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Zhang, P.; Friebe, Bernd; Gill, Bikram S.

doi:10.1007/s00606-002-0224-y

Cited by 26 publications

(3 citation statements)

References 55 publications

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“…vavilovii is related to the S * -genome of Emarginata group. Data collected by molecular methods (Zhang and Dvorák, 1992), C-banding and FISH analyses (Badaeva et al, 2002; Zhang et al, 2002) confirmed, that Ae. vavilovii contains the S v -genome that could probably derive from Ae.…”

Section: Introductionmentioning

confidence: 80%

“…From another side, the S-genomes were extensively examined by FISH with various DNA probes (Yamamoto, 1992a; Badaeva et al, 1996a,b, 2002, 2004; Belyayev et al, 2001; Zhang et al, 2002; Giorgi et al, 2003; Salina et al, 2006b, 2009; Raskina et al, 2011; Ruban et al, 2014; Molnár et al, 2016; Zhao et al, 2016). Probe pSc119.2 was used most frequently (Badaeva et al, 1996a, 2002, 2004; Molnár et al, 2016; Zhao et al, 2016), however, the pSc119.2 signals are located predominantly in subtelomeric chromosome regions, thus hindering unequivocal chromosome identification.…”

Section: Introductionmentioning

confidence: 99%

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Evolution of the S-Genomes in Triticum-Aegilops Alliance: Evidences From Chromosome Analysis

Ruban

Бадаева

2018

Front. Plant Sci.

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Five diploid Aegilops species of the Sitopsis section: Ae. speltoides, Ae. longissima, Ae. sharonensis, Ae. searsii, and Ae. bicornis, two tetraploid species Ae. peregrina (= Ae. variabilis) and Ae. kotschyi (Aegilops section) and hexaploid Ae. vavilovii (Vertebrata section) carry the S-genomes. The B- and G-genomes of polyploid wheat are also the derivatives of the S-genome. Evolution of the S-genome species was studied using Giemsa C-banding and fluorescence in situ hybridization (FISH) with DNA probes representing 5S (pTa794) and 18S-5.8S-26S (pTa71) rDNAs as well as nine tandem repeats: pSc119.2, pAesp_SAT86, Spelt-1, Spelt-52, pAs1, pTa-535, and pTa-s53. To correlate the C-banding and FISH patterns we used the microsatellites (CTT)10 and (GTT)9, which are major components of the C-banding positive heterochromatin in wheat. According to the results obtained, diploid species split into two groups corresponding to Emarginata and Truncata sub-sections, which differ in the C-banding patterns, distribution of rDNA and other repeats. The B- and G-genomes of polyploid wheat are most closely related to the S-genome of Ae. speltoides. The genomes of allopolyploid wheat have been evolved as a result of different species-specific chromosome translocations, sequence amplification, elimination and re-patterning of repetitive DNA sequences. These events occurred independently in different wheat species and in Ae. speltoides. The 5S rDNA locus of chromosome 1S was probably lost in ancient Ae. speltoides prior to formation of Timopheevii wheat, but after the emergence of ancient emmer. Evolution of Emarginata species was associated with an increase of C-banding and (CTT)10-positive heterochromatin, amplification of Spelt-52, re-pattering of the pAesp_SAT86, and a gradual decrease in the amount of the D-genome-specific repeats pAs1, pTa-535, and pTa-s53. The emergence of Ae. peregrina and Ae. kotschyi did not lead to significant changes of the S*-genomes. However, partial elimination of 45S rDNA repeats from 5S* and 6S* chromosomes and alterations of C-banding and FISH-patterns have been detected. Similarity of the Sv-genome of Ae. vavilovii with the Ss genome of diploid Ae. searsii confirmed the origin of this hexaploid. A model of the S-genome evolution is suggested.

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Section: Introductionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Evolution of the S-Genomes in Triticum-Aegilops Alliance: Evidences From Chromosome Analysis

Ruban

Бадаева

2018

Front. Plant Sci.

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“…1(d)] as representative examples. Non-convex selfpropelled colloids were recently realized in experiments by Kümmel et al [19], and non-convex shapes can also be found in various bacteria [21,26], see Fig. 1(d), but their collective behavior has not yet been systematically investigated.…”

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confidence: 99%

Controlling active self-assembly through broken particle-shape symmetry

et al. 2014

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Many structural properties of conventional passive materials are known to arise from the symmetries of their microscopic constituents. By contrast, it is largely unclear how the interplay between particle shape and self-propulsion controls the meso- and macroscale behavior of active matter. Here we use large-scale simulations of homo- and heterogeneous self-propelled particle systems to identify generic effects of broken particle-shape symmetry on collective motion. We find that even small violations of fore-aft symmetry lead to fundamentally different collective behaviors, which may facilitate demixing of differently shaped species as well as the spontaneous formation of stable microrotors. These results suggest that variation of particle shape yields robust physical mechanisms to control self-assembly of active matter, with possibly profound implications for biology and materials design.

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