Homoeologous exchanges occur through intragenic recombination generating novel transcripts and proteins in wheat and other polyploids

Z Zhang, X Gou, H Xun, Y Bian, X Ma… - Proceedings of the …, 2020 - National Acad Sciences
Recombination between homeologous chromosomes, also known as homeologous
exchange (HE), plays a significant role in shaping genome structure and gene expression in …

Distal bias of meiotic crossovers in hexaploid bread wheat reflects spatio-temporal asymmetry of the meiotic program

K Osman, U Algopishi, JD Higgins… - Frontiers in Plant …, 2021 - frontiersin.org
Meiotic recombination generates genetic variation and provides physical links between
homologous chromosomes (crossovers) essential for accurate segregation. In cereals the …

High-resolution mapping of crossover events in the hexaploid wheat genome suggests a universal recombination mechanism

B Darrier, H Rimbert, F Balfourier, L Pingault… - Genetics, 2017 - academic.oup.com
During meiosis, crossovers (COs) create new allele associations by reciprocal exchange of
DNA. In bread wheat (Triticum aestivum L.), COs are mostly limited to subtelomeric regions …

Transcriptome asymmetry in synthetic and natural allotetraploid wheats, revealed by RNA‐sequencing

X Wang, H Zhang, Y Li, Z Zhang, L Li, B Liu - New Phytologist, 2016 - Wiley Online Library
Allopolyploidization has occurred frequently within the Triticum–Aegilops complex which
provides a suitable system to investigate how allopolyploidization shapes the expression …

Analysis of the recombination landscape of hexaploid bread wheat reveals genes controlling recombination and gene conversion frequency

LJ Gardiner, LU Wingen, P Bailey, R Joynson… - Genome Biology, 2019 - Springer
Background Sequence exchange between homologous chromosomes through crossing
over and gene conversion is highly conserved among eukaryotes, contributing to genome …

Meiotic homoeologous recombination‐based alien gene introgression in the genomics era of wheat

W Zhang, Y Cao, M Zhang, X Zhu, S Ren, Y Long… - Crop …, 2017 - Wiley Online Library
Wheat (Triticum spp.) has a narrow genetic basis due to its allopolyploid origin. However,
wheat has numerous wild relatives usable for expanding genetic variability of its genome …

Genome shock in a synthetic allotetraploid wheat invokes subgenome-partitioned gene regulation, meiotic instability, and karyotype variation

Y Sha, Y Li, D Zhang, R Lv, H Wang… - Journal of …, 2023 - academic.oup.com
It is becoming increasingly evident that interspecific hybridization at the homoploid level or
coupled with whole-genome duplication (ie allopolyploidization) has played a major role in …

MutS homologue 4 and MutS homologue 5 Maintain the Obligate Crossover in Wheat Despite Stepwise Gene Loss following Polyploidization

SD Desjardins, DE Ogle, MA Ayoub… - Plant …, 2020 - academic.oup.com
Crossovers (COs) ensure accurate chromosome segregation during meiosis while creating
novel allelic combinations. Here, we show that allotetraploid (AABB) durum wheat (Triticum …

Homology-mediated inter-chromosomal interactions in hexaploid wheat lead to specific subgenome territories following polyploidization and introgression

J Jia, Y Xie, J Cheng, C Kong, M Wang, L Gao, F Zhao… - Genome Biology, 2021 - Springer
Background Polyploidization and introgression are major events driving plant genome
evolution and influencing crop breeding. However, the mechanisms underlying the higher …

Homoeologous recombination in the presence of Ph1 gene in wheat

DH Koo, W Liu, B Friebe, BS Gill - Chromosoma, 2017 - Springer
A crossover (CO) and its cytological signature, the chiasma, are major features of eukaryotic
meiosis. The formation of at least one CO/chiasma between homologous chromosome pairs …