Project description:Castanopsis fissa is an evergreen broad-leaved species of the cone genus Castanopsis in the family Fagaceae, which is widely distributed and is an excellent native species in Guangdong Province of China. This species has a well-developed root system, excellent soil-fixing power, and better soil and water conservation ability and has the characteristics of barren tolerance, strong sprouting power, abundant and easily decomposed dead leaves, etc. Therefore, C. fissa is not only a pioneer species for postdestruction sprouting forests but also a highly potential ecological public welfare forest tree species. Moreover, due to its beautiful shape, wide canopy and various colors, it has become an ideal tree for landscaping and ornamental purposes. However, there is a basic gap in knowledge in the reports on the drought resistance or drought tolerance genes of C. fissa. Based on the above details, in this study, 2-year-old C. fissa seedlings were used as the study material to investigate the physiological response under drought stress by a potted drought experiment, and we also compared and analyzed the differentially expressed proteins (DEPs) under different periods of drought stress by TMT quantitative labeling protein to prepare a preliminary study on the physiological response and proteomic mechanism of C. fissa adaptation to drought stress.
2023-07-24 | PXD038837 | Pride
Project description:RADseq for Quercus humboldtii (Fagaceae: Quercus)
Project description:In the family Fagaceae, fertilization is delayed by several weeks to more than one year after pollination, leading to one- or two-year fruiting species depending on whether fruiting occurs in the same or the next year of flowering. Although delayed fertilization was recorded over a century ago, underlying mechanisms remain to be explored. To uncover the key genes associated with delayed fertilization, we obtain and analyze the comparative molecular phenology data over two years in one-year (Quercus glauca) and two-year fruiting species (Lithocarpus edulis).
Project description:In the family Fagaceae, fertilization is delayed by several weeks to more than one year after pollination, leading to one- or two-year fruiting species depending on whether fruiting occurs in the same or the next year of flowering. Although delayed fertilization was recorded over a century ago, underlying mechanisms remain to be explored. To uncover the key genes associated with delayed fertilization, we obtain and analyze the comparative molecular phenology data over two years in one-year (Quercus glauca) and two-year fruiting species (Lithocarpus edulis).
2024-08-16 | GSE211382 | GEO
Project description:Effects of Phyllostachys pubescens expansion on soil fungal communities in an evergreen broad-leaved forest
Project description:Nitrogen (N) remobilization is an important physiological process that supports the growth and development of trees. However, in evergreen broad-leaved tree species, such as citrus, the mechanisms of N remobilization are not completely understood. Therefore, we studied the processes of N remobilization from mature to senescing citrus leaves under low and high N nutrition.
Project description:This work aimed to characterize the molecular adaptations occurring in cork oak (Quercus suber) stems in adaptation to drought, and identify key genetic pathways regulating phellem development. One-year-old cork oak plants were grown for additional 6 months under well-watered (WW) or water-deficit (WD) conditions and main stems were targeted for transcriptomic analysis. WD had a negative impact on secondary growth, decreasing the activity of the vascular cambium and phellogen. Following a tissue-specific approach, we analyzed the transcriptional changes imposed by WD in phellem (outer bark), inner bark, and xylem, and found a global downregulation of genes related to cell division, cell wall biogenesis, lignin and/or suberin biosynthesis. Phellem and phloem showed a concerted upregulation of photosynthesis-related genes, suggesting a determinant role of stem photosynthesis in the adaptation of young plants to long-term drought. The data gathered will be important to further harness the diverse genetic background of this species for the development of optimized management practices.
Project description:Identification of genes involved in the regulation of taproot and lateral root growth in Quercus robur seedlings under drought stress and well-watered conditions. Genes involved in the regulation of taproot and lateral root growth in Quercus robur seedlings were identified using RNA-seq, miRNA-seq, and degradome-seq. The analysis focused on the gene expression, miRNA regulation, and mRNA degradation profiles of taproots and lateral roots under both drought stress and well-watered conditions. Key genes and their regulatory miRNAs were identified, along with the role of mRNA degradation pathways in response to stress, providing insights into the molecular mechanisms controlling root growth and development in oak seedlings under varying water availability.
Project description:Identification of genes involved in the regulation of taproot and lateral root growth in Quercus robur seedlings under drought stress and well-watered conditions. Genes involved in the regulation of taproot and lateral root growth in Quercus robur seedlings were identified using RNA-seq, miRNA-seq, and degradome-seq. The analysis focused on the gene expression, miRNA regulation, and mRNA degradation profiles of taproots and lateral roots under both drought stress and well-watered conditions. Key genes and their regulatory miRNAs were identified, along with the role of mRNA degradation pathways in response to stress, providing insights into the molecular mechanisms controlling root growth and development in oak seedlings under varying water availability.
Project description:Identification of genes involved in the regulation of taproot and lateral root growth in Quercus robur seedlings under drought stress and well-watered conditions. Genes involved in the regulation of taproot and lateral root growth in Quercus robur seedlings were identified using RNA-seq, miRNA-seq, and degradome-seq. The analysis focused on the gene expression, miRNA regulation, and mRNA degradation profiles of taproots and lateral roots under both drought stress and well-watered conditions. Key genes and their regulatory miRNAs were identified, along with the role of mRNA degradation pathways in response to stress, providing insights into the molecular mechanisms controlling root growth and development in oak seedlings under varying water availability.