A5053746432- Plant Molecular Biology Research
- Plant Reproductive Biology
- Plant nutrient uptake and metabolism
- Photosynthetic Processes and Mechanisms
- Polysaccharides and Plant Cell Walls
- Light effects on plants
- Plant tissue culture and regeneration
- Plant Stress Responses and Tolerance
- Chromosomal and Genetic Variations
- Genetic Mapping and Diversity in Plants and Animals
- Plant Gene Expression Analysis
- Genetic diversity and population structure
- Plant responses to water stress
- Legume Nitrogen Fixing Symbiosis
- Tree Root and Stability Studies
- Plant Physiology and Cultivation Studies
- Ubiquitin and proteasome pathways
- Plant-Microbe Interactions and Immunity
- Seed Germination and Physiology
- Forest ecology and management
- Diverse Educational Innovations Studies
- Plant Parasitism and Resistance
- Genomics and Phylogenetic Studies
- Plant Genetic and Mutation Studies
- 14-3-3 protein interactions
University of Lausanne
2016-2025
Wageningen University & Research
2017
Czech Academy of Sciences, Institute of Experimental Botany
2011
Palacký University Olomouc
2011
SIB Swiss Institute of Bioinformatics
2011
Consejo Superior de Investigaciones Científicas
2009
Instituto de Biología Molecular y Celular de Plantas
2009
Universitat Politècnica de València
2009
McGill University
2002-2006
Yale University
2000-2002
Strigolactones (SLs) are phytohormones that play a central role in regulating shoot branching. SL perception and signaling involves the F-box protein MAX2 hydrolase DWARF14 (D14), proposed to act as an receptor. We used strong loss-of-function alleles of Arabidopsis thaliana D14 gene characterize function from early axillary bud development through lateral outgrowth demonstrated this control flowering time. Our data show distribution vivo overlaps with reported for at both tissue subcellular...
Plants actively perceive and respond to perturbations in their cell walls which arise during growth, biotic abiotic stresses. However, few components involved plant wall integrity sensing have been described date. Using a reverse-genetic approach, we identified the Arabidopsis thaliana leucine-rich repeat receptor kinase MIK2 as an important regulator of damage responses triggered upon cellulose biosynthesis inhibition. Indeed, loss-of-function mik2 alleles are strongly affected immune...
Transcription factors of the auxin response factor (ARF) family have been implicated in auxin-dependent gene regulation, but little is known about functions individual ARFs plants. Here, interaction assays, expression studies and combinations multiple loss- gain-of-function mutants were used to assess roles two ARFs, NONPHOTOTROPIC HYPOCOTYL 4 (NPH4/ARF7) MONOPTEROS (MP/ARF5), Arabidopsis development. Both MP NPH4 interact strongly selectively with themselves each other, are expressed vastly...
Summary The role of the Arabidopsis transcription factor LONG HYPOCOTYL 5 (HY5) in promoting photomorphogenic development has been extensively characterized. Although current model for HY5 action largely explains its this process, it does not adequately address root phenotype observed hy5 mutants. In our search common mechanisms underlying all traits, we found that they are partly result an altered balance signaling through plant hormones auxin and cytokinin. mutants resistant to cytokinin...
Mutant analysis has been tremendously successful in deciphering the genetics of plant development. However, less is known about molecular basis morphological variation within species, which caused by naturally occurring alleles. In this study, we succeeded isolating a novel regulator root growth exploiting natural genetic model Arabidopsis. Quantitative trait locus cross between isogenized accessions revealed that single responsible for approximately 80% variance observed difference length....
Abstract Secondary growth of the vasculature results in thickening plant structures and continuously produces xylem tissue, major biological carbon sink. Little is known about developmental control this quantitative trait, which displays two distinct phases Arabidopsis thaliana hypocotyls. The later phase accelerated expansion resembles secondary trees triggered upon flowering by an unknown, shoot-derived signal. We found that flowering-dependent hypocotyl a general feature herbaceous plants...
The Arabidopsis transcription factor HY5 controls light-induced gene expression downstream of photoreceptors and plays an important role in the switch seedling shoots from dark-adapted to light-adapted development. In addition, has been implicated plant hormone signaling, accounting for accelerated root system growth phenotype hy5 mutants. Mutants close homolog HYH resemble wild-type, despite largely similar patterns levels HYH, functional equivalence respective proteins. Moreover, relative...
Peptide signaling presumably occupies a central role in plant development, yet only few concrete examples of receptor-ligand pairs that act the context specific differentiation processes have been described. Here we report second-site null mutations Arabidopsis leucine-rich repeat receptor-like kinase gene barely any meristem 3 ( BAM3 ) perfectly suppress postembryonic root growth defect and associated perturbed protophloem development brevis radix brx mutant. The roots bam3 mutants...
Significance The emergence of vascular tissues played a central role in the plant conquest land. Both xylem and phloem are essential for development flowering plants, yet little is known about molecular genetic control specification differentiation. Here we show that delicate quantitative interplay between two opposing signaling pathways determines cellular commitment to protophloem sieve element fate root meristems model Arabidopsis thaliana . Our data suggest recently described...
A central question in developmental biology is how multicellular organisms coordinate cell division and differentiation to determine organ size. In Arabidopsis roots, this balance controlled by cytokinin-induced expression of SHORT HYPOCOTYL 2 ( SHY2 ) the so-called transition zone meristem, where negatively regulates auxin response factors (ARFs) protein–protein interaction. The resulting down-regulation PIN-FORMED PIN efflux carriers considered key event promoting meristematic cells. Here...
Protophloem is a specialized vascular tissue in growing plant organs, such as root meristems. In Arabidopsis mutants with impaired primary protophloem differentiation, brevis radix (brx) and octopus (ops), meristematic activity consequently overall growth are strongly reduced. Second site mutation the protophloem-specific presumed phosphoinositide 5-phosphatase COTYLEDON VASCULAR PATTERN 2 (CVP2), but not its homolog CVP2-LIKE 1 (CVL1), partially rescues brx defects. Consistent this finding,...
ABSTRACT Brassinosteroids (BRs) trigger an intracellular signaling cascade through its receptors BR INSENSITIVE 1 (BRI1), BRI1-LIKE (BRL1) and BRL3. Recent studies suggest that BR-independent inputs related to vascular differentiation, for instance root protophloem development, modulate downstream components. Here, we report sieve element differentiation is indeed impaired in bri1 brl1 brl3 mutants, although this effect might not be mediated by canonical We also found their small meristem...
Abstract Arabidopsis root development is orchestrated by signaling pathways that consist of different CLAVATA 3/ EMBRYO SURROUNDING REGION ( CLE ) peptide ligands and their cognate CLV BARELY ANY MERISTEM BAM receptors. How where peptides trigger specific morphological or physiological changes in the poorly understood. Here, we report receptor‐like protein 2 2) pseudokinase CORYNE CRN are necessary to fully sense root‐active peptides. We uncover 3 as 45 receptor biochemically map its binding...