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Dryad

Diploid and haploid assemblies and annotation of monoecious shrub willow (Salix purpurea), clone ID 94003

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Feb 13, 2023 version files 387.75 MB

Abstract

The Salicaceae are dioecious perennials that utilize different sex determination systems. There is substantial interest in understanding the impacts of hybridization, speciation, and polyploidy on sex chromosome evolution. Here, a rare monoecious S. purpurea genotype, 94003, was assembled. Based on sequence alignments to dioecious and monoecious genomes, a 1.15 Mb sex-linked region on Chr15W was identified as absent in monecious plants. Inheritance of this structural variation is responsible for the loss of a male-suppressing function in what would otherwise be genetic females, resulting in monoecy or lethality, if homozygous.