| Autor: |
Nataliya E Yelina, Daniel Holland, Sabrina Gonzalez-Jorge, Dominique Hirsz, Ziyi Yang, Ian R Henderson |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
G3: Genes, Genomes, Genetics, Vol 12, Iss 7 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2160-1836 |
| DOI: |
10.1093/g3journal/jkac105 |
| Popis: |
AbstractDuring meiosis, homologous chromosomes pair and recombine, which can result in reciprocal crossovers that increase genetic diversity. Crossovers are unevenly distributed along eukaryote chromosomes and show repression in heterochromatin and the centromeres. Within the chromosome arms, crossovers are often concentrated in hotspots, which are typically in the kilobase range. The uneven distribution of crossovers along chromosomes, together with their low number per meiosis, creates a limitation during crop breeding, where recombination can be beneficial. Therefore, targeting crossovers to specific genome locations has the potential to accelerate crop improvement. In plants, meiotic crossovers are initiated by DNA double-strand breaks that are catalyzed by SPO11 complexes, which consist of 2 catalytic (SPO11-1 and SPO11-2) and 2 noncatalytic subunits (MTOPVIB). We used the model plant Arabidopsis thaliana3a3a |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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