Document Detail


Environmental risk assessment of genetically engineered herbicide-tolerant Zoysia japonica.
MedLine Citation:
PMID:  18178894     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Herbicide-tolerant Zoysia grass (Zoysia japonica Steud.) has been generated previously through Agrobacterium tumefaciens-mediated transformation. The genetically modified (GM) Zoysia grass survived Basta spraying and grew to maturity normally while the wild-type (WT) grass stopped growing and died. GM Zoysia grass will permit more efficient weed control for various turf grass plantings such as home lawns, golf courses, and parks. We examined the environmental/biodiversity risks of herbicide-tolerant GM Zoysia before applying to regulatory agencies for approval for commercial release. The GM and WT Zoysia grass' substantial trait equivalence, ability to cross-pollinate, and gene flow in confined and unconfined test fields were selectively analyzed for environmental/biodiversity effects. No difference between GM and WT Zoysia grass in substantial traits was found. To assess the potential for cross-pollination and gene flow, a non-selective herbicide, Basta, was used. Results showed that unintended cross-pollination with and gene flow from GM Zoysia grass were not detected in neighboring weed species examined, but were observed in WT Zoysia grass (on average, 6% at proximity, 1.2% at a distance of 0.5 m and 0.12% at a radius of 3 m, and 0% at distances over 3 m). On the basis of these initial studies, we conclude that the GM Zoysia grass generated in our laboratory and tested in the Nam Jeju County field does not appear to pose a significant risk when cultivated outside of test fields.
Authors:
T W Bae; E Vanjildorj; S Y Song; S Nishiguchi; S S Yang; I J Song; T Chandrasekhar; T W Kang; J I Kim; Y J Koh; S Y Park; J Lee; Y-E Lee; K H Ryu; K Z Riu; P-S Song; H Y Lee
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-01-04
Journal Detail:
Title:  Journal of environmental quality     Volume:  37     ISSN:  0047-2425     ISO Abbreviation:  J. Environ. Qual.     Publication Date:    2008 Jan-Feb
Date Detail:
Created Date:  2008-01-07     Completed Date:  2008-03-25     Revised Date:  2009-11-23    
Medline Journal Info:
Nlm Unique ID:  0330666     Medline TA:  J Environ Qual     Country:  United States    
Other Details:
Languages:  eng     Pagination:  207-18     Citation Subset:  IM    
Affiliation:
Faculty of Biotechnology, Cheju National University, Jeju 690-756, Korea.
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MeSH Terms
Descriptor/Qualifier:
Adult
Antigens, Plant / immunology
Female
Gene Flow
Herbicide Resistance*
Humans
Hybridization, Genetic
Hypersensitivity / etiology,  immunology
Korea
Male
Phenotype
Plants, Genetically Modified / anatomy & histology,  physiology*
Poaceae / anatomy & histology,  physiology*
Pollen / immunology
Pollination
Risk Assessment
Skin Tests
Wind
Chemical
Reg. No./Substance:
0/Antigens, Plant
Comments/Corrections
Erratum In:
J Environ Qual. 2009 Nov-Dec;38(6):2480

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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