Ontology highlight
ABSTRACT:
PROVIDER: PRJNA961327 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR24295200.fastq.gz | Fastqsanger.gz | |||
| SRR24295201.fastq.gz | Fastqsanger.gz | |||
| SRR24295202.fastq.gz | Fastqsanger.gz | |||
| SRR24295203.fastq.gz | Fastqsanger.gz | |||
| SRR24295204.fastq.gz | Fastqsanger.gz |
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Project description:A greenhouse experiment was conducted at the Federal University of Alagoas in Maceio, Brazil. One-eye sett of sugarcane was planted in 20 liters plant pots, arranged in a completely randomized design and cultivated for 5 months before water privation.
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Project description:Summary The expression profile of internodes from high brix plant was compared to internodes from low brix plants. Mature (In9), intermediate (In5) and immature internodes (In1) were collected from two different Progenies and immediately frozen in liquid nitrogen. Total RNA was extracted using Trizol. Progeny 1 was derived from two intra-specific polycrosses, one among Saccharum officinarum genotypes and the other combining Saccharum spontaneum genotypes. For each generation, 500 individuals were sampled for brix content and gene expression. The extreme segregants were selected for further analysis. The F3 hybrid individuals selected for molecular studies were planted in a field in single rows of 5 m using standard sugarcane cultivation practices. Brix readings and tissue samples were collected very early in the season, and in March of the following year, when plants were 10 months old. The soluble solids (brix) content of mature internodes of each sugarcane stalk was measured with a portable refractometer (N1 model, ATAGO, Japan). Individuals or pools of eight individuals had their tissues collected and RNA extracted. Progeny 2 was derived from a cross between two commercial varieties (SP80-180 x SP80-4966). Five hundred sugarcane F1 plants were field-grown. The stem sugar content from the different plants showed a normal distribution, and seven plants with extreme brix values were collected. Keywords: Expression profiling by array
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Project description:Summary The expression profile of internodes from high brix plant was compared to internodes from low brix plants. Mature (In9), intermediate (In5) and immature internodes (In1) were collected from two different Progenies and immediately frozen in liquid nitrogen. Total RNA was extracted using Trizol. Progeny 1 was derived from two intra-specific polycrosses, one among Saccharum officinarum genotypes and the other combining Saccharum spontaneum genotypes. For each generation, 500 individuals were sampled for brix content and gene expression. The extreme segregants were selected for further analysis. The F3 hybrid individuals selected for molecular studies were planted in a field in single rows of 5 m using standard sugarcane cultivation practices. Brix readings and tissue samples were collected very early in the season, and in March of the following year, when plants were 10 months old. The soluble solids (brix) content of mature internodes of each sugarcane stalk was measured with a portable refractometer (N1 model, ATAGO, Japan). Individuals or pools of eight individuals had their tissues collected and RNA extracted. Progeny 2 was derived from a cross between two commercial varieties (SP80-180 x SP80-4966). Five hundred sugarcane F1 plants were field-grown. The stem sugar content from the different plants showed a normal distribution, and seven plants with extreme brix values were collected. Keywords: Expression profiling by array Total RNA from internodes pool from high brix plants and low brix plants was hybridized to dual channel arrays. Internodes from the same stage of development and from the same progeny were compared. The quantification of each hybridization was submitted in two files, one for each slide side (technical replicates).
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Project description:Sugarcane is an economically important crop contributing to the world’s sugar and ethanol production with 80% and 40%, respectively. In recent years, the growing demands for sugar and ethanol production has prompted the necessity to increase sugarcane productivity through conventional breeding programs. However, sugarcane breeders have encountered several difficulties to raise productivity, mainly due to its complex genetics. Sugarcane has a polyploidy genome, with many varieties being aneuploidy. Today, the majority of the planted sugarcane cultivars are complex hybrids derived mainly from crosses between Saccharum officinarum and S. spontaneum. Therefore, proteomics can provide some insight into deciphering gene regulation and changes in carbon metabolism and sucrose accumulation in the culms at different stages of plant development. The aim of this work was to compare the quantitative changes of proteins in sugarcane culms, during plant growth and sucrose accumulation. Total proteins were isolated from both, juvenile and maturing internodes at three stages of plant development. Label free shotgun proteomics was used for protein profiling and quantification. The internodes 5 (I5) and 9 (I9) of 4, 7 and 10 month-old-plants (4M, 7M and 10M, respectively) were harvested and used for proteomic analyses. To mimic field conditions of sucrose accumulation during sugarcane maturation, we stopped watering 10M plants for 10 days. An average of 1130 proteins, unique and differentially expressed across all ages were identified and quantified. Proteins were categorized within 27 functional groups, related to biological process. The patterns of expression for some categories, such as cellular amino acids, metabolic processes, secondary metabolic processes and translation were down-regulated in the immature internode (I5-10M), while up-regulated in the mature I9-10M. We observed an increase in the abundance of several enzymes of the glycolytic pathway and isoforms of alcohol dehydrogenase (ADH) and pyruvate decarboxylase (PDC), in the juvenile stages of development of I9. These changes in enzymes contents indicates that at the early stages of internode development, hypoxia is increasing the glycolytic and ethanolic fermentation pathways, in order to supply ATP for plant growth and NAD+ for mitochondrial respiration, which might be impaired by the low oxygen availability inside the culm.
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