Project description:Moso bamboo (Phyllostachys edulis (Carrière) J. Houz.), ) is one of the most importantessential economic bamboo species in China. However, the woods quality and yield of bamboo shoots were significantly threatened by diverse environmental conditions. significantly threaten the quality of wood and yield of bamboo shoots. In this study, to explore the molecular mechanism of abiotic stress response, we report the RNA-seq analyses of mosoMoso bamboo treated with drought, salt, SA and ABA at three -time courses. A total of 224.4 Gb clean data were generate in to explore the molecular mechanism of the abiotic stress response. The full-length transcriptome sequencing of these four treatments generated a total of 224.4 Gb data after quality trimming, and approximately 5.83Gban average of 6.615 Gb clean data were per sample was generated in per sample. The comparative analyses of the generated transcriptome data in this study will provide a valuable resource for identifying regulatory genes and potential pathways involved in various abiotic stresses in mosoMoso bamboo.
Project description:Dendrocalamus latiflorus Munro (D. latiflorus) is a woody clumping bamboo with rapid shoot growth. Both genetic transformation and CRISPR-Cas9 gene editing techniques are available for D. latiflorus, enabling reverse genetic approaches. Thus, D. latiflorus has the potential to be a model bamboo species. However, the genome sequence of D. latiflorus has remained unreported due to its polyploidy and large genome size. Here, we sequenced the D. latiflorus genome and assembled it into three allele-aware subgenomes (AABBCC), representing the largest genome of a major bamboo species. We assembled 70 allelic chromosomes (2,737 Mb) for hexaploid D. latiflorus using both single-molecule sequencing from the Pacific Biosciences (PacBio) Sequel platform and chromosome conformation capture sequencing (Hi-C). Repetitive sequences comprised 52.65% of the D. latiflorus genome. We annotated 135,231 protein-coding genes in the genome based on transcriptomes from eight different tissues. Transcriptome sequencing using RNA-Seq and PacBio single-molecule real-time (SMRT) long-read isoform sequencing (Iso-Seq) revealed highly differential alternative splicing (AS) between non-abortive and abortive shoots, suggesting that AS regulates the abortion rate of bamboo shoots. This high-quality hexaploid genome and comprehensive strand-specific transcriptome datasets for this Poaceae family member will pave the way for bamboo research using D. latiflorus as a model species.
Project description:Bamboo is a large Poaceae perennial with 1,642 species worldwide. We reported single-cell transcriptomes of 14,279 filtered single cells derived from the basal root tips of Moso bamboo.
Project description:Bamboo represents the only major lineage of grasses that is native to forests and is one of the most important non-timber forest products in the world. Moso bamboo is a large woody bamboo that has ecological, economic and cultural value in Asia and accounts for ~70% of the total bamboo growth area (Peng et al., 2013). In the aspect of epigenetics of Moso bamboo,the total genomic DNA methylation rates in Moso bamboo at different chronological ages were significantly different (Yuan et al., 2014). Those show that the flowering of Moso bamboo are closely related to epigenetic modification. However, DNA methylation in single base resolution has never been reported in moso bamboo. In this study, leaves from three-week bamboo, one-year bamboo, flower in next year bamboo, flowering bamboo and Flower florets was used for bisulfite sequencing (BS-seq), and RNA-Seq. Genome-wide methylation profile and gene expression analysis were constructed to reveal the factors to regualte the phase transition from vegetative to reproductive growth in moso bamboo.
Project description:Bamboo represents the only major lineage of grasses that is native to forests and is one of the most important non-timber forest products in the world. Moso bamboo is a large woody bamboo that has ecological, economic and cultural value in Asia and accounts for ~70% of the total bamboo growth area (Peng et al., 2013). In the aspect of epigenetics of Moso bamboo,the total genomic DNA methylation rates in Moso bamboo at different chronological ages were significantly different (Yuan et al., 2014). Those show that the flowering of Moso bamboo are closely related to epigenetic modification. However, DNA methylation in single base resolution has never been reported in moso bamboo. In this study, leaves from three-week bamboo, one-year bamboo, flower in next year bamboo, flowering bamboo and Flower florets was used for bisulfite sequencing (BS-seq), and RNA-Seq. Genome-wide methylation profile and gene expression analysis were constructed to reveal the factors to regualte the phase transition from vegetative to reproductive growth in moso bamboo.
Project description:Moso bamboo is a fast-growing bamboo species with high economic, social and cultural value. The method of transplanting moso bamboo seedlings for afforestation has become a more economical and effective method. The effect of light on the growth of plant seedlings is mainly reflected in the regulation of different light quality on the growth and development of seedlings, including light morphogenesis, photosynthesis and secondary metabolites. Therefore, studying the effects of specific wavelength light on the physiology and proteome of moso bamboo seedlings will play an important role in growing seedlings and seed cultivation of moso bamboo. Here, moso bamboo seeds were germinated in the dark and then were transferred to the blue and red-light conditions. After 14 days, we observed the effects of different light treatments on the growth and development of seedlings, and then compared and analyzed their proteome.
Project description:Endophytic bacteria influence plant growth and development and therefore are an attractive resource for applications in agriculture. However, little is known about the impact of these microorganisms on secondary metabolite (SM) production by medicinal plants. Here we assessed, for the first time, the effects of root endophytic bacteria on the modulation of SMs in the medicinal plant Lithospermum officinale (Boraginaceae family), with a focus on the naphthoquinones alkannin/shikonin (A/S). The study was conducted using a newly developed in vitro system as well as in the greenhouse. Targeted and non-targeted metabolomics approaches were used and supported by expression analysis of the gene PGT, encoding a key enzyme in the A/S biosynthesis pathway. Three bacterial strains, Chitinophaga sp. R-73072, Xanthomonas sp. R-73098 and Pseudomonas sp. R-71838 induced a significant increase of diverse SMs, including A/S, in L. officinale in both systems, demonstrating the strength of our approach for screening A/S derivative-inducing bacteria. Our results highlight the impact of root-endophytic bacteria on secondary metabolism in plants and indicate that production of A/S derivatives in planta likely involves cross-modulation of different metabolic pathways that can be manipulated by bacterial endophytes.
Project description:Auxin is essential for plant growth and development by altering downstream gene expression. Although large progresses have been made on auxin-concentration, distribution and signaling pathways in model plants like Arabidopsis and rice, little is known in moso bamboo which belongs to grass family, and has great economic and social value. Here we performed genome-wide analysis of the key components related to auxin action, and identified 13 YUCCA genes for auxin synthesis, 14 PIN-FORMED/PIN-like (PIN/PILS) proteins 7 AUXIN1/LIKE-AUX1 (AUX1/LAX) family members for auxin transport, 10 auxin binding factors (AFB) for auxin perception, 43 auxin/indole-3-aceticacid (AUX/IAA) and 41 auxin response transcription factors (ARF) genes for auxin signaling in moso bamboo genome. We further performed phylogenetic analysis of those auxin action related genes from Arabidopsis, Oryza sativa and moso bamboo. To know those genes’ ability to response exogenous auxin and to generate a comprehensive transcriptome overview of auxin response in moso Bamboo, we performed RNA_seq analysis. Our data showed that auxin regulates genes related its biosynthesis, transport, signaling. Moreover, we present the interaction between auxin and other phytohormones at the level of transcription. In summary, we identified the key gene families involved in the auxin action pathways in moso bamboo, and generated a transcriptional overview of the auxin response in moso bamboo. Our data open up an opportunity to uncover the precise roles of auxin action pathways in this important species.