ArticleMolecular genetics and genomics : MGG2007
A paracentric inversion suppresses genetic recombination at the FON3 locus with breakpoints corresponding to sequence gaps on rice chromosome 11L.
Article in Molecular genetics and genomics : MGG, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 20 citations in OpenAlex.
- Chromosomal inversion at the DG1 promoter drives double-grain spikelets and enhances grain yield in sorghum.Nature plants · 2025Article
- A chromosome-level reference genome facilitates the discovery of clubroot-resistant geneHorticulture research · 2025Article
- Characterization and fine mapping ofMolecular breeding : new strategies in plant improvement · 2024Article
- Molecular Mapping and Transfer of Quantitative Trait Loci (QTL) for Sheath Blight Resistance from Wild RiceGenes · 2024Article
- Two large inversions seriously suppress recombination and are essential for key genotype fixation in cabbage (Horticulture research · 2024Article
- Meiotic Chromosomal Abnormality Detected in a Heterozygote ofFrontiers in plant science · 2022Article
- Article
- An integrated analysis of QTL mapping and RNA sequencing provides further insights and promising candidates for pod number variation in rapeseed (Brassica napus L.).BMC genomics · 2017Article
- Molecular, genetic and evolutionary analysis of a paracentric inversion in Arabidopsis thaliana.The Plant journal : for cell and molecular biology · 2016Article
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Authors and funding
10 authors at 4 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Paracentric inversion is known to inhibit genetic recombination between normal and inverted chromosomal segments in heterozygous arrangements. Insect inversion polymorphisms have been studied to reveal adaptive processes for maintaining genetic variation. We report the first paracentric inversion in rice (Oryza sativa), which was discovered in our effort to clone the floral organ number gene FON3. Recombination at the FON3 locus on the long arm of chromosome 11 was severely suppressed over a distance of more than 36 cM. An extensive screening among 8,242 F(2) progeny failed to detect any recombinants. Cytological analysis revealed a loop-like structure on pachytene chromosomes, whereas FISH analysis showed the migration of a BAC clone from a distal location to a position closer to the centromere. Interestingly, the locations where the genetic recombination suppression began were coincided with the positions of two physical gaps on the chromosome 11, suggesting a correlation between the physical gaps, the inversion breakpoints. Transposons and retrotransposons, and tandemly arranged members of gene families were among the sequences immediately flanking the gaps. Taken together, we propose that the genetic suppression at the FON3 locus was caused by a paracentric inversion. The possible genetic mechanism causing such a spontaneous inversion was proposed.
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