Identification and phenotypic description of new wheat – six-rowed winter barley disomic additions

Molnár-Láng, Márta; Kruppa, Klaúdia; Cseh, András; Bucsi, Julianna; Linc, Gabriella

doi:10.1139/g2012-013

Cited by 26 publications

(29 citation statements)

References 30 publications

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“…Asakaze and barley cv. 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.…”

Section: Introductionsupporting

confidence: 58%

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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Section: Introductionsupporting

confidence: 58%

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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“…Asakaze and barley cv. Manas (Molnár-Láng et al 2012) in order to increase the allelic variation in the introgression lines. In this way, a set of disomic addition lines (2H, 3H, 4H, 6H and 7H) and several ditelosomic lines (3HS and 7HL) of Asakaze-Manas were produced (Molnár-Láng et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Manas (Molnár-Láng et al 2012) in order to increase the allelic variation in the introgression lines. In this way, a set of disomic addition lines (2H, 3H, 4H, 6H and 7H) and several ditelosomic lines (3HS and 7HL) of Asakaze-Manas were produced (Molnár-Láng et al 2012). Their saltstress responses have not yet been characterized, but an earlier preliminary study showed that increasing salt concentrations caused a less pronounced decline in net photosynthesis in the Asakaze-Manas 7H addition line than in the parental variety Asakaze, suggesting that this line might be a good candidate for improving the salt tolerance of wheat (Dulai et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2014

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The salt stress responses of wheat-barley addition lines (2H, 3H, 3HS, 4H, 6H, 7H and 7HL) were compared to those of the parental genotypes wheat cv. Asakaze and barley cv. Manas and two other wheat genotypes [Chinese Spring (CS) and Mv9kr1] during germination and in young plants grown in hydroponic culture with or without salt treatment. Among the wheat genotypes frequently used for interspecific hybridization, Asakaze possesses relatively high salt tolerance, as indicated by the less pronounced reduction in germination % and in root and shoot growth and the retention of high leaf water content and photosynthetic activity, as compared to CS and Mv9kr1. The barley cv. Manas showed better salt tolerance than wheat cv. Asakaze, although Manas accumulated more Na in the root, but its transport to the shoots is restricted. Among the addition lines tested, the disomic addition line 7H and ditelosomic line 7HL exhibited higher salt tolerance both during germination and in the early developmental stages than the wheat parent, which may be related to the elevated osmotic adjustment capacity of these addition lines, similar to that found for barley cv. Manas. The paper also discusses the effects of other chromosomes on the salt stress response.

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“…Wheat-barley disomic addition lines (2H, 3H, 4H, 6HS, 7H, 1HS isochromosome) were produced and identified using molecular cytogenetic methods from hybrids between winter wheat line Mv9kr1 and the German two-rowed winter barley Igri Molnár-Láng 2007, 2010). In order to increase the allelic variation in wheat/barley introgressions, new wheat/barley disomic addition lines were developed containing the 2H, 3H, 4H, 6H and 7H chromosomes of the six-rowed Ukrainian winter barley cultivar Manas (Molnár-Láng et al 2012). This cultivar is agronomically much better adapted to Central European environmental conditions than the two-rowed spring barley cultivar Betzes previously used.…”

Section: Introductionmentioning

confidence: 99%

“…The wheat-barley addition lines produced in various cultivar combinations (CS 9 Betzes, Mv9 kr1 9 Igri, Asakaze 9 Manas) had several morphological traits in common (Molnár-Láng et al 2012). The 4H additions had the best fertility and 7H the lowest in all three combinations.…”

Section: Characterization and Exploitation Of Wheat-barley Introgressmentioning

confidence: 99%

Wheat–barley hybridization: the last 40 years

2013

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Several useful alien gene transfers have been reported from related species into wheat (Triticum aestivum), but very few publications have dealt with the development of wheat/barley (Hordeum vulgare) introgression lines. An overview is given here of wheat 9 barley hybridization over the last forty years, including the development of wheat 9 barley hybrids, and of addition and translocation lines with various barley cultivars. A short summary is also given of the wheat 9 barley hybrids produced with other Hordeum species. The meiotic pairing behaviour of wheat 9 barley hybrids is presented, with special regard to the detection of wheatbarley homoeologous pairing using the molecular cytogenetic technique GISH. The effect of in vitro multiplication on the genome composition of intergeneric hybrids is discussed, and the production and characterization of the latest wheat/barley translocation lines are presented. An overview of the agronomical traits (b-glucan content, earliness, salt tolerance, sprouting resistance, etc.) of the newly developed introgression lines is given. The exploitation and possible use of wheat/barley introgression lines for the most up-to-date molecular genetic studies (transcriptome analysis, sequencing of flow-sorted chromosomes) are also discussed.

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Identification and phenotypic description of new wheat – six-rowed winter barley disomic additions

Cited by 26 publications

References 30 publications

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

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

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

Wheat–barley hybridization: the last 40 years

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