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SRP066454
Glycine max
6 Downloadable Samples
Illumina HiSeq 2000
Description
To understand the function of soybean endosperm
Publication Title
No associated publication
Sample Metadata Fields
Specimen part
View Samples- Arabidopsis thaliana
- 6 Downloadable Samples
Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Pollen is the male gametophyte of land plants. Proper development and maturation of pollen is necessary for the successful reproduction of seed plants. This process involves sophisticated coordination between sporophytic and gametophytic tissues in anthers. To advance the mechanistic studies of anther development, additional players need to be discovered for a comprehensive understanding of the underlying regulatory network. Here we show that the Arabidopsis dual specificity tyrosine phophorylated and regulated kinase (DRYK), AtYAK1, is essential for development of rosette leaves and the male but not female gametophyte in Arabidopsis. Arabidopsis mutant plants carrying a mutation in AtYAK1 produce developmentally stalled microspores, likely because of the defects in the two consecutive mitosis steps in the post-meiotic maturation process of pollen. The mutation of AtYAK1 has a significant effect on gene expression programs in developing pollen. Transcritpome analysis of atyak1 revealed downstream genes in families of protein kinases, transporters and transcription factors, which potentially contribute to pollen development. This study represents the first molecular characterization of DYRK in the plant kingdom. Our results also imply that the regulation of cytokinesis by DYRKs is evolutionally conserved in fungus, fruit fly, animals and plants.
Publication Title
No associated publication
Sample Metadata Fields
Age, Specimen part
View Samples- Arabidopsis thaliana
- 4 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Transcriptome analysis has revealed a light-regulated WD (tryptophan and aspartate)-containing protein, LWD1. LWD1 and LWD2 share greater than 90% amino acid sequence homology. The lack of phenotype changes in the lwd1 or lwd2 single mutant implies that the proteins function redundantly. The lwd1lwd2 double mutant, however, has an early flowering phenotype under both long-day (LD) and short-day (SD) conditions. Functional complementation experiment revealed that LWDs are indeed responsible for the defect in photoperiod sensing in lwd1lwd2 double mutant plants. The expression of LWD1 exhibits a diurnal pattern and peaks before dawn. The period length of oscillator (CCA1, LHY, TOC1 and ELF4) and output (CCR2 and CAB2) genes in the lwd1lwd2 double mutant is significantly shorter than that in wild-type Arabidopsis under free running condition. Under entrainment conditions, the expression phase of oscillator (CCA1, LHY, TOC1 and ELF4) and output (GI, FKF1, CDF1, CO and FT) genes shifts ~3 hr forward in the lwd1lwd2 double mutant. Our data indicated that the early flowering phenotype in lwd1lwd2 plants is contributed by the significant phase shift of CO and, therefore, an increased expression of FT before dusk under SD conditions. Our data imply that LWD1/LWD2 proteins function in close proximity to the circadian oscillators for the regulation of photoperiod sensing.
Publication Title
Two new clock proteins, LWD1 and LWD2, regulate Arabidopsis photoperiodic flowering.
Sample Metadata Fields
No sample metadata fields
View Samples- Arabidopsis thaliana
- 4 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Arabidopsis emf2 mutants bypass vegetative development and flowering upon seed germination. We introduced a broccoli BoEMF2.1 gene into emf2 mutants and obtained rescued emf2 plants that harbored 35S::BoEMF2.1. We found that BoEMF2.1 can partially rescue the phenotype of emf2 to that of WT. We used microarrays to study the global program of gene expression and to identify genes misexpressed in the Arabidopsis emf2 mutant that had been rescued by 35S::BoEMF2.1.
Publication Title
Molecular and functional characterization of broccoli EMBRYONIC FLOWER 2 genes.
Sample Metadata Fields
Age, Specimen part
View Samples- Arabidopsis thaliana
- 4 Downloadable Samples
- Illumina HiSeq 2000
Description
Genome-wide transcriptomes of the bam1, bam2 single and bam1 bam2 double mutants were sequenced and analyzed to uncover locus-associated gene expression variations, providing support for different fates of the duplicated BAM1 and BAM2 genes, including sub-/neofunctionalization after duplication.
Publication Title
No associated publication
Sample Metadata Fields
Specimen part
View Samples- Arabidopsis thaliana
- 307 Downloadable Samples
- Illumina HiSeq 2000
Description
Time-course analysis of shade responsive genes in Col and 12 mutants.
Publication Title
No associated publication
Sample Metadata Fields
Specimen part, Treatment
View Samples- Arabidopsis thaliana
- 182 Downloadable Samples
- Illumina HiSeq 2000
Description
Time-course data of shade avoidance in NAM parents
Publication Title
No associated publication
Sample Metadata Fields
Specimen part, Treatment
View Samples- Zea mays
- 38 Downloadable Samples
- Illumina HiSeq 2500
Description
Developmental gradient of expanding maize leaf
Publication Title
No associated publication
Sample Metadata Fields
Age, Specimen part
View Samples- Zea mays
- 7 Downloadable Samples
- Illumina HiSeq 3000
Description
In order to study the gene expression of pollen tubes as they grow in silk after pollination, we pollinated maize W22 silks with maize B73 pollen. The recent (2016) advent of the W22 genome assembly and annotation allows us to single out RNA-seq reads originating from the pollen tubes. B73 pollen, W22 silk and B73 seedling controls were sequenced as well.
Publication Title
No associated publication
Sample Metadata Fields
Specimen part
View Samples- Arabidopsis thaliana
- 24 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Powdery mildew, caused by the fungus Blumeria graminis (DC) Speer, is one of the most important foliar diseases of cereals worldwide. It is an obligate biotrophic parasite, colonising leaf epidermal cells to obtain nutrients from the plant cells without killing them. Syringolin A (sylA), a circular peptide secreted by the phytopathogenic bacterium Pseudomonas syringae pv. syringae, triggers a hypersensitive cell death reaction (HR) at infection sites when sprayed onto powdery mildew infected wheat which essentially eradicates the fungus. The rational was to identify genes whose expression was specifically regulated during HR, i.e. genes that might be involved in the switch of compatibility to incompatibility.<br></br>Powdery mildew-infected or uninfected plants were treated with syringolin two days after infection and plant material for RNA extraction was collected at 0.5, 1, 2, 4, 8, 12 hours after treatment (hat), resulting in an early (2 and 4 hat) and late pool (8 and 12 hat). Plant material that was uninfected prior to syringolin treatment was collected 8 and 12 hat (late pool of uninfected plant material), and 1 hat, respectively.
Publication Title
Transcriptional changes in powdery mildew infected wheat and Arabidopsis leaves undergoing syringolin-triggered hypersensitive cell death at infection sites.
Sample Metadata Fields
Compound, Time
View Samples