Effects of salinity on photosynthesis in maize probed by prompt fluorescence, delayed fluorescence and P700 signals

Kan, Xin; Ren, Jiaojiao; Chen, Tingting; Cui, Min; Li, Chenliu; Zhou, Ronghua; Zhang, Yu; Liu, Huanhuan; Deng, Dexiang; Yin, Zhitong

doi:10.1016/j.envexpbot.2017.05.019

Cited by 64 publications

(48 citation statements)

References 54 publications

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“…Similarly to our results, pre-exposure of seeds to electromagnetic and SMF treatment does not cause any significant changes in Fv/Fm and Fv/Fo under water deficit in corn and saline conditions in soybean [11,37]. Salt stress caused injuries to the oxygen-evolving complex and reduced the quantum yield of PSII electron transport and efficiency of PSII in maize [40]. The RC/CSm, which stands for the active reaction centres at Fm, was also a good indicator for assessment of the effects of salt stress on plants.…”

Section: Discussionsupporting

confidence: 85%

“…To monitor the alteration in the photosynthetic apparatus and its functional competence, chlorophyll a fluorescence is widely used as a detecting tool for the effect of salt stress on plants [40]. Our results also showed that the OJIP parameters of maize leaves, like maximal quantum efficiency of PSII (calculated from Fv/Fm) and the efficiency of the water-splitting complex on the donor side of PSII (as inferred from Fv/Fo), were reduced by salt stress and both Fv/Fm and Fv/Fo were enhanced in the leaves of SMF-treated seeds but not significantly in both saline and nonsaline conditions.…”

Section: Discussionmentioning

confidence: 99%

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Mitigation of adverse effects of salt stress on germination, growth, photosynthetic efficiency and yield in maize (Zea mays L.) through magnetopriming

Baghel¹,

Kataria

Jain

2019

Acta Agrobot

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The efficiency of magnetopriming was evaluated for mitigation of the detrimental effects of salt stress on maize germination, growth, photosynthesis, and yield of maize plants. Maize seeds were pretreated with 200 mT of static magnetic field (SMF) for 1 h to assess the impact of SMF on the germination, seedling vigor, growth of plant, photosynthetic performance, ROS content, and yield under salt stress. The seedling characteristics of maize were negatively influenced by salt stress. However, SMF-pretreated maize seeds showed relatively higher germination percentage and germination stress tolerance index as compared to untreated seeds in saline and nonsaline conditions. The detrimental effect of NaCl induced salt stress was also observed on growth, yield, and different physiological characteristic of maize plants.The results showed that SMF-pretreated seeds enhanced seedling vigor, growth parameters such as plant height, leaf area, and biomass accumulation at different concentrations of NaCl (0, 25, 50, 75, and 100 mM) as compared to untreated seeds. Photosynthetic pigments, quantum yield of PSII photochemistry (Fv/Fm), phenomenological fluxes such as electron transport per leaf CS (ETo/CSm) and density of reaction centers (RC/CSm), the performance index (PI) were high in the leaves of plants that emerged from SMF-pretreated seeds as compared to untreated seeds. This stimulatory effect of SMF treatment of seeds was also revealed in the rate of photosynthesis and stomatal conductance, which results in improved yield of maize plants under saline conditions. The leaves from plants of SMF-treated seeds showed decreased hydrogen peroxide (H 2 O 2 ) when compared with untreated seeds in both conditions. SMF ameliorates the adverse effect of salt stress in maize plants, by reducing H 2 O 2 and increasing growth, photosynthetic performance, and yield under salt stress. For improvement of salt tolerance, magnetopriming with SMF of 200 mT for 1 h to dry seeds of maize can be efficiently used as a presowing treatment.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Mitigation of adverse effects of salt stress on germination, growth, photosynthetic efficiency and yield in maize (Zea mays L.) through magnetopriming

Baghel¹,

Kataria

Jain

2019

Acta Agrobot

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“…Therefore, it was assumed that different sites of photosynthetic electron transport chain might have variable responses against single or in combination of salt and drought stresses. In this regard, Chl fluorescence can be a useful tool to investigate alterations in electron transport chain specifically at (1) PSII electron donor side, (2) transport of electron between PSII and PSI, and (3) electron acceptor side of PSI under salt and drought stress (Strasser et al 2010, Kan et al 2017. The literature regarding the potential capability of Chl a fluorescence to detect the changes in photosynthetic apparatus in sunflower is rather scarce.…”

Section: Introductionmentioning

confidence: 99%

Responses of photosynthetic apparatus in sunflower cultivars to combined drought and salt stress

Umar¹,

Uddin²,

Siddiqui³

2019

Photosynt.

