title: Plant Evolution: Repeated Loss of Floral Scent - A Path of Least Resistance?
abstract: Two independent studies converge on similar causes for olfactory loss-of-function mutants in evolutionary transitions to scentless flowers. This molecular déjà vu may reflect selection to minimize negative pleiotropy in a complex biosynthetic pathway.
authors.affiliation: Department of Neurobiology and Behavior, Cornell University, Ithaca, NY 14853, USA. Electronic address: rar229@cornell.edu.
authors.forename: Robert A
authors.initials: RA
authors.lastname: Raguso
mesh_terms: D000818:Animals; D005075:Biological Evolution; D035264:Flowers / Q000502:physiology*; D018506:Gene Expression Regulation, Plant / Q000502:physiology; D009154:Mutation; D009812:Odorants; D018521:Plant Physiological Phenomena / Q000235:genetics; D010944:Plants / Q000235:genetics* / Q000378:metabolism*; D054817:Pollination; D012641:Selection, Genetic