Establishment of a rice transgene flow model for predicting maximum distances of gene flow in southern China

Yao, Ke-min; Hu, Ning; Chen, Wanlong; Li, Renzhong; Yuan, Qianhua; Wang, Feng; Qian, Qian; Jia, Sun

doi:10.1111/j.1469-8137.2008.02555.x

Cited by 19 publications

(24 citation statements)

References 33 publications

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“…The concerns regarding the environmental impact of GE plants include those worries related to their possible invasiveness in ecosystems (Snow et al 2005); outcrossing and horizontal gene transfer (Yao et al 2008, Rong et al 2010); development of resistant pest populations that would again require the input of pesticides (Tabashnik et al 2009); and effects on nontarget organisms (NTOs). In the case of IRGE plants, effects on NTOs is a particular concern, as these organisms provide important ecosystem services such as biological control (predators and parasitoids), pollination, and decomposition (Kennedy 2008, Romeis et al 2008a.…”

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confidence: 99%

Development of a Tier-1 Assay for Assessing the Toxicity of Insecticidal Substances Against <I>Coleomegilla maculata</I>

Ostrem

Romeis

et al. 2011

env. entom.

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To assess the potential dietary effects of insecticidal substances on the predacious ladybird beetle, Coleomegilla maculata De Geer, a Tier-1 laboratory testing system was developed. Artificial diets using shrimp eggs were developed, and a tier-1 bioassay examining C. maculata development and survival was designed based on those diets. To further measure the artificial diet in a Tier-1 testing system, larvae of C. maculata were fed the diet treated with different concentrations of an inorganic stomach poison, potassium arsenate (PA), or a cysteine protease inhibitor, E-64. The results demonstrated that the testing system was capable of detecting the dietary effects of both substances on the survival and development ofC. maculata. With increasing concentrations of PA in the diet, fewer larvae developed to adults, with only 22.7% larvae surviving to the adult stage in the treatment with the highest content of PA (32 µg/g of diet). Likewise, dose-dependent responses also were found for other life-table parameters of C. maculata. Similar to the assays with PA, the survival rates of C. maculata consistently decreased with increasing E-64 content in the diet. Survival analysis showed that the insects fed E-64 at 50, 150, and 450 µg/g in the diet had significantly lower survival rates compared with those on the untreated artificial diet. The study presented here describes a robust testing system that will be useful for assessing the potential hazard (or toxicity) effects after dietary exposure of insecticidal compounds produced by GE plants or conventional insecticides on the ladybird predator, C. maculata. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. ABSTRACT To assess the potential dietary effects of insecticidal substances on the predacious ladybird beetle, Coleomegilla maculata De Geer, a Tier-1 laboratory testing system was developed. ArtiÞcial diets using shrimp eggs were developed, and a tier-1 bioassay examining C. maculata development and survival was designed based on those diets. To further measure the artiÞcial diet in a Tier-1 testing system, larvae of C. maculata were fed the diet treated with different concentrations of an inorganic stomach poison, potassium arsenate (PA), or a cysteine protease inhibitor, E-64. The results demonstrated that the testing system was capable of detecting the dietary effects of both substances on the survival and development of C. maculata. With increasing concentrations of PA in the diet, fewer larvae developed to adults, with only 22.7% larvae surviving to the adult stage in the treatment with the highest content of PA (32 g/g of diet). Likewise, dose-dependent responses also were found for other life-table parameters of C. maculata. Similar to the assays with PA, the survival rates of C. maculata consistently decreased with increasing E-64 content in the die...

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confidence: 99%

Development of a Tier-1 Assay for Assessing the Toxicity of Insecticidal Substances Against <I>Coleomegilla maculata</I>

Ostrem

Romeis

et al. 2011

env. entom.

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“…Previous studies found that GM rice may hybridize with traditional cultivars (Messeguer et al 2001(Messeguer et al , 2004Rong et al 2005Rong et al , 2007Jia et al 2007;Yuan et al 2007;Yao et al 2008), weedy rice (Zhang et al 2003(Zhang et al , 2006Chen et al 2004;Messeguer et al 2004;Sanchez Olguin et al 2009), and wild rice (Chen et al 2004;Yao et al 2008). A few GM rice lines have been developed in Korea, including those tolerant to herbicides (Lee et al 2007) and abiotic stresses (Jang et al 2003).…”

Section: Introductionmentioning

confidence: 98%

Gene flow from herbicide-tolerant GM rice and the heterosis of GM rice-weed F2 progeny

Chun

Kim

Park

et al. 2011

Planta

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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.

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“…In addition, PMGF frequencies estimated from a limited number of field experiments may not represent PMGF frequencies of a particular plant species under diverse environmental conditions. As a comparison, mathematical modelling can provide relatively quick estimation of PMGF frequencies for different plant species under diverse environmental conditions (Yao et al 2008; Rong et al 2010; Hu et al 2014). Undoubtedly, mathematical modelling provides a powerful complement of the field-experiment-based method to estimate PMGF frequencies, provided that the model can accurately simulate PMGF (Rong et al 2010; Wang et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Model-based calculating tool for pollen-mediated gene flow frequencies in plants

Wang

2016

AoB PLANTS

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This study provide a model-based calculating tool/software that can accurately calculate pollen-mediated gene flow (PMGF) frequencies of wind-pollinated plant species by including five biological and climatic parameters. The calculating tool can easily be used by any users who are not familiar with mathematical modeling. The required parameters can be measured directly in the field without conducting PMGF experiments, which makes this tool practical to estimate PMGF frequencies. This tool will be helpful to estimate transgene flow and its potential impacts, in addition to determining isolation distances between GE and non-GE crops.

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Establishment of a rice transgene flow model for predicting maximum distances of gene flow in southern China

Cited by 19 publications

References 33 publications

Development of a Tier-1 Assay for Assessing the Toxicity of Insecticidal Substances Against <I>Coleomegilla maculata</I>

Development of a Tier-1 Assay for Assessing the Toxicity of Insecticidal Substances Against <I>Coleomegilla maculata</I>

Gene flow from herbicide-tolerant GM rice and the heterosis of GM rice-weed F2 progeny

Model-based calculating tool for pollen-mediated gene flow frequencies in plants

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