Influence of D genome of wheat on expression of novel type spike branching in hybrid populations of 171ACS line

Alieva, A. J.; Aminov, N. Kh.

doi:10.1134/s1022795413110021

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…This trait was more severe in tillers (data not shown) than in the main spike, but the 'extra' florets in these spikelets did not produce grains. The sham ramification trait has been mapped to chromosome 5AL, in a similar position to Q, and has been shown to be repressed by the presence of the D genome in some backgrounds (Alieva and Aminov, 2013;Amagai et al, 2014). In the absence of a D genome, sham ramification and extra florets were observed in tetraploid wheat lines with loss-of-function alleles of Q and in lines overexpressing miR172 (Debernardi et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

New alleles of the wheat domestication geneQreveal multiple roles in growth and reproductive development

et al. 2017

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The advantages of free threshing in wheat led to the selection of the domesticated allele, which is now present in almost all modern wheat varieties. and the pre-domestication allele, , encode an AP2 transcription factor, with the domesticated allele conferring a free-threshing character and a subcompact (i.e. partially compact) inflorescence (spike). We demonstrate that mutations in the miR172 binding site of the gene are sufficient to increase transcript levels via a reduction in miRNA-dependent degradation, consistent with the conclusion that a single nucleotide polymorphism in the miRNA binding site of relative to was essential in defining the modern allele. We describe novel gain- and loss-of-function alleles of and use these to define new roles for this gene in spike development. is required for the suppression of 'sham ramification', and increased Q expression can lead to the formation of ectopic florets and spikelets (specialized inflorescence branches that bear florets and grains), resulting in a deviation from the canonical spike and spikelet structures of domesticated wheat.

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Section: Resultsmentioning

confidence: 99%

New alleles of the wheat domestication geneQreveal multiple roles in growth and reproductive development

et al. 2017

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“…Alieva and Aminov [ 10 ] suggested that the presence of the D subgenome suppresses the manifestation of the vaviloid branching of a spike because this trait appeared only in hybrid plants that do not carry the D subgenome, although the specific chromosomes of subgenome D involved in this trait have not been identified. Dobrovolskaya et al [ 1 ] previously showed particular importance of the WFZP-D gene localized on the 2DS chromosome in the regulation of wheat spike development and the emergence of forms with a branched spike.…”

Section: Discussionmentioning

confidence: 99%

“…et Schachm (2n = 4x = 28, BBAA) [ 8 ]. Aliyeva and Aminov [ 9 , 10 ] found that forms with a vaviloid type of spike branching can occur as a result of distant hybridization, and they showed that the spike branching of the vaviloid type (sham ramification) in hybrid wheat Line 166-Schakheli (2n = 4x = 28, BBAA) was controlled by one recessive gene [ 9 ]. Amagai [ 8 ] localized the sham ramification 1 ( shr1 ) gene of T. jakubzineri on the long arm of chromosome 5A in a similar position to gene Q , which is considered one of the main genes of wheat domestication.…”

Section: Introductionmentioning

confidence: 99%

Genetic Features of Triticale–Wheat Hybrids with Vaviloid-Type Spike Branching

Адонина

Shcherban

Zorina

et al. 2021

Plants

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Vaviloid spike branching, also called sham ramification, is a typical trait of Triticum vavilovii Jakubz. and is characterized by a lengthening of the spikelet axis. In this article, we present the results of a study of three triticale–wheat hybrid lines with differences in terms of the manifestation of the vaviloid spike branching. Lines were obtained by crossing triticale with hexaploid wheat, T. aestivum var. velutinum. The parental triticale is a hybrid of synthetic wheat (T. durum × Ae. tauschii var. meyrei) with rye, S. cereale ssp. segetale. Line 857 has a karyotype corresponding to hexaploid wheat and has a spike morphology closest to normal, whereas Lines 808/1 and 844/4 are characterized by the greatest manifestation of vaviloid spike branching. In Lines 808/1 and 844/4, we found the substitution 2RL(2DL). The karyotypes of the latter lines differ in that a pair of telocentric chromosomes 2DS is detected in Line 808/1, and these telocentrics are fused into one unpaired chromosome in Line 844/4. Using molecular genetic analysis, we found a deletion of the wheat domestication gene Q located on 5AL in the three studied hybrid lines. The deletion is local since an analysis of the adjacent gene B1 showed the presence of this gene. We assume that the manifestation of vaviloid spike branching in two lines (808/1 and 844/4) is associated with a disturbance in the joint action of genes Q and AP2L2-2D, which is another important gene that determines spike morphology and is located on 2DL.

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Microsatellite mapping of the gene for sham ramification in spikelets derived from a hexaploid wheat (Triticum spp.) accession 171ACS

Amagai

Aliyeva

Aminov

et al. 2015

Genet Resour Crop Evol

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Influence of D genome of wheat on expression of novel type spike branching in hybrid populations of 171ACS line

Cited by 6 publications

References 7 publications

New alleles of the wheat domestication geneQreveal multiple roles in growth and reproductive development

New alleles of the wheat domestication geneQreveal multiple roles in growth and reproductive development

Genetic Features of Triticale–Wheat Hybrids with Vaviloid-Type Spike Branching

Microsatellite mapping of the gene for sham ramification in spikelets derived from a hexaploid wheat (Triticum spp.) accession 171ACS

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