Review

Tree Genetics & Genomes

, Volume 3, Issue 2, pp 75-100

First online:

Genetic containment of forest plantations

  • Amy M. BrunnerAffiliated withDepartment of Forestry, Virginia Polytechnic Institute and State University
  • , Jingyi LiAffiliated withDepartment of Forest Science, Oregon State University
  • , Stephen P. DiFazioAffiliated withDepartment of Biology, West Virginia University
  • , Olga ShevchenkoAffiliated withDepartment of Forest Science, Oregon State University
  • , Brooke E. MontgomeryAffiliated withDepartment of Forest Science, Oregon State University
  • , Rozi MohamedAffiliated withDepartment of Forest Science, Oregon State University
  • , Hao WeiAffiliated withDepartment of Forest Science, Oregon State University
  • , Cathleen MaAffiliated withDepartment of Forest Science, Oregon State University
  • , Ani Anna EliasAffiliated withDepartment of Forest Science, Oregon State University
    • , Katherine VanWormerAffiliated withDepartment of Forest Science, Oregon State University
    • , Steven H. StraussAffiliated withDepartment of Forest Science, Oregon State University Email author 

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

Dispersal of pollen, seeds, or vegetative propagules from intensively bred, exotic, or recombinant DNA modified forest plantations may cause detrimental or beneficial ecological impacts on wild or managed ecosystems. Insertion of genes designed to prevent or substantially reduce dispersal could reduce the risk and extent of undesired impacts. Containment measures may also be required by law or marketplace constraints, regardless of risks or benefits. We discuss: (1) the context for when genetic containment or mitigation systems may be needed; (2) technology approaches and mechanisms; (3) the state of knowledge on genes/genomics of sexual reproduction in forest trees; (4) stability of transgene expression during vegetative growth; (5) simulation studies to define the level of containment needed; and (6) needed research to deliver effective containment technologies. We illustrate progress with several examples from our research on recombinant DNA modified poplars. Our simulations show that even partial sterility can provide very substantial reductions in gene flow into wild trees. We conclude that it is impossible to define the most effective containment approaches, nor their reliability, based on current genomic knowledge and technological tools. Additional genomic and technological studies of a wide variety of options are needed. Studies in field environments are essential to provide data relevant to ecological analysis and regulatory decisions and need to be carried out in phylogenetically diverse representatives of the economically most important taxa of forest trees.

Keywords

Populus Pinus Eucalyptus Sterility Confinement Ablation Excision Genetic engineering Genetic modification Forest biotechnology Gene flow Trees Simulation Stability