GEO DataSets

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Zea mays

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL15463 GPL9361

40 Samples

Download data: TXT

(Submitter supplied) Inflorescence architecture in cereal crops directly impacts yield potential through regulation of seed number and harvesting ability. Extensive architectural diversity found in inflorescences of grass species is due to spatial and temporal activity and determinacy of meristems, which control the number and arrangement of branches and flowers, and underlie plasticity. Timing of the floral transition is also intimately associated with inflorescence development and architecture. more...

Organism:

Setaria viridis

Type:

Expression profiling by high throughput sequencing; Other

Platforms:

GPL23621 GPL29001

26 Samples

Download data: RDATA, TXT, XLSX

(Submitter supplied) KNOTTED1(KN1)-like homeobox (KNOX) transcription factors function in plant meristems, self-renewing structures consisting of stem cells and their immediate daughters. Despite their importance for plant development, the genomic network targeted by KNOX proteins is poorly understood. Using ChIP-seq, we defined the KN1 cistrome in maize inflorescences and found that KN1 binds to several thousand loci. To understand how these binding occupancies correlate with changes in transcriptional regulation, we performed RNA-seq on immature ears and tassels, and compared expression profiles between normal and loss-of-function kn1 plants, in addition to immature leaves from normal and gain-of-function Kn1 plants. We found that 643 of the KN1 targets were modulated in one or multiple tissues, with a strong enrichment for transcription factors (including other homeobox genes) and genes participating in several hormonal pathways, most significantly auxin, implicating KN1 at the crossroads of plant hormone signaling. The loss-of-function kn1 phenotype is reminiscent of auxin mutants and kn1 mis-expression in leaves correlates with increased auxin signaling. Our results demonstrate that KN1 plays a key role in orchestrating the upper levels of a hierarchical gene regulatory network that impacts plant meristem identity and function.

Organism:

Zea mays

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9361

6 Samples

Download data: BED

(Submitter supplied) KNOTTED1(KN1)-like homeobox (KNOX) transcription factors function in plant meristems, self-renewing structures consisting of stem cells and their immediate daughters. Despite their importance for plant development, the genomic network targeted by KNOX proteins is poorly understood. Using ChIP-seq, we defined the KN1 cistrome in maize inflorescences and found that KN1 binds to several thousand loci. To understand how these binding occupancies correlate with changes in transcriptional regulation, we performed RNA-seq on immature ears and tassels, and compared expression profiles between normal and loss-of-function kn1 plants, in addition to immature leaves from normal and gain-of-function Kn1 plants. We found that 643 of the KN1 targets were modulated in one or multiple tissues, with a strong enrichment for transcription factors (including other homeobox genes) and genes participating in several hormonal pathways, most significantly auxin, implicating KN1 at the crossroads of plant hormone signaling. The loss-of-function kn1 phenotype is reminiscent of auxin mutants and kn1 mis-expression in leaves correlates with increased auxin signaling. Our results demonstrate that KN1 plays a key role in orchestrating the upper levels of a hierarchical gene regulatory network that impacts plant meristem identity and function.

Organism:

Zea mays

Type:

Expression profiling by high throughput sequencing

Platform:

GPL15463

20 Samples

Download data: DIFF, XLS

(Submitter supplied) The functional genome of agronomically important plant species remains largely unexplored, yet presents a virtually untapped resource for targeted crop improvement. Functional elements and regulatory DNA revealed through chromatin accessibility maps can be harnessed for manipulating gene expression to subtle phenotypic outputs that enhance productivity in specific environments. Here, we present a genome-wide view of accessible chromatin and nucleosome occupancy at a very early stage in the development of both pollen- and grain-bearing inflorescences of the important cereal crop maize (Zea mays), using an assay for differential sensitivity of chromatin to micrococcal nuclease (MNase) digestion. more...

Organism:

Zea mays

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL17628

8 Samples

Download data: BED, BW, TXT, ZIP

(Submitter supplied) RNA-seq was performed to profile the transcriptomes of inflorescence primordia hand-dissected from the bristleless1-1 (bsl1-1)mutant in Setaria viridis compared to wild-type controls sampled under the same conditions. Bsl1 encodes a rate limiting enzyme in BR biosynthesis, which is the ortholog of D11 from rice. Mutants are characterized by a homeotic conversion of sterile bristles to spikelets in the inflorescence.

Organism:

Setaria viridis

Type:

Expression profiling by high throughput sequencing

Platform:

GPL23621

5 Samples

Download data: TXT

(Submitter supplied) S. reilianum triggered loss of organ and meristem identity, and loss of meristem determinacy in male and female inflorescences and flowers. Microarray analysis showed that these developmental changes were accompanied with transcriptional regulation of genes proposed to regulate floral organ and meristem identity, and meristem determinacy in maize.

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL4032

6 Samples

Download data: CEL, CHP

(Submitter supplied) Purpose: The goal of this study is to identify differentially expressed genes (DEGs) in immature ears between Barren inflorescence3 (Bif3) mutant and its wild-type siblings in maize. Methods: the 3-4 mm ear primordia of maize wild-type and Bif3 mutant were dissected from maize plant at the reproductive stage, and samples were snap freeze using liquid nitrogen. The total RNAs were prepared using RNeasy mini kit (Qiagen). more...

Organism:

Zea mays

Type:

Expression profiling by high throughput sequencing

Platform:

GPL25410

7 Samples

Download data: CSV, XLSX

(Submitter supplied) Directional transport of auxin is critical for inflorescence and floral development in flowering plants, but the role of auxin influx carriers (AUX1 proteins) has been largely overlooked. Taking advantage of available AUX1 mutants in Setaria viridis and maize, we uncover previously unreported aspects of plant development that are affected by auxin influx, including higher order branches in the inflorescence, stigma branch number, and glume (floral bract) development, and plant fertility. more...

