Introgression of crop alleles into wild or weedy populations

Norman C. Ellstrand, Patrick Meirmans, Jun Rong, Detlef Bartsch, Atiyo Ghosh, Tom J. De Jong, Patsy Haccou, Bao Rong Lu, Allison A. Snow, C. Neal Stewart, Jared L. Strasburg, Peter H. Van Tienderen, Klaas Vrieling, Danny Hooftman

Research output: Contribution to journalReview articlepeer-review

124 Scopus citations

Abstract

The evolutionary significance of introgression has been discussed for decades. Questions about potential impacts of transgene flow into wild and weedy populations brought renewed attention to the introgression of crop alleles into those populations. In the past two decades, the field has advanced with considerable descriptive, experimental, and theoretical activity on the dynamics of crop gene introgression and its consequences. As illustrated by five case studies employing an array of different approaches, introgression of crop alleles has occurred for a wide array of species, sometimes without significant consequence, but on occasion leading to the evolution of increased weediness. A new theoretical context has emerged for analyzing empirical data, identifying factors that influence introgression, and predicting introgression's progress. With emerging molecular techniques and analyses, research on crop allele introgression into wild and weedy populations is positioned to make contributions to both transgene risk assessment and reticulate evolution. ©

Original languageEnglish (US)
Pages (from-to)325-345
Number of pages21
JournalAnnual Review of Ecology, Evolution, and Systematics
Volume44
DOIs
StatePublished - Nov 2013

Keywords

  • Evolution
  • Gene flow
  • Hybridization
  • Invasiveness
  • Plant conservation genetics
  • Transgene flow

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