Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)
Published: Oct. 4, 2024
Language: Английский
PLANT PHYSIOLOGY, Journal Year: 2025, Volume and Issue: 197(2)
Published: Feb. 1, 2025
Language: Английский
Citations
0
Critical Reviews in Plant Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 33
Published: March 31, 2025
Language: Английский
Citations
0
Plant Reproduction, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 27, 2024
Language: Английский
Citations
1
PLANT PHYSIOLOGY, Journal Year: 2024, Volume and Issue: 197(1)
Published: Dec. 23, 2024
Abstract Heat interferes with multiple meiotic processes, leading to genome instability and sterility in flowering plants, including many crops. Despite its importance for food security, the mechanisms underlying heat tolerance of meiosis are poorly understood. In this study, we analyzed different processes Arabidopsis (Arabidopsis thaliana) accessions Col Ler, their F1 hybrids, F2 offspring under stress (37 °C). At 37 °C, exhibits significantly reduced formation double-strand breaks completely abolished homolog pairing, synapsis, crossover (CO) formation. Strikingly, Ler Col/Ler hybrids exhibit normal CO show mildly impacted pairing synapsis. Interestingly, only 10% 20% behave as revealing that recombination is genetically controlled by several loci. Moreover, defects chromosome morphology integrity sister chromatid segregation, levels which exceed those either inbreds or thus implying a transgressive effect on meiosis. Furthermore, correlation cytogenetic analyses suggest synapsis have an impact stability at postrecombination stages. This study reveals natural resilience factors Arabidopsis, great potential be exploited breeding programs.
Language: Английский
Citations
1
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: July 19, 2024
Abstract Heat interferes with multiple meiotic processes leading to genome instability and sterility in flowering plants, including many crops. Despite its importance for food security, the mechanisms underlying heat tolerance of meiosis are poorly understood. In this study, we analyzed different Arabidopsis ( thaliana ) accessions Columbia (Col) Landsberg erecta (L er ), their F1 hybrids F2 offspring under stress (37°C). At 37°C, Col exhibits significantly reduced formation double-stand breaks (DSBs) completely abolished homolog pairing, synapsis crossover (CO) formation. Strikingly, L /Col much less affected than Col. Interestingly, only 10% ∼ 20% exhibit same recombination as parents, indicating that resilience is controlled by interplay several loci. Moreover, show defective chromosome condensation interkinesis, untimely sister-chromatid segregation and/or fragmentation, levels which exceed those either inbreds thus implying a transgressive effect on meiosis. Furthermore, correlation cytogenetic analysis suggest pairing have an impact morphology stability during post-recombination stages stress. Taken together, study reveals existence natural factors Arabidopsis, great potential be exploited breeding programs. Author summary Environmental temperature alterations affect perturbing genetic makeup plants. We previously reported CO fully accession (36°C-38°C) due DSB impaired pairing. Here, high conditions, both occur normally, mildly impacted, indicate striking difference from Remarkably, Col/L display , however, behave parents. found higher defects integrity, population hybrids, influencing Our findings reveal genomic loci, holding crop breeding.
Language: Английский
Citations
0
Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)
Published: Oct. 4, 2024
Language: Английский
Citations
0