RRC ID |
56576
|
著者 |
Danilova TV, Akhunova AR, Akhunov ED, Friebe B, Gill BS.
|
タイトル |
Major structural genomic alterations can be associated with hybrid speciation in Aegilops markgrafii (Triticeae).
|
ジャーナル |
Plant J
|
Abstract |
During evolutionary history many grasses from the tribe Triticeae have undergone interspecific hybridization, resulting in allopolyploidy; whereas homoploid hybrid speciation was found only in rye. Homoeologous chromosomes within the Triticeae preserved cross-species macrocolinearity, except for a few species with rearranged genomes. Aegilops markgrafii, a diploid wild relative of wheat (2n = 2x = 14), has a highly asymmetrical karyotype that is indicative of chromosome rearrangements. Molecular cytogenetics and next-generation sequencing were used to explore the genome organization. Fluorescence in situ hybridization with a set of wheat cDNAs allowed the macrostructure and cross-genome homoeology of the Ae. markgrafii chromosomes to be established. Two chromosomes maintained colinearity, whereas the remaining were highly rearranged as a result of inversions and inter- and intrachromosomal translocations. We used sets of barley and wheat orthologous gene sequences to compare discrete parts of the Ae. markgrafii genome involved in the rearrangements. Analysis of sequence identity profiles and phylogenic relationships grouped chromosome blocks into two distinct clusters. Chromosome painting revealed the distribution of transposable elements and differentiated chromosome blocks into two groups consistent with the sequence analyses. These data suggest that introgressive hybridization accompanied by gross chromosome rearrangements might have had an impact on karyotype evolution and homoploid speciation in Ae. markgrafii.
|
巻・号 |
92(2)
|
ページ |
317-330
|
公開日 |
2017-10-1
|
DOI |
10.1111/tpj.13657
|
PMID |
28776783
|
MeSH |
Chromosomes, Plant / genetics
DNA Transposable Elements / genetics
Gene Rearrangement
Genetic Speciation*
Genome, Plant / genetics
Hordeum / genetics
Hybridization, Genetic / genetics*
In Situ Hybridization, Fluorescence
Karyotype
Phylogeny
Triticum / genetics*
|
IF |
5.726
|
引用数 |
26
|
リソース情報 |
コムギ |
AK333586
AK332649
AK335632
AK333892
tplb0048d21
tplb0006e16
tplb0013a02
tplb0029f23
tplb0009d14
AK331548
AK335165
tplb0014k07
AK333800
AK332092
tplb0016j06
tplb0017a11
tplb0007o12
tplb0012l12
AK330599
AK330434
tplb0043m19
tplb0006k18
AK332544
AK335371
tplb0048f21
tplb0006i15
AK335952
tplb0045d06
tplb0007l09
AK333292
tplb0009d14
tplb0004a16
tplb0032g07
tplb0016i05
AK331687
AK333482
AK333122
tplb0001g16
tplb0004j16
tplb0011e24
tplb0014n06
AK331068
tplb0016n13
tplb0028j15
tplb0007d03
AK336104
tplb0045e08
AK335612
tplb0015c23
tplb0034c14
tplb0054c18
tplb0003e22
tplb0017g02
tplb0001n09
tplb0043m19
tplb0013i03
tplb0014k23
AK330261
tplb0055e15
tplb0014b22
tplb0006a16
AK335837
tplb0010p16
tplb0011a04
tplb0033b21
AK335609
tplb0062n13
tplb0036c11
AK333066
AK333443
AK334556
tplb0018i03
tplb0027f03
tplb0016e11
tplb0006h03
tplb0056h22
AK332382
tplb0016l11
tplb0002p18
tplb0016k09
tplb0017c03
tplb0014l23
tplb0013i03
AK331808
AK334748
tplb0043p15
tplb0012m16
AK333652
AK331504
AK331719
AK334770
AK334749
tplb0050a13
tplb0006a09
tplb0010b12
tplb0016f22
tplb0032b21
tplb0015m04
tplb0057j24
AK330509
tplb0023j03
tplb0009a09
AK332071
AK332616
AK333606
tplb0012a20
AK333670
AK333540
AK332077
tplb0016o11
tplb0014h10
AK334573
AK331539
AK334739
tplb0015m05
AK333122
tplb0015e09
tplb0006n08
tplb0021a05
AK334430
AK331530
AK335638
AK330567
tplb0013b07
tplb0061d08
tplb0012d16
tplb0013g03
AK334938
tplb0009d14
tplb0013i03
tplb0015k07
tplb0007o14 |