Direct and reverse pollen-mediated gene flow between GM rice and red rice weed

Serrat, Xavier; Esteban, Roger; Peñas, Gisela; Catalá, M. M.; Melé, Enric; Messeguer, Joaquima

doi:10.1093/aobpla/plt050

Cited by 15 publications

(8 citation statements)

References 44 publications

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“…The genes related to environmental adaptation and competitive ability present in different rice types would be selected for over time once initial hybridization provides opportunity for recombination 14 36 . Some genes for enhanced traits from rice, including transgenes, can introgress into weedy rice 36 37 38 39 40 . Likewise, undesirable weediness genes from weedy rice can be transferred into cultivated rice 41 .…”

Section: Discussionmentioning

confidence: 99%

Cytoplasmic-genetic male sterility gene provides direct evidence for some hybrid rice recently evolving into weedy rice

Zhang

Dai

et al. 2015

Sci Rep

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Weedy rice infests paddy fields worldwide at an alarmingly increasing rate. There is substantial evidence indicating that many weedy rice forms originated from or are closely related to cultivated rice. There is suspicion that the outbreak of weedy rice in China may be related to widely grown hybrid rice due to its heterosis and the diversity of its progeny, but this notion remains unsupported by direct evidence. We screened weedy rice accessions by both genetic and molecular marker tests for the cytoplasmic male sterility (CMS) genes (Wild abortive, WA, and Boro type, BT) most widely used in the production of indica and japonica three-line hybrid rice as a diagnostic trait of direct parenthood. Sixteen weedy rice accessions of the 358 tested (4.5%) contained the CMS-WA gene; none contained the CMS-BT gene. These 16 accessions represent weedy rices recently evolved from maternal hybrid rice derivatives, given the primarily maternal inheritance of this trait. Our results provide key direct evidence that hybrid rice can be involved in the evolution of some weedy rice accessions, but is not a primary factor in the recent outbreak of weedy rice in China.

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Section: Discussionmentioning

confidence: 99%

Cytoplasmic-genetic male sterility gene provides direct evidence for some hybrid rice recently evolving into weedy rice

Zhang

Dai

et al. 2015

Sci Rep

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“…In parallel to crop-to-weed gene flow, some gene flow also occurs in the reverse direction. This reverse flow of wild genetic material could result in the emergence of crop seeds that have incorporated dominant weedy rice traits (Burgos et al 2008;Serrat et al 2013). Ziska et al (2012) found evidence to support the likelihood of increased weed crop gene flow with climate change and stated that climatic (Suh 2008;Chen and Suh 2015) change has altered the phenological traits and enhanced the adaptive fitness value of weedy strains.…”

Section: Outcrossing and Its Associated Concerns In 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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“…Fitness is the survival of a hybrid with a good reproductive ability in a given environment (Han et al 2015). Significant fitness differences have been observed in B. rapa × B. napus, GM sunflower × wild sunflower, GM rice × weedy rice, and sugar beet × swiss chard hybrids (Hooftman et al 2014;Serrat et al 2013;Mercer et al 2006;Ellstrand 2002). Once the hybrid has passed in to the wild, its persistence as a transgenic wild weed can be a serious environmental threat, as was observed in sugar beet × swiss chard hybrids (Ellstrand 2002).…”

Section: A N U S C R I P Tmentioning

confidence: 99%

Impact on environment, ecosystem, diversity and health from culturing and using GMOs as feed and food

Tsatsakis

Nawaz

Tutelyan

et al. 2017

Food and Chemical Toxicology

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Modern agriculture provides the potential for sustainable feeding of the world's increasing population. Up to the present moment, genetically modified (GM) products have enabled increased yields and reduced pesticide usage. Nevertheless, GM products are controversial amongst policy makers, scientists and the consumers, regarding their possible environmental, ecological, and health risks. Scientific-and-political debates can even influence legislation and prospective risk assessment procedure. Currently, the scientifically-assessed direct hazardous impacts of GM food and feed on fauna and flora are conflicting; indeed, a review of literature available data provides some evidence of GM environmental and health risks. Although the consequences of gene flow and risks to biodiversity are debatable. Risks to the environment and ecosystems can exist, such as the evolution of weed herbicide resistance during GM cultivation. A matter of high importance is to provide precise knowledge and adequate current information to regulatory agencies, governments, policy makers, researchers, and commercial GMO-releasing companies to enable them to thoroughly investigate the possible risks.

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Direct and reverse pollen-mediated gene flow between GM rice and red rice weed

Cited by 15 publications

References 44 publications

Cytoplasmic-genetic male sterility gene provides direct evidence for some hybrid rice recently evolving into weedy rice

Cytoplasmic-genetic male sterility gene provides direct evidence for some hybrid rice recently evolving into weedy rice

Weedy rice in sustainable rice production. A review

Impact on environment, ecosystem, diversity and health from culturing and using GMOs as feed and food

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