Arabidopsis thaliana
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA313221 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Leaves are flat determinate organs derived from indeterminate shoot apical meristems. The presence of a specific leaf meristem is debated, as anatomical features typical of meristems are not present in leaves. Here we demonstrate that multiple NGATHA (NGA) and CINCINNATA-class-TCP (CIN-TCP) transcription factors act redundantly to suppress activity of a leaf margin meristem in Arabidopsis thaliana, and that their absence confers persistent marginal growth of leaves, cotyledons and floral organs. The marginal meristem is activated by the juxtaposition of adaxial and abaxial domains and maintained by WOX homeobox transcription factors, but other margin elaboration genes are dispensable for its maintenance. This genetic framework parallels the morphogenetic program of shoot apical meristems and may represent a relic from an ancestral shoot system from which seed plant leaves evolved.
2016-10-03 | GSE78693 | GEO
Project description:Plants grow continuously and undergo numerous changes in their vegetative morphology and physiology during their life span. The molecular basis of these changes is largely unknown. To provide a more comprehensive picture of shoot development in Arabidopsis, microarray analysis was used to profile the mRNA content of shoot apices of different ages, as well as leaf primordia and fully-expanded leaves from 6 different positions on the shoot, in early-flowering and late-flowering genotypes. This extensive dataset provides a new and unexpectedly complex picture of shoot development in Arabidopsis. At any given time, the pattern of gene expression is different in every leaf on the shoot, and reflects the activity at least 6 developmental programs. Three of these are specific to individual leaves (leaf maturation, leaf aging, leaf senescence), two occur at the level of the shoot apex (vegetative phase change, floral induction), and one involves the entire shoot (shoot aging). Our results demonstrate that vegetative development is a much more dynamic process that previously imagined, and provide new insights into the underlying mechanism of this process.
2019-11-30 | GSE122691 | GEO
Project description:Microarrays were used to evaluate the effect of sucrose on gene expression in guard cells. Strips of Arabidopsis leaves were incubated with sucrose or mannitol or no sugars, then the leaves were freeze dried and guard cells were dissected from the leaf strips and analyzed.
2012-11-26 | GSE37408 | GEO
Project description:gnp07_regeneome_cuc2 - cuc2 - CUC2 is expressed in meristem. It permits to create organs boundaries. It is also expressed in leave margins. Is there a mecanism meristem like in leave margins? - To compare wt and cuc2 leaf margins. And compare teeth and hollow inside the arabidopsis leaf margin.
2012-06-01 | GSE30260 | GEO
Project description:These data represent two experiments, one on wounding leaves and one based on injecting current into leaves. We first analyzed transcript levels in leaf 13 when leaf 8 was wounded. Transcripts levels in leaf 8 were then analyzed after current injection. Sample handling and normalisations were identical between experiments.
2013-08-21 | GSE41779 | GEO
Project description:Dynamic cell identities underlie flexible developmental programs. The stomatal lineages in the Arabidopsis leaf epidermis feature asynchronous and indeterminate divisions that can be modulated by environmental cues. The products of these lineages, stomatal guard cells and pavement cells, regulate plant-atmosphere exchanges, and the epidermis as a whole influences overall leaf growth. How flexibility is encoded in development of the stomatal lineage, and how cell fates are coordinated in the leaf are open questions. Here, we offer single-cell transcriptomes to uncover models of cell differentiation within Arabidopsis leaf tissue.
2021-04-05 | GSE167135 | GEO
Project description:Plants are subjected to perpetual fluctuations of light intensity and spectral composition in their natural growth environment, particularly due to movement of clouds and upper canopy leaves. Sudden exposure to intense light is accompanied by absorption of excess light energy, which results in an overload of photosynthetic electron transport chain and generation of reactive oxygen species in and around thylakoid membranes. To cope with this photooxidative stress and to prevent chronic photoinhibition under dynamically changing light intensities, plants have evolved various short- and long-term photoprotective mechanisms. We used quantitative mass spectrometry to investigate long-term acclimation of Arabidopsis thaliana leaf proteome to fluctuating light (FL) which induces photooxidative stress. After three days of FL exposure the proteomes of young and mature leaves were analyzed separately in the morning and at the end of day to examine possible interaction between FL acclimation and leaf development or time of day.
2020-01-30 | PXD015330 | Pride
Project description:Arabidopsis thaliana leaf parallel analysis of RNA ends
2018-06-25 | GSE113958 | GEO
Project description:Genome-wide transcriptome analysis of Arabidopsis thaliana was performed to understand the role of auxin in the response of leaf growth to osmotic stress. We studied transcriptional changes in proliferating leaves of the seedlings grown in vitro on control medium, medium supplemented with 25mM mannitol, 0.1μM NAA and 0.1μM NAA + 25mM mannitol.
2021-05-09 | GSE60870 | GEO
Project description:A 10 ul drop of B. cinerea spores prepared in half-strength commercial grape juice was placed in the middle of detached Arabidopsis leaves. A cock-borer of 6 mm diameter was used to harvest leaf discs starting from the edge of the lesion (close, 0-6 mm) and the edge of the first disc (away, 6-12 mm) 48 hr after inoculation. Control plants were inoculated with a 10 ul drop of half-strength commercial grape juice with no spores.
2011-03-01 | GSE24444 | GEO