A5040545096- Plant Molecular Biology Research
- Plant Reproductive Biology
- Plant nutrient uptake and metabolism
- Polysaccharides and Plant Cell Walls
- Fern and Epiphyte Biology
- Light effects on plants
Wageningen University & Research
2024
John Innes Centre
2023-2024
University of Lausanne
2019-2022
Abstract O -linked β- N -acetylglucosamine ( -GlcNAc) and -fucose are two sugar-based post-translational modifications whose mechanistic role in plant signalling transcriptional regulation is still largely unknown. Here we investigated how -glycosyltransferase enzymes of Arabidopsis thaliana , SPINDLY (SPY) SECRET AGENT (SEC), promote the activity basic helix–loop–helix transcription factor SPATULA (SPT) during morphogenesis female reproductive organ apex, style. SPY SEC modify...
Abstract Angiosperms have evolved the phloem for long-distance transport of metabolites. The complex process development involves genes that only occur in vascular plant lineages. For example, Arabidopsis thaliana, BREVIS RADIX (BRX) gene is required continuous root protophloem differentiation, together with PROTEIN KINASE ASSOCIATED WITH BRX (PAX). and its BRX-LIKE (BRXL) homologs are composed four highly conserved domains including signature tandem separated by variable spacers....
SUMMARY The bilateral‐to‐radial symmetry transition occurring during the development of Arabidopsis thaliana female reproductive organ (gynoecium) is a crucial biological process linked to plant fertilization and seed production. Despite its significance, cellular mechanisms governing establishment breaking radial at gynoecium apex (style) remain unknown. To fill this gap, we employed quantitative confocal imaging coupled with MorphoGraphX analysis, in vivo vitro transcriptional experiments,...
ABSTRACT The establishment of organ symmetry during multicellular development is a fundamental process shared by most living organisms. Here, we investigated how two O -glycosyltransferases Arabidopsis thaliana , SPINDLY (SPY) and SECRET AGENT (SEC) synergistically promote rare bilateral-to-radial transition patterning the plant reproductive organ, gynoecium. SPY SEC modify N-terminal residues bHLH transcription factor SPATULA (SPT) in vivo vitro attaching -fucose...
The biological mechanisms responsible for correct shape acquisition at the apex of female reproductive organ, gynoecium, remain poorly understood, despite its fundamental importance successful plant reproduction and seed production. This process involves a rare bilateral-to-radial symmetry transition in Arabidopsis thaliana, orchestrated part by transcription factor SPATULA (SPT). Here, we show that SPT negatively controls cell proliferation, promoted hormone cytokinin, to enhance robustness...
Abstract Seedling vigor is a key agronomic trait that determines juvenile plant performance. Angiosperm seeds develop inside fruits and are connected to the mother through vascular tissues. Their formation requires plant-specific genes, such as BREVIS RADIX (BRX) in Arabidopsis thaliana roots. BRX family proteins found throughout angiosperms but also occur non-vascular bryophytes non-seed lycophytes. They consist of four conserved domains, including tandem “BRX-domains”. We bryophyte or...
Seedling vigor is a key agronomic trait that determines juvenile plant performance. Angiosperm seeds develop inside fruits and are connected to the mother through vascular tissues. Their formation requires plant-specific genes, such as BREVIS RADIX (BRX) in Arabidopsis thaliana roots. BRX family proteins found throughout euphyllophytes but also occur non-vascular bryophytes non-seed lycophytes. They consist of four conserved domains, including tandem domains. We bryophyte or lycophyte...