Pinus pinaster
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA163355 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:cDNA Microarray 2: Compression Xylem vs. Opposite Xylem
| PRJNA163357 | ENA
Project description:This SuperSeries is composed of the following subset Series: GSE37678: cDNA Microarray 1: Compression Xylem vs. Opposite Xylem GSE37736: cDNA Microarray 2: Compression Xylem vs. Opposite Xylem Refer to individual Series
2012-05-05 | E-GEOD-37789 | biostudies-arrayexpress
Project description:Compression Xylem vs. Opposite Xylem
| PRJNA163351 | ENA
Project description:The within-tree variation in wood properties constitutes an exceptional model to study the mechanisms that adjust the different biosynthetic pathways providing substrates with the massive and variable demands of different biosynthetic reactions of cell wall polymers. Although a few genes have been reported as differentially expressed in differentiating compression wood compared to normal or opposite wood, the expression of a larger set of genes is expected to change due the broad range of features that distinguish this reaction wood. By combining the construction of different cDNA libraries with microarray analyses, using samples from different Pinus pinaster provenances collected in different years and geographic locations, we have identified a total of 496 genes that change their expression during differentiation of compression wood (331 up-regulated and 165 down-regulated compared to opposite wood). Consistent with the well-known structural and chemical characteristics of compression wood, a large number of genes involved in the biosynthesis of cell wall components were shown to be up-regulated during compression wood differentiation, including genes involved in synthesis of cellulose, hemicellulose, lignin and lignans. In particular, further analysis of a set of these genes involved in providing S-adenosylmethionine, ammonium recycling, lignin and lignans biosynthesis showed parallel expression profiles to levels of lignin accumulation in cells undergoing xylogenesis in vivo and in vitro. The comparative transcriptomic analysis of compression and opposite wood formation in this work have revealed a broad spectrum of coordinated transcriptional modulation of biosynthetic reactions for different cell wall polymers associated to within-tree variations in softwood structure and composition. In particular, it suggest the occurrence of a mechanism that modulates at transcriptional level genes encoding enzymes involved in S-adenosylmethionine synthesis and ammonium assimilation with coniferyl alcohol demand for lignin and lignan synthesis, as a key metabolic requirement in cells undergoing lignification. Two-condition experiment including dye-swap experiments, Compression Differentiating Xylem vs. Opposite Differentiating Xylem. Biological replicates: 4 compression xylem, 4 opposite xylew, harvested from four different individual pine trees. Two replicates per array.
2012-05-05 | E-GEOD-37678 | biostudies-arrayexpress
Project description:The within-tree variation in wood properties constitutes an exceptional model to study the mechanisms that adjust the different biosynthetic pathways providing substrates with the massive and variable demands of different biosynthetic reactions of cell wall polymers. Although a few genes have been reported as differentially expressed in differentiating compression wood compared to normal or opposite wood, the expression of a larger set of genes is expected to change due the broad range of features that distinguish this reaction wood. By combining the construction of different cDNA libraries with microarray analyses, using samples from different Pinus pinaster provenances collected in different years and geographic locations, we have identified a total of 496 genes that change their expression during differentiation of compression wood (331 up-regulated and 165 down-regulated compared to opposite wood). Consistent with the well-known structural and chemical characteristics of compression wood, a large number of genes involved in the biosynthesis of cell wall components were shown to be up-regulated during compression wood differentiation, including genes involved in synthesis of cellulose, hemicellulose, lignin and lignans. In particular, further analysis of a set of these genes involved in providing S-adenosylmethionine, ammonium recycling, lignin and lignans biosynthesis showed parallel expression profiles to levels of lignin accumulation in cells undergoing xylogenesis in vivo and in vitro. The comparative transcriptomic analysis of compression and opposite wood formation in this work have revealed a broad spectrum of coordinated transcriptional modulation of biosynthetic reactions for different cell wall polymers associated to within-tree variations in softwood structure and composition. In particular, it suggest the occurrence of a mechanism that modulates at transcriptional level genes encoding enzymes involved in S-adenosylmethionine synthesis and ammonium assimilation with coniferyl alcohol demand for lignin and lignan synthesis, as a key metabolic requirement in cells undergoing lignification. Two-condition experiment including dye-swap experiments, Compression Differentiating Xylem vs. Opposite Differentiating Xylem. Biological replicates: 4 compression xylem, 4 opposite xylew, harvested from four different individual pine trees. Two replicates per array.
2012-05-05 | E-GEOD-37736 | biostudies-arrayexpress
Project description:Compression (CW) and opposite wood (OW) are formed in the uniderside and upperside of conifer branches respectively in response to gravity stress. We investigated genes differentially transcribed between the underside and upside of radiate pine branches using cDNA microarrays with a view to plant gravitropism. Six trees with well-developed branches were selected from a radiata pine commercial plantation (aged 13 years) located at Bondo, NSW, Australia (35º 16' 44.04 S, 148º 26' 54.66 E). The largest branch from each tree was further selected for sampling, including three branches sampled in April 2007 (autumn in Bondo) and three sampled in October 2007 (spring). Bark was removed from the base part (about 10 cm in length) of each branch. Developing xylem tissues were scraped from the exposed upperside and underside surface respectively with a sharp chisel. Samples were immediately placed into 50 ml BD FalconTM tubes filled with liquid nitrogen. Gene expression in the underside and upperside of branches was compared using radiata pine cDNA microarrays.
2014-05-30 | E-GEOD-47167 | biostudies-arrayexpress
Project description:Compression (CW) and opposite wood (OW) are formed in the uniderside and upperside of conifer branches respectively in response to gravity stress. We investigated genes differentially transcribed between the underside and upside of radiate pine branches using cDNA microarrays with a view to plant gravitropism.
2014-05-30 | GSE47167 | GEO
Project description:cDNA Microarray 1: Crown developing xylem vs. Base developing xylem
| PRJNA670491 | ENA
Project description:cDNA Microarray 2: Crown developing xylem vs. Base developing xylem
| PRJNA670495 | ENA
Project description:Wood maturation produces two distinct wood tissues: juvenile wood (JW) and mature wood (LW), which are the major cause of wood qaulity variation within a tree. We investigate transcriptome reorganization during wood maturation process in radiata pine using a newly developed 18k cDNA microarrays. Developing xylem tissues from nine sampled trees at 5- and 13-year-old each were randomly divided into three groups with three trees each. Total RNA samples extracted from three trees within a group were pooled at equal amount before using for microarray experiments. Using this pooling strategy three biological replicates were formed for each microarray experiment. Dye swap was applied in each biological replicate. Comparisons between JW and MW in spring (EW) and autumn (LW) were arranged in two separate microarray experiments: juvenile earlywood (JE) vs. mature earlywood (ME), juvenile latewood (JL) vs. mature latewood (ML)
2011-06-01 | E-GEOD-20535 | biostudies-arrayexpress