Vegetative and reproductive leaves - 12plex-medicago-2012-06_GENOPEA3.2
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PROVIDER: PRJNA431293 | ENA |
REPOSITORIES: ENA
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Project description:12plex_medicago-2012-06 - vegetative and reproductive leaves - Transcriptome in leaves of Medicago truncatula plants during the remobilization process . Effect of a nitrogen deficiency on this process.Note that lower leaves correspond to vegetative leaves (FV) and upper leaves correspond to leaves of the reproductive part (FR). - Analysis of expression in Medicago truncatula reproductive leaves in untreated and nitrogen deficient plants during remobilization process between beginning of flowering, pod filling and the end of pod filling.
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Project description:transcriptome changes in pea leaves with sulfur deficency/sufficiency during reproductive phase.-Characterization of transcriptome changes in leaves of wild-type and PsSultr4 mutant lines (for a sulfur transporter) subjected or not to sulfur deficiency during the reproductive phase 4plex_pea_2014_01 - transcriptome changes in pea leaves with sulfur deficency/sufficiency during reproductive phase. - Role of sulfur and of the sulfate store in leaf metabolism. - Comparison of: 1- The leaf transcriptome of pea subjected or not to sulfur deficiency during the reproductive phase (S+ versus S –) 2- The leaf transcriptome of wild-type and mutant lines for a sulfur transporter (two TILLING alleles) grown under sulfur sufficient conditions : WT1/Mut1 S+ et WT2/Mut2 S+ 3- The leaf transcriptome of wild-type and mutant lines for a sulfur transporter (two TILLING alleles) grown under sulfur deficient conditions : WT1/Mut1 S+ et WT2/Mut2 S+
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Project description:Comparing transcriptomes of vegetative and reproductive plants of Selaginella nipponica
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Project description:Plants can cope with stress better if they experience a mild form of the stress before the actual \\"real\\" stress event. In Arabidopsis thaliana it is known that plants that harboured eggs of the White cabbage butterfly (Pieris brassicae) before larval feeding can defend better against the herbivore stress. The main aim of the experiment was to compare the priming effect induced by insect egg deposition of Pieris brassicae between vegetative and reproductive (first open flowers) Arabidopsis thaliana plants on the transcriptional level. We used a full factorial setup consisting of a) untreated control plants , b) plants which experienced eggs for 6 days without larval feeding after that period, c) plants which experienced no eggs before larval feeding for 24 hours d) plants which experienced eggs for 6 days and larval herbivory for 24 hours. This setup was conducted with 6 week old vegetative plants and 10 week old reproductive plants were the first flowers were open. For all treatments leaf tissue from the leaves that experienced egg oviposition and/or larval feeding were collected. From reproductive plants flower buds were collected as well.
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Project description:In mammals, it is well known that DNA methylation has important roles during aging. However, age-related DNA methylation changes during phase transitions largely remain unclear in plants. Moso bamboo needs a very long time to transition from vegetative to floral phase. To comprehensively investigate the influence of DNA methylation on aging, we present here a distinctive single-base-resolution DNA methylation profile using both high-throughput bisulfite sequencing (BS-Seq) and single-molecule nanopore-based DNA sequencing, which covers the long period of vegetative growth and transition to flowering of moso bamboo’s development. We discovered that CHH methylation gradually accumulated from vegetative to reproductive growth in a time-dependent fashion. Importantly, DMR (differential DNA methylation) correlating with chronological aging occurred preferentially at both transcription start sites (TSS) and transcription termination sites (TTS). Genes with CG methylation changes showed enrichment of gene ontology (GO) categories in ‘vegetative to reproductive phase transition of meristem’. In addition, In combination with mRNA sequencing (RNA-Seq) revealed that DNA methylation in promoter, intron, and exon has different roles in regulating gene expression. Finally, circular RNA sequencing (circRNA-Seq) revealed that flanking introns of circRNAs show hypermethylation. Further analysis revealed that these flanking introns were enriched in LTR-retrotransponsons. Together, observations in this study provide insights about dynamic DNA methylation and circRNAs landscape with chronological ages, which paves the way to further study the impact of epigenetic factors on flowering in moso bamboo.
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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.
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Project description:Plants initially undergo a period of vegetative development, in which it produces leaves from shoot apical meristem (SAM) and roots from the root apical meristem. Later in development, the SAM undergoes a change in fate and enters reproductive development called as floral transition, producing flowers and seeds. Our understanding of the molecular and genetic mechanisms that underlie reproductive development in plants has increased tremendously in the past decade, essentially through the work on Arabidopsis. In this study, we have analyzed the spatial and temporal gene expression in various tissues/organs and developmental stages of rice using microarray technology to identify the genes differentially expressed during various stages of reproductive development. Keywords: Development time course
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