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Open AccessDr. Yang Zhong: An explorer on the road forever
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Open AccessNon-random transmission of parental alleles into crop-wild and crop-weed hybrid lineages separated by a transgene and neutral identifiers in rice
It is essential to assess environmental impact of transgene flow from genetically engineered crops to their wild or weedy relatives before commercialization. Measuring comparative trials of fitness in the tran...
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Article
Reduced weed seed shattering by silencing a cultivated rice gene: strategic mitigation for escaped transgenes
Transgene flow form a genetically engineered (GE) crop to its wild relatives may result in unwanted environmental consequences. Mitigating transgenes via introducing a gene that is disadvantageous to wild rela...
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Open AccessGenetically engineered rice endogenous 5-enolpyruvoylshikimate-3-phosphate synthase (epsps) transgene alters phenology and fitness of crop-wild hybrid offspring
Genetically engineered (GE) rice endogenous epsps (5-enolpyruvoylshikimate-3-phosphate synthase) gene overexpressing EPSPS can increase glyphosate herbicide-resistance of cultivated rice. This type of epsps trans...
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Article
Limited ecological risk of insect-resistance transgene flow from cultivated rice to its wild ancestor based on life-cycle fitness assessment
Ecological impact caused by transgene flow from genetically engineered (GE) crops to their wild relatives is largely determined by the fitness effect brought by a transgene. To estimate such impact is critical...
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Challenges of transgenic crop commercialization in China
Transgenic biotechnology offers great opportunities for food security. But the potential effects on human health and the environment are a major concern to the public, which hinders the application of the tech...
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Efficacy of insect-resistance Bt/CpTI transgenes in F5–F7 generations of rice crop–weed hybrid progeny: implications for assessing ecological impact of transgene flow
Ecological impact of transgene flow into populations of wild/weedy relatives is associated with fitness effects in hybrid progeny. Most studies assessing fitness effects focus essentially on early-generation h...
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Map** quantitative trait loci (QTL) determining seed-shattering in weedy rice: evolution of seed shattering in weedy rice through de-domestication
Seed shattering is an important trait that distinguishes domesticated plants from their wild and weedy counterparts. This trait is essential for seed harvesting in the production of cereal crops, and therefore...
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Predicting hybrid fertility from maker-based genetic divergence index of parental varieties: implications for utilizing inter-subspecies heterosis in hybrid rice breeding
Utilizing inter-subspecies heterosis of indica-japonica rice hybrids is a potential solution to break the yield ceiling for hybrid rice breeding. However, the reduced panicle fertility (PF) of the inter-subspecie...
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Open AccessMultiple tissue-specific expression of rice seed-shattering gene SH4 regulated by its promoter pSH4
Rice seed shattering is an important domestication syndrome encoded by a gene named as SH4. The coding region of SH4 has been well studied regarding its function and roles in evolution. However, its promoter has ...
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Article
RNAi-directed downregulation of betaine aldehyde dehydrogenase 1 (OsBADH1) results in decreased stress tolerance and increased oxidative markers without affecting glycine betaine biosynthesis in rice (Oryza sativa)
As an important osmoprotectant, glycine betaine (GB) plays an essential role in resistance to abiotic stress in a variety of organisms, including rice (Oryza sativa L.). However, GB content is too low to be dete...
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The Accumulation of Glycine Betaine Is Dependent on Choline Monooxygenase (OsCMO), Not on Phosphoethanolamine N-Methyltransferase (OsPEAMT1), in Rice (Oryza sativa L. ssp. japonica)
Glycine betaine (GB) is an important osmoprotectant, which improves plant tolerance to various abiotic stresses. In higher plants, GB is synthesized through two-step oxidations of choline, catalyzed by choline...
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Open AccessDraft genome of the kiwifruit Actinidia chinensis
The kiwifruit (Actinidia chinensis) is an economically and nutritionally important fruit crop with remarkably high vitamin C content. Here we report the draft genome sequence of a heterozygous kiwifruit, assemble...
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Article
Rice choline monooxygenase (OsCMO) protein functions in enhancing glycine betaine biosynthesis in transgenic tobacco but does not accumulate in rice (Oryza sativa L. ssp. japonica)
Glycine betaine (GB) is a compatible quaternary amine that enables plants to tolerate abiotic stresses, including salt, drought and cold. In plants, GB is synthesized through two-step of successive oxidations ...
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Article
Introgression from cultivated rice influences genetic differentiation of weedy rice populations at a local spatial scale
Hybridization and introgression can play an important role in genetic differentiation and adaptive evolution of plant species. For example, a conspecific feral species may frequently acquire new alleles from i...
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Enhanced yield performance of Bt rice under target-insect attacks: implications for field insect management
The rapid development of transgenic biotechnology has greatly promoted the breeding of genetically engineered (GE) rice in China, and many GE rice lines are in the pipeline for commercialization. To understand...
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Polyploidy origin of wheatgrass Douglasdeweya wangii (Triticeae, Poaceae): evidence from nuclear ribosomal DNA internal transcribed spacer and chloroplast trnL–F sequences
To study hybrid speciation in wheatgrass Douglasdeweya wangii and to investigate the evolutionary pattern of nuclear ribosomal DNA (nrDNA) internal transcribed spacer sequences (ITSs) in allotetraploids, DNA sequ...
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Differentiation and distribution of indica and japonica rice varieties along the altitude gradients in Yunnan Province of China as revealed by InDel molecular markers
Indica–japonica variation represents the most significant genetic differentiation in Asian cultivated rice (Oryza sativa L. subsp. indica Kato or subsp. japonica Kato). Understanding the differentiation and distr...
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Open AccessDuplication and independent selection of cell-wall invertase genes GIF1 and OsCIN1 during rice evolution and domestication
Various evolutionary models have been proposed to interpret the fate of paralogous duplicates, which provides substrates on which evolution selection could act. In particular, domestication, as a special selec...
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Population structure affected by excess gene flow in self-pollinating Elymus nutans and E. burchan-buddae (Triticeae: Poaceae)
Seed-mediated gene flow can considerably affect population genetic structure of strictly self-pollinating species, but little is known on the extent and nature of such gene flow among pastoral plant population...
