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Identifying the Risks of Transgene Escape from Sugarcane Crops to Related Species, with Particular Reference to Saccharum spontaneum in Australia

Identifying the Risks of Transgene Escape from Sugarcane Crops to Related Species, with... Sugarcane is a major crop of tropical and sub-tropical climates. Modern cultivars are hybrids of several Saccharum species. Many attempts have been made to make intergeneric crosses to increase the diversity of germplasm available for breeding. Currently methods of incorporating new traits through genetic manipulation are also being researched. A review of the attempts by breeders to make hybridisations with sugarcane has been performed to determine the likelihood of spontaneous transfer of a transgene to a range of other species. When combined with the list of sexually compatible species growing outside of cultivation in Australia, Saccharum spontaneum L. was considered to be the most likely to spontaneously hybridise with commercial sugarcane. Using a combination of local knowledge and herbarium samples, S. spontaneum has been documented at five previously unpublished locations in Australia. Analysis of the DNA of plants growing at each of these locations, by molecular markers, showed vegetative propagation at three sites, predominantly vegetative propagation at a fourth and the presence of a more diverse set of plants at the fifth. At the latter location there may have been multiple introductions, interbreeding between clones or both. An analysis of both pollen and seed viability from these plants would discriminate between these options and determine whether S. spontaneum is interbreeding with commercial sugarcane. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Tropical Plant Biology Springer Journals

Identifying the Risks of Transgene Escape from Sugarcane Crops to Related Species, with Particular Reference to Saccharum spontaneum in Australia

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References (65)

Publisher
Springer Journals
Copyright
Copyright © 2008 by Springer-Verlag
Subject
Life Sciences; Ecology; Plant Anatomy/Development; Plant Genetics & Genomics; Plant Sciences
ISSN
1935-9756
eISSN
1935-9764
DOI
10.1007/s12042-007-9002-x
Publisher site
See Article on Publisher Site

Abstract

Sugarcane is a major crop of tropical and sub-tropical climates. Modern cultivars are hybrids of several Saccharum species. Many attempts have been made to make intergeneric crosses to increase the diversity of germplasm available for breeding. Currently methods of incorporating new traits through genetic manipulation are also being researched. A review of the attempts by breeders to make hybridisations with sugarcane has been performed to determine the likelihood of spontaneous transfer of a transgene to a range of other species. When combined with the list of sexually compatible species growing outside of cultivation in Australia, Saccharum spontaneum L. was considered to be the most likely to spontaneously hybridise with commercial sugarcane. Using a combination of local knowledge and herbarium samples, S. spontaneum has been documented at five previously unpublished locations in Australia. Analysis of the DNA of plants growing at each of these locations, by molecular markers, showed vegetative propagation at three sites, predominantly vegetative propagation at a fourth and the presence of a more diverse set of plants at the fifth. At the latter location there may have been multiple introductions, interbreeding between clones or both. An analysis of both pollen and seed viability from these plants would discriminate between these options and determine whether S. spontaneum is interbreeding with commercial sugarcane.

Journal

Tropical Plant Biology – Springer Journals

Published: Jan 30, 2008

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