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Response of photosynthetic apparatus in some sunflower cultivars, i.e., S.28111, Hysun-33, Hysun-39, and SF0049, to salt, drought, and combined stresses were studied. The combined stress caused severe damage to photosynthetic apparatus as compared to single stress. The maximum quantum yield of PSII, phenomenological fluxes, plastoquinone pool size, performance indexes, and driving force of absorption were greatly affected by the combined stress. Among the cultivars, the combined stress produced synergistic effect (greater damage) in Hysun-33 and cross-tolerance (lesser damage) in S.28111. Similarly, concerning the ion imbalance, S.28111 and SF0049 showed lower Na + and Clconcentrations with lesser electrolyte leakage as compared to Hysun-33 and Hysun-39 under salt and combined stress. Results revealed that the disturbance in photosynthetic performance could be easily determined using JIP test by measuring chlorophyll a fluorescence. This information can be useful for the screening of oil-seed crop plants having better photosynthetic performance under salinized and desertified conditions.Additional key words: electron transport rate; malondialdehyde; nonphotochemical quenching; OJIP transient. Abbreviations: ABS/RC -apparent antenna size of active PSII RC; Area -area over the fluorescence curve between F0 and Fm; DFABSdriving force on absorption basis; DI0/RC -effective dissipation of energy in active RC; ET0/RC -electron transport per active reaction center; F0 -minimum fluorescence; F0/Fv -efficiency of water-splitting complex; F0/Fm -quantum yield baseline; Fm -maximum fluorescence; Fm/F0 -electron transport rate through PSII; Fv/F0 -size and number of active reaction centers of photosynthetic apparatus; Fv/Fm -maximum quantum yield of PSII; J -linear electron transport rate; MDA -malondialdehyde; NPQ -nonphotochemical quenching; PIABS -performance index on absorption basis; PICS -performance index on cross-section basis; PItot -total performance index; qN -nonphotochemical quenching coefficient; qP -photochemical quenching; RC/ABS -density of reaction centers on chlorophyll basis; RC/CSm -amount of active reaction centers per excited cross section; TR0/DI0 -ratio of trapping and dissipation fluxes; TR0/RC -maximal trapping rate of absorbed photons in RC; δR0 or RE0/ET0 -probability that an electron is transported from reduced PQ to electron acceptor side of PSI; ΔVIP -amplitude of the relative variable fluorescence of the I-to-P-rise; ΦPSII -efficiency of PSII or quantum yield of PSII; ϕR0 -quantum yield for reduction of the end electron acceptors at the PSI acceptor side (RE); ψ0yield of electron transport per trapped excitation or probability with which a PSII trapped electron is transferred from reduced QA to QB.

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“…Among physiological responses, photosynthesis-related characteristics are suggested as being extremely sensitive to suboptimal conditions, reflecting overall physiological state of plants (Baker, 2006). Chlorophyll a fluorescence-related parameters are frequently used for early prediction of unfavourable physiological changes (Kan et al, 2017;Kalaji et al, 2018). In particular, chlorophyll a fluorescence measurements have been used in heavy metal studies (Han et al, 2013;Sghaier et al, 2015;Anjum et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Physiological Responses of Wetland Species Rumex Hydrolapathum to Increased Concentration of Biogenous Heavy Metals Zn and Mn in Substrate

Ievinsh

Dišlere

Karlsons

et al. 2020

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

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Communicated by Mâris KïaviòðThe aim of the present study was to determine if individuals of Rumex hydrolapathum Huds native to saline wetlands are able to tolerate high concentration of biogenous heavy metals Zn and Mn in substrate and to accumulate high concentration of these metals in aboveground parts. Plant physiological status was monitored by using non-destructive analysis of chlorophyll and chlorophyll a fluorescence. R. hydrolapathum plants accumulated up to 1840 mg·kg -1 Zn and 6400 mg·kg -1 Mn in older leaves. The usefulness of monitoring changes in chlorophyll concentration and chlorophyll a fluorescence parameters to predict physiological response of R. hydrolapathum plants to excess Zn and Mn was not supported, as the lack of significant changes indicated that the model species showed adaptation to increased amount of metals in actively photosynthesizing tissues. It appears that Zn and Mn tolerance of R. hydrolapathum is based primarily at the physiological level where metal accumulation in younger leaves and roots is restricted, and development of new leaves is promoted together with induction of senescence in older leaves that have accumulated the majority of Zn and Mn. R. hydrolapathum can be characterised as a very promising model species for further studies for practical phytoremediation needs.

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Effects of salinity on photosynthesis in maize probed by prompt fluorescence, delayed fluorescence and P700 signals

Cited by 64 publications

References 54 publications

Mitigation of adverse effects of salt stress on germination, growth, photosynthetic efficiency and yield in maize (Zea mays L.) through magnetopriming

Mitigation of adverse effects of salt stress on germination, growth, photosynthetic efficiency and yield in maize (Zea mays L.) through magnetopriming

Responses of photosynthetic apparatus in sunflower cultivars to combined drought and salt stress

Physiological Responses of Wetland Species Rumex Hydrolapathum to Increased Concentration of Biogenous Heavy Metals Zn and Mn in Substrate

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