Characterisation of powdery mildew resistant lines derived from crosses between Triticum aestivum and Aegilops speltoides and Ae. mutica

Eser, Vehbi

doi:10.1007/978-94-011-4896-2_46

Cited by 5 publications

(6 citation statements)

References 5 publications

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“…Despite the ability to suppress the Ph1 locus in wheat, very little genetic or trait analysis has been undertaken to date on Am. muticum with the exception of some addition and substitution lines (Iefimenko et al ., ) and potential resistance against environmental stresses (Iefimenko et al ., ) and fungal diseases such as powdery mildew (Eser, ).…”

Section: Introductionmentioning

confidence: 99%

A step change in the transfer of interspecific variation into wheat from Amblyopyrum muticum

King

Grewal

Yang

et al. 2016

Plant Biotechnology Journal

113

170

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SummaryDespite some notable successes, only a fraction of the genetic variation available in wild relatives has been utilized to produce superior wheat varieties. This is as a direct result of the lack of availability of suitable high‐throughput technologies to detect wheat/wild relative introgressions when they occur. Here, we report on the use of a new SNP array to detect wheat/wild relative introgressions in backcross progenies derived from interspecific hexaploid wheat/Ambylopyrum muticum F1 hybrids. The array enabled the detection and characterization of 218 genomewide wheat/Am. muticum introgressions, that is a significant step change in the generation and detection of introgressions compared to previous work in the field. Furthermore, the frequency of introgressions detected was sufficiently high to enable the construction of seven linkage groups of the Am. muticum genome, thus enabling the syntenic relationship between the wild relative and hexaploid wheat to be determined. The importance of the genetic variation from Am. muticum introduced into wheat for the development of superior varieties is discussed.

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Section: Introductionmentioning

confidence: 99%

A step change in the transfer of interspecific variation into wheat from Amblyopyrum muticum

King

Grewal

Yang

et al. 2016

Plant Biotechnology Journal

113

170

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“…mutica chromosomes are rather rare. The only example thus far is that of Eser [1998] who developed isozyme markers for Ae. mutica to characterize a putative wheat-Ae.…”

Section: Discussionmentioning

confidence: 99%

“…mutica cross progenies but did not identify the chromosome compositions. Based on isozyme data, Eser [1998] developed 3 T. aestivum -Ae. mutica substitutions involving homoeologous group 7 chromosomes of Ae.…”

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confidence: 99%

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Molecular and Cytogenetic Characterization of a Powdery Mildew-Resistant Wheat-<b><i>Aegilops mutica</i></b> Partial Amphiploid and Addition Line

Liu

Li²,

Gong³

et al. 2015

Cytogenet Genome Res

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Aegilops mutica Boiss., a diploid species (2n = 2x = 14, TT), has been rarely studied before. In this research, a hexaploid wheat (cv. Chinese Spring)-Ae. mutica partial amphiploid and a wheat-Ae. mutica addition line were characterized by chromosome karyotyping, FISH using oligonucleotides Oligo-pTa535-1, Oligo-pSc119.2-1, and (GAA)₈ as probes, and EST-based molecular markers. The results showed that the partial amphiploid strain consisted of 20 pairs of wheat chromosomes and 7 pairs of Ae. mutica chromosomes, with both wheat 7B chromosomes missing. EST-based molecular marker data suggested that the wheat-Ae. mutica addition line carries the 7T chromosome. Resistance tests indicated that both the partial amphiploid and the 7T addition line were highly resistant to powdery mildew, whereas the wheat control line Chinese Spring was highly susceptible, indicating the presence of a potentially new powdery mildew resistance gene on the Ae. mutica 7T chromosome. The karyotype, FISH patterns, and molecular markers can now be used to identify Ae. mutica chromatin in a wheat background, and the 7T addition could be used as a new powdery mildew resistance source for wheat breeding.

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“…(Aegilops mutica Boiss. ), which is resistant to fungal diseases of wheat [6,7]. Genome substitution amphidiploid Aurotica with the AABBTT genome that unites the AABB tetracomponent of the winter wheat Aurora with TT genome of this Aegilops [8], was found during a 20 year observation to be resis tant not only to the agents of rust and powdery mildew, fusariosis, and septoriosis but also to winter stress fac tors.…”

Section: Introductionmentioning

confidence: 99%

Microsatellite analysis of chromosomes from the fifth homoeologous group in the introgressive Triticum aestivum/Amblyopyrum muticum wheat lines

et al. 2015

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Introgressive hybridization of common wheat has been and remains an efficient way for enriching its gene pool with resistance genes against environmental stress factors. In this aspect, T genome of the diploid species Amblyopyrum muticum (Boiss.) Eig. is believed to be prospective. The genome substitution amphidip loid Aurotica (AABBTT) with the A and B subgenomes from the common wheat cultivar Aurora and with the T subgenome from the indicated species is characterized by a high level of winter resistance. This trait is asso ciated in wheat with the chromosomes of the fifth homoeologous group. Using a comparative microsatellite analysis of Aurora and Aurotica DNAs, we identified nine SSR loci specific for the wheat D genome, whose primers produced different amplicons from Aurotica DNA. The latter were used in screening F 5 plants (Aurora × Aurotica) for the search of the specimens that carried the 5T chromosome or its fragments in their genomes. Among 234 plants, we detected 24 plants with disomic 5D/5T substitutions, which were the prog eny of five F 4 plants grown from two F 2 plants. A significant number of plants contained the recombinant 5D/5T chromosome. The recombination event could occur in any generation starting with F 2 .

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Characterisation of powdery mildew resistant lines derived from crosses between Triticum aestivum and Aegilops speltoides and Ae. mutica

Cited by 5 publications

References 5 publications

A step change in the transfer of interspecific variation into wheat from Amblyopyrum muticum

A step change in the transfer of interspecific variation into wheat from Amblyopyrum muticum

Molecular and Cytogenetic Characterization of a Powdery Mildew-Resistant Wheat-<b><i>Aegilops mutica</i></b> Partial Amphiploid and Addition Line

Microsatellite analysis of chromosomes from the fifth homoeologous group in the introgressive Triticum aestivum/Amblyopyrum muticum wheat lines

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