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Data from: Domestication and geographic origin of Oryza sativa in China: insights from multilocus analyses of nucleotide variation of O. sativa
- 负责人：
- Yang, Qing-wen
- DOI：
- doi:10.5061/dryad.q1k76
- 摘要：
- Previous studies have indicated that China is one of the domestication centres of Asian cultivated rice (Oryza sativa), and common wild rice
Data from: The complex geography of domestication of the African rice Oryza glaberrima
- 负责人：
- Purugganan, Michael D.
- 关键词：
- population genomics domestication crop evolution cultivation shattering prostrate growth functional phylogeography crop population structure non-centric domestication
- DOI：
- doi:10.5061/dryad.t7g7cj4
- 摘要：
- Oryza glaberrima and its progenitor O. barthii, we hypothesize a non-centric (i.e. multiregional) domestication origin for African rice. Our analyses sh
Data from: Spatio-temporal transcript profiling of rice roots and shoots in response to phosphate starvation and recovery
- 负责人：
- 关键词：
- Rice phosphate starvation
- DOI：
- doi:10.5061/dryad.4480g
- 摘要：
- Using rice (Oryza sativa) as a model crop species, we performed an in-depth temporal transcriptome analysis, covering the early and late stages of Pi
Data from: Integrated genome-scale analysis identifies novel genes and networks underlying senescence in maize
- 负责人：
- DOI：
- doi:10.5061/dryad.5172532
- 摘要：
- Premature senescence in annual crops reduces yield while delayed senescence, termed stay-green, is known to impose both positive and negative impact on yield and nutrition quality. Despite the importance, scant information is available on the genetic architecture of senescence in maize (Zea mays L.) and other cereals. We combined a systematic characterization of natural diversity for senescence in maize and co-expression networks derived from transcriptome analysis of normally senescing and stay-green lines. Sixty-four candidate genes were identified by GWAS, and 14 of these are supported by additional evidence for involvement in senescence-related processes including proteolysis, sugar transport and signaling, and sink activity. Eight of the GWAS candidates, independently supported by a co-expression network underlying stay-green, include a trehalose-6-phosphate synthase, a NAC transcription factor, and two xylan biosynthetic enzymes. Source-sink communication and the activity of cell walls as a secondary sink emerge as key determinants of stay-green. Mutant analysis supports the role of a candidate encoding cysteine protease in stay-green in Arabidopsis (Arabidopsis thaliana), and analysis of natural alleles suggest a similar role in maize. This study provides a foundation for enhanced understanding and manipulation of senescence for increasing carbon yield, nutritional quality, and stress tolerance of maize and other cereals.
Data from: The role of Bh4 in parallel evolution of hull color in domesticated and weedy rice
- 负责人：
- Vigueira, Cynthia
- DOI：
- doi:10.5061/dryad.5v2dj
- 摘要：
- The two independent domestication events in the genus Oryza that led to African and Asian rice offer an extremely useful system for studying the gene
Data from: The effects of recombination, mutation and selection on the evolution of the Rp1 resistance genes in grasses
- 负责人：
- DOI：
- doi:10.5061/dryad.717vp
- 摘要：
- , we evaluate the importance of recombination, mutation and selection on the evolution of the R gene complex Rp1 of Sorghum, Triticum, Brachypodium, Oryza and Zea
Data from: The rice paradox: multiple origins but single domestication in Asian rice
- 负责人：
- Choi, Jae Young
- DOI：
- doi:10.5061/dryad.7cr0q
- 摘要：
- The origin of domesticated Asian rice (Oryza sativa) has been a contentious topic, with conflicting evidence for either single or multiple
Data from: Conserved gene expression programs in developing roots from diverse plants
- 负责人：
- DOI：
- doi:10.5061/dryad.68686
- 摘要：
- The molecular basis for the origin and diversification of morphological adaptations is a central issue in evolutionary developmental biology. Here, we defined temporal transcript accumulation in developing roots from seven vascular plants, permitting a genome-wide comparative analysis of the molecular programs used by a single organ across diverse species. The resulting gene expression maps uncover significant similarity in the genes employed in roots and their developmental expression profiles. The detailed analysis of a subset of 133 genes known to be associated with root development in Arabidopsis thaliana indicates that most of these are used in all plant species. Strikingly, this was also true for root development in a lycophyte (Selaginella moellendorffii), which forms morphologically different roots and is thought to have evolved roots independently. Thus, despite vast differences in size and anatomy of roots from diverse plants, the basic molecular mechanisms employed during root formation appear to be conserved. This suggests that roots evolved in the two major vascular plant lineages either by parallel recruitment of largely the same developmental program or by elaboration of an existing root program in the common ancestor of vascular plants.
Data from: Analysing the effect of paddy rice variety on fluorescence characteristics for nitrogen application monitoring
- 负责人：
- Feng, Zhongke
- DOI：
- doi:10.5061/dryad.4gt710v
- 摘要：
- Paddy rice is one of the most important cereal crops worldwide, it is a significant target to accurately monitor its growth status and photosynthetic efficiency. Nitrogen (N) levels is a key factor closely related to crop growth. In this study, laser-induced fluorescence (LIF) technology combined with multivariate analysis was applied to investigate the effect of paddy rice variety on the N fertilizer levels monitoring. Principle components analysis was conducted to extract the variables of the main fluorescence characteristics to identify N levels. Experimental results demonstrated that no nitrogen fertilizer can be completely identified for each paddy rice variety. In addition, other N levels can also be well classified based on fluorescence characteristics. Then, the relationship between the fluorescence ratio (F735/ F685: F735, and F685 denote the fluorescence intensity at 735nm, 685nm, respectively) and leaf N content of different paddy rice varieties was also discussed. Experimental results revealed that LIF technology is an effective method to monitor N fertilizer and leaf biochemical components of paddy rice.
Data from: Climate-dependent variation in cold tolerance of weedy rice and rice mediated by OsICE1 promoter methylation
- 负责人：
- 关键词：
- DOI：
- doi:10.5061/dryad.2ch4ns2
- 摘要：
- by which weedy rice (Oryza sativa f. spontanea) has adapted to endure low-temperature stress in northern latitudes remain unresolved
