Publications by authors named "Yumeng Nie"
The optimal timing of the transition from vegetative growth to reproductive growth is critical for plant reproductive success, and the underlying regulatory mechanisms have been well studied in angiosperm model species, but relatively little in gymnosperms. DAL1, a MADS domain transcription factor (TF) that shows a conserved age-related expression profile in conifers, may be an age timer. However, how DAL1 mediates the onset of reproductive growth remains poorly understood.
View Article and Find Full Text PDFThe proper response to various abiotic stresses is essential for plants' survival to overcome their sessile nature, especially for perennial trees with very long-life cycles. However, in conifers, the molecular mechanisms that coordinate multiple abiotic stress responses remain elusive. Here, the transcriptome response to various abiotic stresses like salt, cold, drought, heat shock and osmotic were systematically detected in () seedlings.
View Article and Find Full Text PDFMore than 600 species of conifers (phylum Pinophyta) serve as the backbone of the Earth's terrestrial plant community and play key roles in global carbon and water cycles. Although coniferous forests account for a large fraction of global wood production, their productivity relies largely on the use of genetically improved seeds. However, acquisition of such seeds requires recurrent selection and testing of genetically superior parent trees, eventually followed by the establishment of a seed orchard to produce the improved seeds.
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- Pinus tabuliformis is a significant tree species in northern China, and its TCP transcription factors are crucial for understanding its adaptation to cold climates, but their specific functions remain unclear.
- In this study, 43 TCP genes were identified in the P. tabuliformis genome and categorized into four groups based on evolutionary relationships, revealing distinct motifs and structural characteristics among these groups.
- The findings suggest that certain TCP genes, especially from clade II, play a key role in regulating the tree's seasonal and circadian rhythms, with winter cold temperatures potentially influencing their diurnal expression patterns.
Article Synopsis
- Conifers, particularly the Chinese pine, have large and complex genomes, which present challenges for creating comprehensive reference genomes for research.
- A newly assembled 25.4-Gb genome revealed significant intergenic regions and long introns, indicating a high content of transposable elements and showing that larger genes were more highly expressed.
- The study found extensive gene duplication linked to stress responses and identified unique reproductive mechanisms in conifers compared to flowering plants, providing valuable insights into their evolution and adaptation.
Article Synopsis
- Age functions as a crucial physiological indicator for the developmental stages of organisms, with different aging pathways observed in gymnosperms and angiosperms.
- The research identifies a specific protein, PtDAL1, that is essential for the transition from vegetative to reproductive stages in conifers, and it highlights its interactions with a variety of proteins that respond to environmental factors.
- The study proposes a new model where PtDAL1 integrates environmental signals and regulates conifer development through its complex interactions with transcription factors, transcriptional regulators, and kinases.