TY - JOUR

T1 - New Insights into the Genomic Structure of Avena L.

T2 - Comparison of the Divergence of A-Genome and One C-Genome Oat Species

AU - Gnutikov, Alexander A.

AU - Nosov, Nikolai N.

AU - Loskutov, Igor G.

AU - Blinova, Elena V.

AU - Shneyer, Viktoria S.

AU - Probatova, Nina S.

AU - Rodionov, Alexander V.

N1 - Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2022/4/19

Y1 - 2022/4/19

N2 - We used next-generation sequencing analysis of the 3′-part of 18S rDNA, ITS1, and a 5′-part of the 5.8S rDNA region to understand genetic variation among seven diploid A-genome Avena species. We used 4–49 accessions per species that represented the As genome (A. atlantica, A. hirtula, and wiestii), Ac genome (A. canariensis), Ad genome (A. damascena), Al genome (A. longi-glumis), and Ap genome (A. prostrata). We also took into our analysis one C-genome species, A. clauda, which previously was found to be related to A-genome species. The sequences of 169 accessions revealed 156 haplotypes of which seven haplotypes were shared by two to five species. We found 16 ribotypes that consisted of a unique sequence with a characteristic pattern of single nucleotide polymorphisms and deletions. The number of ribotypes per species varied from one in A. longiglumis to four in A. wiestii. Although most ribotypes were species-specific, we found two ribotypes shared by three species (one for A. damascena, A. hirtula, and A. wiestii, and the second for A. longiglumis, A. atlantica, and A. wiestii), and a third ribotype shared between A. atlantica and A. wiestii. A characteristic feature of the A. clauda ribotype, a diploid C-genome species, is that two different families of ribotypes have been found in this species. Some of these ribotypes are characteristic of Cc-genome species, whereas others are closely related to As-genome ribotypes. This means that A. clauda can be a hybrid between As-and C-genome oats.

AB - We used next-generation sequencing analysis of the 3′-part of 18S rDNA, ITS1, and a 5′-part of the 5.8S rDNA region to understand genetic variation among seven diploid A-genome Avena species. We used 4–49 accessions per species that represented the As genome (A. atlantica, A. hirtula, and wiestii), Ac genome (A. canariensis), Ad genome (A. damascena), Al genome (A. longi-glumis), and Ap genome (A. prostrata). We also took into our analysis one C-genome species, A. clauda, which previously was found to be related to A-genome species. The sequences of 169 accessions revealed 156 haplotypes of which seven haplotypes were shared by two to five species. We found 16 ribotypes that consisted of a unique sequence with a characteristic pattern of single nucleotide polymorphisms and deletions. The number of ribotypes per species varied from one in A. longiglumis to four in A. wiestii. Although most ribotypes were species-specific, we found two ribotypes shared by three species (one for A. damascena, A. hirtula, and A. wiestii, and the second for A. longiglumis, A. atlantica, and A. wiestii), and a third ribotype shared between A. atlantica and A. wiestii. A characteristic feature of the A. clauda ribotype, a diploid C-genome species, is that two different families of ribotypes have been found in this species. Some of these ribotypes are characteristic of Cc-genome species, whereas others are closely related to As-genome ribotypes. This means that A. clauda can be a hybrid between As-and C-genome oats.

KW - grasses

KW - hybridization

KW - molecular phylogeny

KW - next-generation sequencing

KW - rDNA

KW - rRNA genes

UR - http://www.scopus.com/inward/record.url?scp=85128458885&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/2ca30983-5b93-350d-b68b-eb03ddc54002/

U2 - 10.3390/plants11091103

DO - 10.3390/plants11091103

M3 - Article

C2 - 35567104

AN - SCOPUS:85128458885

VL - 11

JO - Plants

JF - Plants

SN - 2223-7747

IS - 9

M1 - 1103

ER -