Induction of cyclic electron flow around photosystem 1 and state transition are correlated with salt tolerance in soybean

Lu, Kaixing; Yang, Yajie; He, Yi; Jiang, Dongxiang

doi:10.1007/s11099-008-0003-2

Cited by 21 publications

(20 citation statements)

References 40 publications

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“…5b-f). Therefore, salt priming ameliorated salt-induced oxidative stress in sweet sorghum not by strengthening ROS scavenging capacity and probably through the approaches such as xanthophyll cycle and PSI cyclic electron transport for depressing the induction of ROS creation (Azzabi et al 2012;Lu et al 2008;Zivcak et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake

Cao³

et al. 2015

Acta Physiol Plant

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This study attempted to explore how salt priming affected salt tolerance in sweet sorghum with emphasis on root Na ? uptake. After 10 days of pretreatment with 150 mM NaCl, plants were stressed with 300 mM NaCl. After salt stress for 7 days, dry matter of root and shoot decreased by 58.7 and 69.7 % in non-pretreated plants and by 37.9 and 41.3 % in pretreated plants. Consistently, pretreated plants maintained higher photosynthetic rate during salt stress, suggesting the enhanced tolerance by salt priming. Salt priming enhanced osmotic resistance, as proline and relative water contents in the leaf were higher in pretreated plants under salt stress. Salt priming alleviated salt-induced oxidative damage not by improving antioxidant protection due to lower increase in leaf malondialdehyde content and no extra induction on ascorbate peroxidase, catalase, superoxide dismutase, ascorbic acid and reduced glutathione in pretreated plants. After 7 days of salt stress, root Na ? efflux increased by 8.5-and 3.9-folds in pretreated and non-pretreated plants, suggesting that salt priming reduced root Na ? uptake, and then root and leaf Na ? accumulation were mitigated in pretreated plants. However, root Na ? extrusion became indifferent between pretreated and non-pretreated plants under salt stress after inhibiting plasma membrane (PM) Na ?

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Section: Discussionmentioning

confidence: 99%

Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake

Cao³

et al. 2015

Acta Physiol Plant

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“…Moreover, the higher quantum yield of PSI (ɸ PSI ) compared with that of PSII (ɸ PSII ) may favour the cyclic electron flow (CEF) around PSI. CEF may have a role in maintaining an adequate ∆pH for nonphotochemical quenching (NPQ), which could act as a protective mechanism in the case of both osmotic (Golding and Johnson 2003) and Na + ionic stress (Lu et al 2008). The ability to maintain better photosynthesis and consequently achieve higher growth and production/yield are based on these intensive protecting/regulating mechanisms during salt stress.…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic responses of a wheat (Asakaze)-barley (Manas) 7H addition line to salt stress

Szopkó¹,

Darkó²,

Molnár³

et al. 2017

Photosynt.

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The photosynthetic responses to salt stress were examined in a wheat (Triticum aestivum L. cv. Asakaze) -barley (Hordeum vulgare L. cv. Manas) 7H addition line having elevated salt tolerance as compared to the parental wheat genotype. For this purpose, increasing NaCl concentrations up to 300 mM were applied and followed by a 7-day recovery period. Up to moderate salt stress (200 mM NaCl), forcible stomatal closure, parallel with a reduction in the net assimilation rate (P N ), was only observed in wheat, but not in the addition line or barley. Since the photosynthetic electron transport processes of wheat were not affected by NaCl, the impairment in P N could largely be accounted for the saltinduced decline in stomatal conductance (g s ), accompanied by depressed intercellular CO 2 concentration and carboxylation efficiency. Both, P N and nonstomatal limitation factors (L ns ) were practically unaffected by moderate salt stress in barley and in the addition line due to the sustained g s , which might be an efficient strategy to maintain the efficient photosynthetic activity and biomass production. At 300mM NaCl, both P N and g s decreased significantly in all the genotypes, but the changes in P N and L ns in the 7H addition line were more favourable similar to those in wheat. The downregulation of photosynthetic electron transport processes around PSII, accompanied by increases in the quantum yield of regulated energy dissipation and of the donor side limitation of PSI without damage to PSII, was observed in the addition line and barley during severe stress. Incomplete recovery of P N was observed in the addition line as a result of declined PSII activity probably caused by enhanced cyclic electron flow around PSI. These results suggest that the better photosynthetic tolerance to moderate salt stress of barley can be manifested in the 7H addition line which may be a suitable candidate for improving salt tolerance of wheat.Additional key words: chlorophyll fluorescence induction; improved salt tolerance; leaf gas exchange; recovery; wheat-barley addition. ---Received 25 January 2016, accepted 5 May 2016. + Corresponding author; e-mail: ds@ektf.hu Abbreviations: 7H add -wheat-barley 7H addition line; CEF -cyclic electron flow around PSI; Ci -intercellular CO2 concentration; F -steady-state fluorescence; F0, Fm -minimum and maximum Chl fluorescence determined in the dark-adapted state; Fm' -maximal fluorescence in the light-adapted state; Fv -variable fluorescence; Fv/Fm -maximum quantum yield of PSII photochemistry; gs -stomatal conductance; Lns -nonstomatal limitation; Ls -stomatal limitation; NPQ -nonphotochemical quenching; P0 -minimal P700 signal; Pm -maximal P700 level; Pm' -maximal P700 signal in a given light state; PN -net assimilation rate; PNmax -maximal assimilation rate; RuBP -ribulose-1,5-bisphosphate; RWC -relative water content; ε -carboxylation efficiency; ɸCEF -quantum yield of cyclic electron flow around PSI; ɸNA -quantum yield of the acceptor side limitation of PSI; ɸND -quantum yield o...

