title: Genomics and the Contrasting Dynamics of Annual and Perennial Domestication.
abstract: Plant domestication modifies a wild species genetically for human use. Among thousands of domesticated plants, a major distinction is the difference between annual and perennial life cycles. The domestication of perennials is expected to follow different processes than annuals, with distinct genetic outcomes. Here we examine domestication from a population genetics perspective, with a focus on three issues: genetic bottlenecks during domestication, introgression as a source of local adaptation, and genetic load. These three issues have been studied nominally in major annual crops but even less extensively in perennials. Here we highlight lessons from annual plants, motivations to study these issues in perennial plants, and new approaches that may lead to further progress.
authors.affiliation: Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, CA 92697, USA. Electronic address: bgaut@uci.edu.
authors.forename: Brandon S
authors.initials: BS
authors.lastname: Gaut
authors.affiliation: Departamento de Agronomía, Universidad de Córdoba - Campus de Excelencia Internacional Agroalimentario ceiA3, Edificio C4, Campus de Rabanales, 14014 Córdoba, Spain.
authors.forename: Concepción M
authors.initials: CM
authors.lastname: Díez
authors.affiliation: Department of Agronomy and Plant Genetics, University of Minnesota, Saint Paul, MN 55108, USA.
authors.forename: Peter L
authors.initials: PL
authors.lastname: Morrell
mesh_terms: D000222:Adaptation, Physiological; D018745:Genome, Plant; D010944:Plants / Q000235:genetics*
keywords: clonal propagation; genetic bottleneck; genetic diversity; genetic load; introgression; somatic mutations