Ontology highlight
ABSTRACT:
PROVIDER: PRJNA912718 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR22753228_1.fastq.gz | Fastqsanger.gz | |||
| SRR22753228_2.fastq.gz | Fastqsanger.gz | |||
| SRR22753229_1.fastq.gz | Fastqsanger.gz | |||
| SRR22753229_2.fastq.gz | Fastqsanger.gz | |||
| SRR22753230_1.fastq.gz | Fastqsanger.gz |
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Project description:We have sequenced the whole genome of Cleome hassleriana by NGS [SRA accession number SRA058749] and build a reference sequence for this genome. In order to improve quality of gene models, a mix transcriptome sample extracted from the bud, leaf, petiole, stems and flowers of Cleome.
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Project description:We have sequenced the whole genome of Cleome hassleriana by NGS [SRA accession number SRA058749] and build a reference sequence for this genome. In order to improve quality of gene models, a mix transcriptome sample extracted from the bud, leaf, petiole, stems and flowers of Cleome. A mixed RNA pool extracted from the tissues of bud, leaf, petiole, stems and flower is sequenced for Cleome hassleriana.
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Project description:Floral Nectaries Many plants secrete a rich floral nectar to entice visitation by insect and avian pollinators. In turn, these pollinators transfer pollen between flowers increasing plant fecundity. The nectary is the floral organ that secretes nectar into the base of the flower. The size and abundance of the ornamental tobacco nectaries (Nicotiana sp.) will permit us to isolate up to several grams of nectaries at each stage to obtain the necessary amounts of RNA for probe preparation. Our primary goals to understand the biochemistry the nectary, so that we can manipulate nectary function to increase pollinator visitation. We have previously conducted an EST study and have identified 13596 cDNAs from three different stages of nectary development (Stage 6, immature, presecretory nectaries; Stage 12, mature nectaries at floral anthesis; and nectaries, 44 hours after fertilization. In our efforts to evaluate the transcriptional program for the Nicotiana nectary we are proposing to evaluate nectary mRNAs by hybridization with the potato microarrays. We have preliminary evidence that wholesale transcriptional reprogramming (60% of the transcriptome) occurs during nectary maturation and again following fertilization. Our goal is to understand these processes at a biochemical level so that we can begin manipulating nectary function to improve nectar quality and quantity thereby increasing the attractiveness of flowers to insect pollinators. Such improvements have the potential to result in increases in insect visitation, seedset, and ultimately yield for insect pollinated crops. We are also making significant efforts to understand the restructuring of the nectary during its lifecycle. Many changes occur during nectary development and the observed transcriptional reprogramming makes sense the when these many changes are accounted for. Keywords: Loop design
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Project description:Many flowering plants attract pollinators by offering a reward of floral nectar. Remarkably, the molecular events involved in the development of nectaries, the organs that produce nectar, as well as the synthesis and secretion of nectar itself, are poorly understood. Indeed, to date, no genes have been shown to directly affect the de novo production or quality of floral nectar. To address this gap in knowledge, the ATH1 Affymetrix GeneChip array was used to systematically investigate the Arabidopsis nectary transcriptome to identify genes and pathways potentially involved in nectar production. In this study, we identified a large number of genes differentially expressed between secretory lateral nectaries and non-secretory median nectary tissues, as well as between mature lateral nectaries (post-anthessis) and immature lateral nectary tissue (pre-anthesis). To identify genes that are specifically upregulated in nectary tissues, and therefore may contribute to nectar production, we compared individual nectary samples (ILN, MLN & MMN) with 51 non-nectary reference tissues (downloaded .cel files from other studies). 270 genes were identified as being significantly upregulated in nectaries. The expression patterns for multiple genes were also confirmed via RT-PCR. The co-normalized RMA expression data (i.e., our own 8 nectary samples and 51 samples downloaded from GEO) are available as a supplementary file at the foot of this record.
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Project description:Many flowering plants attract pollinators by offering a reward of floral nectar. Remarkably, the molecular events involved in the development of nectaries, the organs that produce nectar, as well as the synthesis and secretion of nectar itself, are poorly understood. Indeed, to date, no genes have been shown to directly affect the de novo production or quality of floral nectar. To address this gap in knowledge, the ATH1 Affymetrix GeneChip array was used to systematically investigate the Arabidopsis nectary transcriptome to identify genes and pathways potentially involved in nectar production. In this study, we identified a large number of genes differentially expressed between secretory lateral nectaries and non-secretory median nectary tissues, as well as between mature lateral nectaries (post-anthessis) and immature lateral nectary tissue (pre-anthesis).
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