Organism:

Setaria viridis

Type:

Expression profiling by high throughput sequencing

Platform:

GPL23621

22 Samples

Download data: TXT

(Submitter supplied) We have characterized a maize mutant, fuzzy tassel (fzt) with striking inflorescence and pleiotropic defects. fzt contains a mutation in the maize dicer-like1 homolog, a key enzyme required for microRNA (miRNA) biogenesis. By profiling the small RNA population in fzt mutants, we investigated the impact of fzt mutation on miRNA abundance in seedling and tassel primordia. We also investigated the transcript abundance of potential target genes of miRNA that were impacted in fzt mutant by transcriptome profiling. more...

Organism:

Zea mays

Type:

Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing

Platform:

GPL15463

26 Samples

Download data: TXT

(Submitter supplied) In the present study, we elucidate the molecular and hormonal role of the Six-rowed spike 2 (Vrs2) — a SHORT INTERNODES (SHI) transcriptional regulator during barley inflorescence and shoot development. Here we show that Vrs2 is specifically involved in floral organ patterning and phase duration by maintaining hormonal homeostasis and gradients during normal spike development; but similarly influenced plant stature traits. more...

Organism:

Hordeum vulgare

Type:

Expression profiling by array

Platform:

GPL22533

18 Samples

Download data: TXT

(Submitter supplied) Analysis of the transcriptome of the early developmental stages of the reproductive meristems of Oryza sativa ssp. Japonica cv Nipponbare. We compared the transcriptome obtained from osg1l2 single mutant to a wild type control

Organism:

Oryza sativa Japonica Group

Type:

Expression profiling by high throughput sequencing

Platform:

GPL27860

8 Samples

Download data: XLSX

(Submitter supplied) Maize LEAFBLADELESS1 (LBL1) and Arabidopsis SUPPRESSOR OF GENE SILENCING3 (SGS3) play orthologous roles in the biogenesis of 21 nucleotide trans-acting short-interfering RNAs (tasiRNAs). The phenotypes conditioned by mutation of lbl1 and SGS3 are, however, strikingly different, suggesting that the activities of these small RNA biogenesis components, or the tasiRNAs and their targets might not be entirely conserved. more...

Organism:

Zea mays

Type:

Non-coding RNA profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL13977 GPL15463

10 Samples

Download data: TXT, XLS

(Submitter supplied) As a key member of the grass-specific subclade of argonaute proteins, AGO18b protein has been proposed to bind 24-nt meiotic phasiRNAs based on their co-expression in tapetal and meiotic cells. Here we show that expression of in maize tassels is strictly induced by developmental stages. Interestingly, reduced expression of AGO18b in both Mutator-mediated (ago18b::mum) and RNAi mutants leads to an increase in plant height and tassel length, suggesting its non-meiotic function as a negative regulator of SAM/IM maintenance. more...

Organism:

Zea mays

Type:

Non-coding RNA profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL15463 GPL20156

18 Samples

Download data: XLSX

(Submitter supplied) Genome-wide expression signatures detect specific perturbations in developmental programs and contribute to functional resolution of key regulatory networks. In maize (Zea mays) inflorescences, mutations in the RAMOSA (RA) genes affect determinacy of axillary meristems and thus alter branching patterns, an important agronomic trait. In this work, we developed and tested a framework for analysis of tag-based, digital gene expression (DGE) profiles using Illumina’s high-throughput sequencing technology and the newly-assembled B73 maize reference genome. more...

Organism:

Zea mays

Type:

Expression profiling by high throughput sequencing

Platform:

GPL9141

7 Samples

Download data: GFF3, TXT

(Submitter supplied) BP and ER encode proteins that act synergistically to regulate Arabidopsis inflorescence architecture. To search for genes/proteins that influence the BP/ER signaling pathways, we conducted mutagenesis of the bp er double mutant and found that a mutation in FILAMENTOUS FLOWER (FIL) suppresses many of the morphological/developmental defects in bp er. Given that FIL encodes a Zn-finger containing transcription factor, microarray analysis was conducted on bp er vs. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

6 Samples

Download data: CEL

(Submitter supplied) RNA-seq was performed on 2-3mm WT and rel2-ref mutant maize tassels

Organism:

Zea mays

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20156

6 Samples

Download data: TXT

(Submitter supplied) Jatropha curcas L. is a potential biofuel plant. Application of exogenous cytokinin (6-benzyladenine, BA) on its inflorescence buds can significantly increase the number of female flowers, thereby improving seed yield. To investigate which genes and signal pathways are involved in the response to cytokinin in J. curcas inflorescence buds, we monitored transcriptional activity in inflorescences at 0, 3, 12, 24, and 48 h after BA treatment using a microarray. more...

Organism:

Jatropha curcas

Type:

Expression profiling by array

Platform:

GPL18092

15 Samples

Download data: TXT

(Submitter supplied) For characterizing the predominant transcriptional profiles associated with spike development progression, and to identify core regulatory candidate genes.

Organism:

Triticum turgidum subsp. durum

Type:

Expression profiling by high throughput sequencing

Platform:

GPL31178

20 Samples

Download data: TXT

(Submitter supplied) Here we report, that levels of the micronutrient boron are instrumental for meristem maintenance by integration into specific meristem maintenance pathways. We used RNA-seq analysis of the boron deficient maize mutant tassel-less1 to identify early molecular defects induced by boron deficiency in maize reproductive (tassel) meristems. RNA-seq results were independently verified through downstream in silico, double mutant, microscopy, proteomic, and molecular analyses.

Organism:

Zea mays

Type:

Expression profiling by high throughput sequencing

Platform:

GPL25410

6 Samples

Download data: XLSX