Salt stress response of wheat–barley addition lines carrying chromosomes from the winter barley “Manas”

Darkó, Éva; Janda, Tibor; Majláth, Imre; Szopkó, Dóra; Dulai, Sándor; Molnár, István; Türkösi, Edina; Molnár-Láng, Márta

doi:10.1007/s10681-014-1245-7

Cited by 26 publications

(34 citation statements)

References 38 publications

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“…without or with 500 mM NaCl, respectively). These results are in accordance with earlier findings where comparative analysis revealed that salt-tolerant genotypes are characterised by higher osmotic adjustment ability (Darko et al, 2015).…”

Section: Discussionsupporting

confidence: 93%

“…Changes in Na + uptake or transport processes are among the mechanisms which may contribute to better salt tolerance in cereals (Saqib et al, 2011;Darko et al, 2015). In the present experiments, there was no difference in the leaf Na content of salt-acclimated and non-acclimated plants after exposure to high NaCl, indicating that salt acclimation did not significantly modify Na transport to the shoots, and suggesting that, under these experimental conditions, protective mechanisms other than altered Na transport to the leaves must be responsible for the reduced level of damage symptoms in the salt-acclimated plants.…”

Section: Discussionmentioning

confidence: 99%

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Salt acclimation processes in wheat

Janda

Darkó

Shehata

et al. 2016

Plant Physiology and Biochemistry

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Young wheat plants (Triticum aestivum L. cv. Mv Béres) were exposed to 0 or 25 mM NaCl for 11 days (salt acclimation). Thereafter the plants were irrigated with 500 mM NaCl for 5 days (salt stress). Irrigating the plants with a low concentration of NaCl successfully led to a reduction in chlorotic symptoms and in the impairment of the photosynthetic processes when the plants were exposed to subsequent high-dose salt treatment. After exposure to a high concentration of NaCl there was no difference in leaf Na content between the salt-acclimated and non-acclimated plants, indicating that salt acclimation did not significantly modify Na transport to the shoots. While the polyamine level was lower in salt-treated plants than in the 2 control, salt acclimation led to increased osmotic potential in the leaves. Similarly, the activities of certain antioxidant enzymes, namely glutathione reductase, catalase and ascorbate peroxidase, were significantly higher in salt-acclimated plants. The results also suggest that while SOS1, SOS2 or NHX2 do not play a decisive role in the salt acclimation processes in young wheat plants; another stress-related gene, WALI6, may contribute to the success of the salt acclimation processes. The present study suggested that the responses of wheat plants to acclimation with low level of salt and to treatment with high doses of salt may be fundamentally different.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Salt acclimation processes in wheat

Janda

Darkó

Shehata

et al. 2016

Plant Physiology and Biochemistry

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“…Manas cultivars in order to increase the allelic variation of wheat (Molnár-Láng et al 2012). It has recently been reported by Darkó et al (2015), that among the added barley chromosomes tested (2H, 3H, 4H, 6H, 7H), the 7H addition line has elevated salt tolerance as compared to the wheat parent, and that the salt tolerance of the 7H addition line is associated with elevated osmotic adjustment capacity, similar to that found in Manas. However, except for a short preliminary study showing that increasing salt concentrations caused a less pronounced decline in net photosynthesis in the wheat (Asakaze)barley (Manas) 7H addition line (7H add) than in the parental variety Asakaze (Dulai et al 2010), the photosynthetic responses of this line, focusing to the role of photoprotective mechanisms and electron transport processes connected to PSII and PSI under salt treatment have not yet been studied in detail.…”

Section: Introductionsupporting

confidence: 54%

“…These results show that Manas and the 7H add were able to maintain their water status at a level similar to that of Asakaze without intense stomatal closure. This suggests that an efficient osmoregulation mechanism exists in these genotypes, as also demonstrated by Darkó et al (2015). Teulat et al (1998) also suggested that the 7H homoeologous chromosome played a role in osmotic adjustment in barley.…”

Section: Discussionmentioning

confidence: 65%

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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“…Hordeum marinum (2n = 14) is a diploid form of Hordeum genus with a basic chromosome number of x = 7 and four major groups H, I, X and Y. The long arm of chromosome 7H may be responsible for the improved salt tolerance (Darko et al 2015).…”

Section: Introductionmentioning

confidence: 99%

The proteome response of “Hordeum marinum” to long-term salinity stress

Boustani

Fatehi

Azizinezhad

2017

Cereal Research Communications

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Salinity is a major constraint to crop productivity and mechanisms of plant responses to salinity stress are extremely complex. "Hordeum marinum" is a salt tolerant barley species, which could be a good source to evaluate salt-tolerance patterns. Proteomics is a powerful technique to identify proteins involved in plant adaptation to stresses. We applied a proteomic approach to better understanding the mechanism of plant responses to salinity in a salt-tolerant genotype of barley. At the 4-leaf stage, plants were exposed to 0 (control treatment) or 300 mM NaCl (salt treatment). Salt treatment was maintained for 3 weeks. Total proteins of leaf 4 were extracted and separated by two-dimensional gel electrophoresis. More than 290 protein spots were reproducibly detected. Of these, 20 spots showed significant changes to salt treatment compared to the control: 19 spots were upregulated and 1 spot was absent. Using MALDI-TOF/TOF MS, we identified 20 cellular proteins which represented 11 different proteins and were classified into five categories. These proteins were involved in various cellular functions. Upregulation of proteins which involved in protein processing (ribosomal protein, cullin family, cp31AHv protein and RNA recognition motif (RRM) superfamily), photosynthesis (Ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco) and Ribulose bisphosphate carboxylase/oxygenase activase (rubisco activase)), energy metabolism (cytosolic malate dehydrogenase (cyMDH) and fructokinase), oxygen species scavenging and defense (cystatin and thioredoxin) may increase plant adaptation to salt stress.

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Salt stress response of wheat–barley addition lines carrying chromosomes from the winter barley “Manas”

Cited by 26 publications

References 38 publications

Salt acclimation processes in wheat

Salt acclimation processes in wheat

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

The proteome response of “Hordeum marinum” to long-term salinity stress

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