching under heat stress and soil drought in pea, wheat, and pumpkin

Cited by 52 publications

References 65 publications

Relation of Photochemical Reflectance Indices Based on Different Wavelengths to the Parameters of Light Reactions in Photosystems I and II in Pea Plants

Relation of Photochemical Reflectance Indices Based on Different Wavelengths to the Parameters of Light Reactions in Photosystems I and II in Pea Plants

Use of Non-Destructive Measurements to Identify Cucurbit Species (Cucurbita maxima and Cucurbita moschata) Tolerant to Waterlogged Conditions

Shifts in biochemical and physiological responses by the inoculation of arbuscular mycorrhizal fungi in Triticum aestivum growing under drought conditions

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