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“…The post-irradiation transient increase of Chl fluorescence is thought to arise from the reduction of PQ by nicotinamide adenine dinucleotide phosphate (NADPH) or other electron donors accumulated in leaves under irradiation (Shikanai et al, 1998;Peltier and Cournac, 2002;Yang et al, 2007;Lu et al, 2008). In higher plants and cyanobacteria, these processes involve mainly cyclic electron flow around PSI (Peltier and Cournac, 2002;Deng et al, 2003;Munné-Bosch et al, 2005;Lu et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

“…In higher plants and cyanobacteria, these processes involve mainly cyclic electron flow around PSI (Peltier and Cournac, 2002;Deng et al, 2003;Munné-Bosch et al, 2005;Lu et al, 2008). Figs.4a and 4b illustrates the post-irradiation transient increase of Chl fluorescence in the control and treated plants.…”

Section: Resultsmentioning

confidence: 99%

“…AL intensities varied between 0 and 2000 μmol/(m 2 ·s), and the light-saturated pulses were administered at an interval of 60 s. The energy-dependent quenching (q E ) was calculated according to Jin et al(2008). The post-irradiation transient increase in Chl fluorescence was recorded according to Lu et al(2008) and Yang et al(2007) with some modifications. After dark-adaptation of the sample for 30 min, F o and F m were determined as described above.…”

Section: Measurements Of Gas Exchange and Chlorophyll Fluorescencementioning

confidence: 99%

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Cyclic electron flow around photosystem I is required for adaptation to high temperature in a subtropical forest tree, Ficus concinna

Jin

Wang

2009

J. Zhejiang Univ. Sci. B

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Dissipation mechanisms of excess photon energy under high-temperature stress were studied in a subtropical forest tree seedling, Ficus concinna. Net CO 2 assimilation rate decreased to 16% of the control after 20 d high-temperature stress, and thus the absorption of photon energy exceeded the energy required for CO 2 assimilation. The efficiency of excitation energy capture by open photosystem II (PSII) reaction centres (F v ′/F m ′) at moderate irradiance, photochemical quenching (q P ), and the quantum yield of PSII electron transport (Φ PSII ) were significantly lower after high-temperature stress. Nevertheless, non-photochemical quenching (q NP ) and energy-dependent quenching (q E ) were significantly higher under such conditions. The post-irradiation transient of chlorophyll (Chl) fluorescence significantly increased after the turnoff of the actinic light (AL), and this increase was considerably higher in the 39 °C-grown seedlings than in the 30 °C-grown ones. The increased post-irradiation fluorescence points to enhanced cyclic electron transport around PSI under high growth temperature conditions, thus helping to dissipate excess photon energy non-radiatively.

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Induction of cyclic electron flow around photosystem 1 and state transition are correlated with salt tolerance in soybean

Cited by 21 publications

References 40 publications

Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake

Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake

Photosynthetic responses of a wheat (Asakaze)-barley (Manas) 7H addition line to salt stress

Cyclic electron flow around photosystem I is required for adaptation to high temperature in a subtropical forest tree, Ficus concinna

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