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Wiley, The Plant Journal, 2(88), p. 159-178, 2016

DOI: 10.1111/tpj.13262

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Molecular, genetic and evolutionary analysis of a paracentric inversion in Arabidopsis thaliana

Journal article published in 2016 by Paul Fransz, Gabriella Linc, Cheng‐Ruei-R. Lee, Lee Cr, Saulo Alves Aflitos, P. van Dam ORCID, Jesse R. Lasky, Christopher Toomajian, Aflitos Sa, Hoda Ali, Lasky Jr, Janny Peters ORCID, A. Hoda, H. de Jong, Xianwen Ji and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Chromosomal inversions can provide windows onto the cytogenetic, molecular, evolutionary and demographic histories of a species. Here we investigate a paracentric 1.17-Mb inversion on chromosome 4 of Arabidopsis thaliana with nucleotide precision of its borders. The inversion is created by Vandal transposon activity, splitting an F-box and relocating a pericentric heterochromatin segment in juxtaposition with euchromatin without affecting the epigenetic landscape. Examination of the RegMap panel and the 1001 Arabidopsis genomes revealed more than 170 inversion accessions in Europe and North America. The SNP patterns revealed historical recombinations from which we infer diverse haplotype patterns, ancient introgression events and phylogenetic relationships. We find a robust association between the inversion and fecundity under drought. We also find linkage disequilibrium between the inverted region and the early flowering Col-FRIGIDA allele. Finally, SNP analysis elucidates the origin of the inversion to South-Eastern Europe approximately 5000 years ago and the FRI-Col allele to North-West Europe, and reveals the spreading of a single haplotype to North America during the 17th to 19th century. The 'American haplotype' was identified from several European localities, potentially due to return migration.