Wood samples
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA807869 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR18070000.fastq.gz | Fastqsanger.gz | |||
| SRR18070100.fastq.gz | Fastqsanger.gz | |||
| SRR18070200.fastq.gz | Fastqsanger.gz | |||
| SRR18070001.fastq.gz | Fastqsanger.gz | |||
| SRR18070101.fastq.gz | Fastqsanger.gz |
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Project description:Wood stiffness is the most important wood quality trait of forest trees for structural timber production. We investigated genes differentially transcribed in radiate pine trees with distinct wood stiffness using bulked segregant analysis (BSA) and cDNA microarrays. Transcript accumulation in earlywood (EW) and latewood (LW) of high (HS) and low stiffness (LS) trees in two progeny trials was compared.
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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
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Project description:Wood density is a foundamental quality trait for structural timber, bioenergy and pulp industries. We investigated genes differentially transcribed in radiate pine juvneile trees with distinct wood density using cDNA microarrays.
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Project description:Wood density is a foundamental quality trait for structural timber, bioenergy and pulp industries. We investigated genes differentially transcribed in radiate pine juvneile trees with distinct wood density using cDNA microarrays. Radiata pine trees were selected from a progeny trial planted at Flynn, Australia. Based on the gravitical measurement of wood cores, 12 families with highest and lowest density each were selected, representing two groups of trees with contrasting wood density. One individual with higher or lower density were further sampled in each selected family. Developing xylem tissues of selected trees were sampled in autumn (April) when latewood (LW) was formed. The xylem tissues were scraped at breast height with a sharp chisel after the bark was removed. Wood cores of the sampled trees were further measured using SilviScan 2. Total RNA extracted from ten developing xylem tissues with confirmed distinct density in each tree group were pooled into two bulks (five trees each), and the two bulks of HD were compared with two LD bulks in the microarray experiment (named the bulk experiment). Six developing xylem tissues with the most distinct density from each tree group were further chosen. Six xylem tissues with HD were individually compared with bulked six xylem tissues with LD in the second microarray experiment (named individual experiment). These two different pooling strategies can partly minimize the genetic variation among different genotypes. Dye swaps were applied in each biological replicate.
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Project description:Wood stiffness is the most important wood quality trait of forest trees for structural timber production. We investigated genes differentially transcribed in radiate pine trees with distinct wood stiffness using bulked segregant analysis (BSA) and cDNA microarrays. Transcript accumulation in earlywood (EW) and latewood (LW) of high (HS) and low stiffness (LS) trees in two progeny trials was compared. Radiata pine trees used for microarray experiment were selected from two progeny trials planted at Flynn and Kromelite, Australia. Based on the IML-based MOE measurement, five families with highest and lowest MOE each were selected from each trial, which represented two segregant populations with contrasting wood stiffness. Two individuals from each selected family were further sampled. Developing xylem tissues of selected trees in Flynn trial were sampled in spring (October) and autumn (April), representing earlywood (EW) and latewood (LW) of juvenile aged trees, respectively. Collection of xylem tissues from Kromelite trial was arranged in summer (late November) when latewood (LW) was formed. The xylem tissues were scraped at breast height with a sharp chisel after the bark was removed. In Flynn trial EW and LW tissues were collected from the same sampled trees on opposite sides of the trunk. Transcript accumulation was compared in trees with highest (HS) and lowest stiffness (LS) using xylem samples from Flynn collected in spring (EW) and autumn (LW), as well as Kromelite in summer (LW), respectively. Bulked segregant analysis (BSA) was used for the experiment design. Total RNA samples extracted from the five trees with HS were pooled at equal amount, and compared to the bulked five individuals with LS. This pooling strategy can partly minimize the genetic variation among different genotypes. Dye swaps were applied in each biological replicate.
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