Agronomic performance of F1, F2 and F3 hybrids between weedy rice and transgenic glufosinate‐resistant rice

Song, Xiaoling; Wang, Zhou; Sheng, Qiang

doi:10.1002/ps.2132

Cited by 27 publications

(16 citation statements)

References 61 publications

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“…It has been demonstrated that after hybridisation, the transgene can be stably transmitted across the different generations of F2 and F3 (Song et al . ), as also observed here. Further, the segregation for herbicide resistance fitted a 3:1 genetic ratio in F2, confirming that resistance was controlled in the hybrid and further generations by the dominant nuclear transgene.…”

Section: Discussionsupporting

confidence: 91%

Gene flow from transgenic rice to red rice (Oryza sativa L.) in the field

et al. 2013

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In this study, we simulate a transgenic rice crop highly infested with red rice to examine transgene transfer from a transgenic line (A2504) resistant to glufosinate ammonium to cohabitant red rice. The red rice was sown along with the transgenic line at the highest density found in naturally infested crops in the region. Agricultural practices similar to those used to control red rice infestation in northern Italy rice fields were used to reproduce the local rice production system. During the first 2 years, the field was treated with herbicide at the appropriate time; in the first year the dosage of herbicide was three times the recommended amount. In this first year, detectable red rice plants that escaped herbicide treatment were manually removed. Nevertheless, two herbicide-resistant hybrid plants (named 101 and 104) were identified in the experimental field during the second year of cultivation. Phenotypic and molecular characterisation suggests the hybrid nature of these two plants, deriving from crossing events involving A2504, respectively, with red rice (plant 101) and the buffer cultivar Gladio (plant 104). The progeny of two subsequent generations of the two plants were examined and the presence of the transgene detected, indicating stable transfer of the transgene across generations. In conclusion, despite control methods, red rice progeny tolerant to the herbicide can be expected following use of transgenic rice and, consequently, difficulties in controlling this weed with chemicals will emerge in a relatively short time.

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Section: Discussionsupporting

confidence: 91%

Gene flow from transgenic rice to red rice (Oryza sativa L.) in the field

et al. 2013

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“…Crop-to-weed gene flow is of special concern when transgenes are involved as it leads to the movement of genetically modified (GM) genes to weeds that might confer survival advantages that enable them to outcompete local strains (Oard et al 2000;Lu and Snow 2005;Cao et al 2006;Zhang et al 2006;Yang et al 2012). Crop-weed hybrids have been found to show variable levels of adaptability and survival capabilities (Burgos et al 2008(Burgos et al , 2014Reagon et al 2011;Song et al 2011;Yang et al 2012). Morphological (Sato 2000).…”

Section: Outcrossing and Its Associated Concerns In Weedy Ricementioning

confidence: 99%

“…As already mentioned, the gene flow between resistant rice varieties and weedy rice has generated hybrid weedy rice populations with variable traits. Herbicide-resistant weedy rice grown in rice fields were found to have short heights, early flowering, and reduced seed shattering (Burgos et al 2008, 2014Reagon et al 2011;Song et al 2011;Yang et al 2012). Furthermore, the insect-resistant weedy rice hybrids generated from crossing weedy rice with insectresistant cultivated varieties have also led to increased seed production .…”

Section: Potential Value Of Weedy Ricementioning

confidence: 99%

Weedy rice in sustainable rice production. A review

Nadir

Xiong

Zhu

et al. 2017

Agron. Sustain. Dev.

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Weedy rice refers to the unwanted plants of the genus Oryza that have some undesirable agronomic traits and pose a major threat to sustainable rice production worldwide. Widespread adoption of direct seeded rice and hybridization or gene flow between cultivated rice and their wild relatives has resulted in the creation and dissemination of weedy rice. Currently, weedy rice (Oryza sativa f. spontanea) has become one of the most common weeds infesting rice fields worldwide. In this paper, we review the biology, physiology, evolution, and genetic features of weedy rice. We also discuss the major obstacles in weedy rice management, including high diversity of weedy rice, ecological impacts of gene flow on weedy rice, changing climate, and weedy rice management. We then present a framework for the sustainable management and utilization of weedy rice. Our main emphasis is to explore the reservoir of natural variations in weedy germplasm and to utilize them for crop improvement. This review outlines some of the latest biotechnological tools to dissect the genetic backgrounds of several favorable traits of weedy rice that may prove beneficial for breeding and evolutionary studies on cultivated rice. We suggest that by merging the disciplines of genomics, breeding, and weed management, we can achieve the goal of sustainable rice production.

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“…Glufosinateresistant rice was deregulated (approved for sale) but never commercialized, perhaps partly because of the potential problem of gene flow to weedy rice and nontransgenic rice (Oard et al, 2000;Olofsdotter et al, 2000;Sanchez-Olguin et al, 2009;Song et al, 2011). The adoption of glufosinateresistant crops has been only a small fraction of the HR crop market, primarily because glyphosate is a more effective herbicide than glufosinate on many weed species.…”

Section: Herbicidementioning

confidence: 97%