Gene flow from herbicide-tolerant GM rice and the heterosis of GM rice-weed F2 progeny = 제초제내성 GM 벼의 유전자이동

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Title
Gene flow from herbicide-tolerant GM rice and the heterosis of GM rice-weed F2 progeny = 제초제내성 GM 벼의 유전자이동
Author(s)
Young Jin Chun; Dae In Kim; Kee Woong Park; Hyo Jeong Kim; Soon Chun Jeong; J H An; K H Cho; K Back; Hwan Mook Kim; Chang-Gi Kim
Bibliographic Citation
Planta, vol. 233, no. 4, pp. 807-815
Publication Year
2011
Abstract
Gene flow from genetically modified (GM) crops to non-GM cultivars or weedy relatives may lead to the development of more aggressive weeds. We quantified the amount of gene flow from herbicide-tolerant GM rice (Protox GM, derived from the cultivar Dongjin) to three cultivars (Dongjin, Aranghyangchal and Hwaseong) and a weedy rice line. Gene flow frequency generally decreased with increasing distance from the pollen donor. At the shortest distance (0.5 m), we observed a maximum frequency (0.039%) of gene flow. We found that the cultivar Dongjin received the greatest amount of gene flow, with the second being weedy rice. Heterosis of F2 inbred progeny was also examined between Protox GM and weedy rice. We compared growth and reproduction between F2 progeny (homozygous or hemizygous for the Protox gene) and parental rice lines (GM and weedy rice). Here, transgene-homozygous F2 progeny was significantly taller and produced more seeds than the transgene-hemizygous F2 progeny and parental lines. Although the gene flow frequency was generally low, our results suggest that F2 progeny between GM and weedy relatives may exhibit heterosis.
Keyword
Genetically modified (GM)HeterosisHybridRiceRisk assessmentTransgene
ISSN
0032-0935
Publisher
Springer
DOI
http://dx.doi.org/10.1007/s00425-010-1339-y
Type
Article
Appears in Collections:
Ochang Branch Institute > 1. Journal Articles
Division of Bio Technology Innovation > Bio-Evaluation Center > 1. Journal Articles
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