Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Gibberellin and the microRNA156/SlSBP module synergistically regulate tomato floral meristem activity and fruit patterning

ABSTRACT: Most developmental processes associated with fruit patterning take place at the floral meristem (FM). Age-regulated microRNA156 (miR156) and gibberellins (GA) integrate to control flowering time, but it is unclear how GA and miR156 interplay during fruit patterning. Here, we used genetic, molecular, and imaging tools to demonstrate that GA and age synergistically control tomato reproductive development. We found that low levels of miR156-targeted SQUAMOSA PROMOTER BINDING PROTEIN–LIKE (SPL/SBP) transcripts or high GA responses/levels led to enlarged FMs, defects in FM determinacy, and fruits with increased locule number. Conversely, low GA responses reduced locule number and indeterminacy, and the expression of a miR156-resistant form of SlSBP15 (rSBP15) reduces FM size by decreasing cell size and cell number. Importantly, we discovered that GA levels/responses may be partially responsible for the fruit defects observed in 156OE and rSBP15 plants. GA and miR156-targeted SlSBPs regulate classical genes associated with floral determinacy, such as CRABS CLAWa (SlCRCa), and GA and SlSBPs act synergistically with tomato CLAVATA3 (SlCLV3) to control early flower and fruit development. Our findings indicate that gibberellins and age-dependent miR156-targeted SlSBPs co-operate to regulate FM activity and locule formation, thereby offering a novel mechanism of controlling fruit patterning.

ORGANISM(S): Solanum lycopersicum

PROVIDER: GSE223674 | GEO | 2023/07/25

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

Integration of tomato reproductive developmental landmarks and expression profiles, and the effect of SUN on fruit shape

Project description:Universally accepted landmark stages are necessary to highlight key events in tomato reproductive development. In this study, we provide a description of floral and fruit development in a red-fruited closely related wild relative of tomato, Solanum pimpinellifolium accession LA1589. We use established and propose new landmarks as the framework for the characterization of the tomato fruit shape gene SUN in fruit development. SUN controls fruit shape predominantly after fertilization and its effect reaches a maximum at 8 days post anthesis coinciding with fruit landmark 4 representing the globular embryo stage of seed development. We also analyzed gene expression profiles of floral buds 10 days before anthesis (floral landmark 7), anthesis-stage flowers (floral landmark 10 and fruit landmark 1), and 5 days post anthesis fruit (fruit landmark 3). The expression profiles of the NILs that differ at sun showed that 34 genes were differentially expressed and most of them at a less than 2-fold difference. However, many genes were differentially expressed between the developmental times points, including many genes involved in phytohormone biosynthesis or signaling as well as organ identity and patterning of tomato fruit.

2009-05-21 | GSE15453 | GEO

AUXIN RESPONSE FACTOR3 Integrates the Functions of AGAMOUS and Auxin to Repress Cytokinin Biosynthesis and Signaling in Floral Meristem Determinacy

Project description:Successful floral meristem (FM) determinacy is critical for the subsequent reproductive development and life cycle. Although phytohormones cytokinin and auxin interact to coordinately regulate many aspects of plant development, whether, if so how, cytokinin and auxin function in FM determinacy remain unclear. Here we show that the homeostasis of cytokinin is critical for the FM determinacy. Auxin promotes the expression of AUXIN RESPONSE FACTOR3 (ARF3) to repress cytokinin activity in FM determinacy. We found that ARF3 represses the expression of the ISOPENTENYLTRANSFERASE (IPT) family genes directly and the LONELY GUY (LOG) family genes indirectly, whose products are enzymes required for cytokinin biosynthesis. Furthermore, ARF3 directly inhibits the expression of ARABIDOPSIS HISTIDINE KINASE4 (AHK4), one of cytokinin receptor genes, to depress cytokinin activity. Genome-Wide Transcriptional Profiling reveals multiple functions of ARF3 in flower development. Consequently, ARF3 controls cell division by regulating cell cycle genes expression through cytokinin. Eventually, we show that AGAMOUS (AG) dynamically regulates the expression of ARF3 and IPTs resulting in coordinated regulation of FM maintenance and termination through cell division. Therefore, our findings reveal the molecular linkage between phytohormones auxin/cytokinin and AG in FM determinacy and shed light on the mechanisms of FM maintenance and termination.

2018-08-24 | GSE103054 | GEO

Integration of tomato reproductive developmental landmarks and expression profiles, and the effect of SUN on fruit shape

2010-05-18 | E-GEOD-15453 | biostudies-arrayexpress

Flowering time and inflorescence architecture are regulated by FRUITFULL-like genes in tomato

Project description:Null mutations of tomato FRUITFULL-like genes FUL1, FUL2, MBP10, MBP20 caused delayed flowering and branched inflorescence, so we sequenced mRNA from vegetative meristems (VM), transition meristems (TM), floral meristems (FM), and FM of the first sympodial shoot of tomato mutant ful1/ful2/mbp10/mbp20 (slful) as well as the wild type Moneyberg (WT) to see genome-wide expression changes affected by the mutations.

2021-12-22 | GSE154419 | GEO

Juvenility and Vegetative Phase Transition in Tropical/Subtropical Tree Crops.

