scholarly journals Evidence for gene flow via seed dispersal from crop to wild relatives in Beta vulgaris (Chenopodiaceae): consequences for the release of genetically modified crop species with weedy lineages

2003 ◽  
Vol 270 (1524) ◽  
pp. 1565-1571 ◽  
Author(s):  
J.–F. Arnaud ◽  
F. Viard ◽  
M. Delescluse ◽  
J. Cuguen
Keyword(s):  
Gene Flow ◽  
Seed Dispersal ◽  
Beta Vulgaris ◽  
Genetically Modified ◽  
Wild Relatives ◽  
Crop Species ◽  
Genetically Modified Crop

Discordant Patterns of Introgression Suggest Historical Gene Flow into Thai Weedy Rice from Domesticated and Wild Relatives

2019 ◽  
Vol 110 (5) ◽  
pp. 601-609 ◽  
Author(s):  
Marshall J Wedger ◽  
Tonapha Pusadee ◽  
Anupong Wongtamee ◽  
Kenneth M Olsen
Keyword(s):  
Gene Flow ◽  
Ssr Markers ◽  
Wild Rice ◽  
Allelic Variation ◽  
Wild Relatives ◽  
Weedy Rice ◽  
Cultivated Rice ◽  
Crop Species ◽  
Global Food Security ◽  
North East

Abstract Weedy relatives of crop species infest agricultural fields worldwide, reducing harvests and threatening global food security. These weeds can potentially evolve and adapt through gene flow from both domesticated crop varieties and reproductively compatible wild relatives. We studied populations of weedy rice in Thailand to investigate the role of introgression from cultivated and wild rice in their evolution. We examined 2 complementary sources of genetic data: allelic variation at 3 rice domestication genes (Bh4, controlling hull color; Rc, controlling pericarp color and seed dormancy; and sh4, controlling seed shattering), and 12 previously published SSR markers. Sampling spanned 3 major rice growing regions in Thailand (Lower North, North East, and Central Plain) and included 124 cultivated rice accessions, 166 weedy rice accessions, and 98 wild rice accessions. Weedy rice strains were overall closely related to the cultivated varieties with which they co-occur. Domestication gene data revealed potential adaptive introgression of sh4 shattering alleles from wild rice. Introgression of potentially maladaptive rc crop alleles (conferring reduced dormancy) was also detected, with the frequency of the crop allele highest in northern populations. Although SSR markers also indicated introgression into weed populations from wild and cultivated rice, there was little overlap with domestication genes in the accessions showing admixed ancestry. This suggests that much of the introgression we detected at domestication genes most likely reflects past introgression rather than recent gene flow. This finding has implications for understanding long-term gene flow dynamics between rice and its weedy and wild relatives, including potential risks of transgene escape.

Monitoring gene flow from genetically modified soybean to cultivated soybean and wild soybean in China.

2021 ◽  
pp. 71-85
Author(s):  
Lai-Pan Liu ◽  
Kun Xue ◽  
Biao Liu
Keyword(s):  
Gene Flow ◽  
Field Experiments ◽  
Genetically Modified ◽  
Plant Genetic Resources ◽  
Wild Soybean ◽  
Wild Relatives ◽  
Gm Crops ◽  
Genetically Modified Soybean ◽  
Cultivated Soybean ◽  
Gm Soybean

Abstract With the large-scale commercial planting of genetically modified (GM) crops in the world, the gene flow from GM crops to their wild relatives and its environmental risks have become a hot topic in the field of biosafety of GM organisms (GMOs). Wild soybean is one of the important plant genetic resources in China. China has not only imported a large amount of GM soybeans every year, but also started to carry out field experiments of GM soybeans with intellectual property rights; therefore, the gene flow of GM soybean to wild relatives and its influence on natural resources should be assessed before the commercial planting of GM soybean in China. In this chapter, the research progress of gene flow from GM soybean to cultivated soybean and wild soybean and the fitness of hybrid offspring are reviewed. This chapter reviews the current studies on gene flow from GM soybean and its consequences and also proposes further research topics.

scholarly journals Rapeseed cytoplasm gives advantage in wild relatives and complicates genetically modified crop biocontainment

2009 ◽  
Vol 183 (4) ◽  
pp. 1201-1211 ◽  
Author(s):  
J. Allainguillaume ◽  
T. Harwood ◽  
C. S. Ford ◽  
G. Cuccato ◽  
C. Norris ◽  
...  
Keyword(s):  
Genetically Modified ◽  
Wild Relatives ◽  
Genetically Modified Crop

Flowering times in genetically modified Brassica hybrids in the absence of selection

2010 ◽  
Vol 90 (2) ◽  
pp. 185-187 ◽  
Author(s):  
N S Bautista ◽  
C L Sagers ◽  
E H Lee ◽  
L S Watrud
Keyword(s):  
Gene Flow ◽  
Brassica Napus ◽  
Genetically Modified ◽  
Flowering Phenology ◽  
Days To Flowering ◽  
Genetically Modified Crop

Changes in days to flowering (DTF) were observed among reciprocal F1 progeny of Brassica napus ‘RaideRR’ with other B. napus and also with weedy B. rapa. Changes in DTF are presented as factors to consider in evaluating the potential of crop to weed gene flow in different geographies.Key words: Brassica, canola, genetically modified crop, hybrid, flowering phenology

scholarly journals Safety verification of genetically modified rice morphology, hereditary nature, and quality

2021 ◽  
Vol 33 (1) ◽  
Author(s):  
Dong Won Jeon ◽  
Jae-Ryoung Park ◽  
Yoon-Hee Jang ◽  
Eun-Gyeong Kim ◽  
Taehun Ryu ◽  
...  
Keyword(s):  
Climate Change ◽  
Gene Flow ◽  
Negative Impact ◽  
Genetically Modified ◽  
Germination Rate ◽  
Future Climate Change ◽  
Yield Reduction ◽  
Drought Tolerant ◽  
Gm Plants ◽  
Gm Rice

Abstract Background The drought environment occurs frequently due to the unpredictable future climate change, and drought has a direct negative impact on crops, such as yield reduction. Drought events are random, frequent, and persistent. Molecular breeding can be used to create drought-tolerant food crops, but the safety of genetically modified (GM) plants must be demonstrated before they can be adopted. In this research, the environmental risk of drought-tolerant GM rice was explored by assessing phenotype and gene flow. Drought resistance genes CaMsrB2 inserted HV8 and HV23 were used as GM rice to analyze the possibility of various agricultural traits and gene flow along with non-GM rice. Results When the traits 1000-grain weight, grain length/width, and yield, were compared with GM rice and non-GM rice, all agricultural traits of GM rice and non-GM rice were the same. In addition, when the germination rate, viviparous germination rate, pulling strength, and bending strength were compared to analyze the possibility of weediness, all characteristic values of GM rice and non-GM rice were the same. Protein, amylose, and moisture, the major nutritional elements of rice, were also the same. Conclusions The results of this research are that GM rice and non-GM rice were the same in all major agricultural traits except for the newly assigned characteristics, and no gene mobility occurred. Therefore, GM rice can be used as a means to solve the food problem in response to the unpredictable era of climate change in the future.

Sign in / Sign up

Export Citation Format

Share Document