Project description:In plants, juvenile to adult phase transition is regulated by the sequential activity of two microRNAs: miR156 and miR172. A decline in miR156 and increase in miR172 abundance is associated with phase transition. There is very limited information on phase transition in economically important horticultural tree crops, which have a significantly long vegetative phase affecting fruit bearing. Here we profiled various molecular cues known to be involved in phase transition and flowering, including the microRNAs miR156 and miR172, in three horticultural tree crops avocado (Persea americana), mango (Mangifera indica) and macadamia (Macadamia integrifolia). We observed that miR156 expression decreases as these trees age and can potentially be used as a juvenility marker. Consistent with findings in annual plants, we also observed conserved regulation of the miR156-SPL3/4/5 regulatory module in these genetically distant tree crops, suggesting that this pathway may play a highly conserved role in vegetative identity. Meanwhile, the abundance of miR172 and its target AP2-like genes, as well as the accumulation level of SPL9 transcripts, were not related with plant age in these crops except in avocado where miR172 expression increased steadily. Finally, we demonstrate that various floral genes, including AP1 and SOC1 were upregulated in the reproductive phase and can be used as potential markers for the reproductive phase transition. Overall, this study provides an insight into the molecular associations of juvenility and phase transition in horticultural trees where crop breeding and improvement is encumbered by long juvenile phases.

2019-05-01 | GSE130476 | GEO

Molecular analysis of a tomato OGDH antisense line

Project description:Transgenic tomato (Solanum lycopersicum) plants expressing a fragment of the SlSIOGDH gene encoding subunit E1 of the 2-oxoglutarate dehydrogenase protein complex in the antisense orientation and exhibiting considerable reductions in the activity of this enzyme exhibit a considerably reduced rate of respiration. They were, however, characterised by largely unaltered photosynthetic rates and fruit yield but a restricted leaf, stem and root growth rate. The lines displayed markedly altered metabolic profiles including changes in tricarboxylic acid cycle intermediates and in the majority of the amino acids without alterations in pyridine nucleotide content. Moreover, they displayed a generally accelerated development exhibiting early flowering, accelerated fruit ripening and a markedly earlier onset of leaf senescence. In addition, transcript and selective hormone profiling of gibberellins and ABA revealed changes only in the former coupled to changes in transcripts encoding enzymes of gibberellins biosynthesis. The data obtained are discussed in the context of the importance of this enzyme in both photosynthetic and respiratory metabolism as well as in programs of plant development connected to carbon nitrogen interactions. Three biological replicates per genotype were analysed. Genotypes analyzed were tomato var. M82 wild type plants grown under green house conditions with one 2-oxo-glutarate dehydrogenase antisense line grown under the same conditions.

2012-09-01 | E-GEOD-35618 | biostudies-arrayexpress

Sporisorium reilianum Infection Changes Inflorescence and Branching Architectures of Maize

Project description: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.

2011-09-01 | GSE29747 | GEO

The grain yield modulator miR156 regulates seed dormancy through the gibberellin pathway in rice

Project description:The widespread agricultural problem of pre-harvest sprouting (PHS) could potentially be overcome by improving seed dormancy. Here, we report that miR156, an important grain yield regulator, also controls seed dormancy in rice. We found that mutations in one MIR156 subfamily enhance seed dormancy and suppress PHS with negligible effects on shoot architecture and grain size, whereas mutations in another MIR156 subfamily modify shoot architecture and increase grain size but have minimal effects on seed dormancy. Mechanistically, mir156 mutations enhance seed dormancy by suppressing the gibberellin (GA) pathway through de-represssion of the miR156 target gene Ideal Plant Architecture 1 (IPA1), which directly regulates multiple genes in the GA pathway. These results provide an effective method to suppress PHS without compromising productivity, and will facilitate breeding elite crop varieties with ideal plant architectures.

2019-09-03 | GSE131243 | GEO

sequential DNA affinity purification sequencing (seq-DAP-seq) data of MADS SEP3-AG tetramerization mutants.

Project description:The MADS genes encode transcription factors (TF) that act as master regulators of plant reproduction and flower development. The SEPALLATA (SEP) MADS subfamily is not only absolutely required for the development of floral organs, but also plays roles in inflorescence architecture and determinacy of the floral meristem. The SEPs act as organizers of MADS complexes and are able to form both heterodimers and heterotetramers in vitro. To date, the MADS TF complexes characterized in angiosperm floral organ development contain at least one SEP TF. Whether DNA-binding by SEP-containing dimeric MADS complexes are sufficient for launching floral organ identity programs, however, is not clear as only defects in floral meristem determinacy were observed in tetramerization impaired SEP mutants. Here we used a combination of genome-wide binding studies, high resolution structural studies of the SEP3-AGAMOUS tetramerisation domain, structure-based mutagenesis and complementation experiments in sep1 sep2 sep3 and sep1 sep2 sep3 ag-4 plants transformed with versions of SEP3 encoding tetramerization mutants. We demonstrate that while SEP3 heterodimers are able to bind DNA both in vitro and in vivo and recognize the majority of SEP3 wild type binding sites genome-wide, tetramerisation is not only required for floral meristem determinacy, but also absolutely required for floral organ identity in the second, third and fourth whorls.

2024-04-30 | GSE227012 | GEO

Molecular analysis of a tomato OGDH antisense line

2012-09-01 | GSE35618 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data