A5063581755- Light effects on plants
- Plant Molecular Biology Research
- Photosynthetic Processes and Mechanisms
- Greenhouse Technology and Climate Control
- Fungal and yeast genetics research
- Plant Reproductive Biology
- Microtubule and mitosis dynamics
- Plant nutrient uptake and metabolism
- Circadian rhythm and melatonin
- Chromosomal and Genetic Variations
- Photoreceptor and optogenetics research
- Polysaccharides and Plant Cell Walls
- Marine and coastal plant biology
- Plant and Biological Electrophysiology Studies
- Turfgrass Adaptation and Management
- Plant Parasitism and Resistance
- Plant Disease Resistance and Genetics
- Biofuel production and bioconversion
- Plant Physiology and Cultivation Studies
- Tree Root and Stability Studies
- Seedling growth and survival studies
- Microbial Metabolic Engineering and Bioproduction
- Plant and animal studies
- Evolution and Genetic Dynamics
- Plant tissue culture and regeneration
University of Lausanne
2016-2025
University of Geneva
1994-2013
Consejo Superior de Investigaciones Científicas
2011
Universitat Politècnica de València
2011
Instituto de Biología Molecular y Celular de Plantas
2011
Indiana University Bloomington
2010
Agricultural Plant Physiology and Ecology Research Institute
2007-2008
Consejo Nacional de Investigaciones Científicas y Técnicas
2008
University of Buenos Aires
2007-2008
Salk Institute for Biological Studies
1996-2001
Although auxin is known to regulate many processes in plant development and has been studied for over a century, the mechanisms whereby plants produce it have remained elusive. Here we report characterization of dominant Arabidopsis mutant, yucca, which contains elevated levels free auxin. YUCCA encodes flavin monooxygenase-like enzyme belongs family that includes at least nine other homologous genes, subset appears redundant functions. Results from tryptophan analog feeding experiments...
Activation tagging using T-DNA vectors that contain multimerized transcriptional enhancers from the cauliflower mosaic virus (CaMV) 35S gene has been applied to Arabidopsis plants. New activation-tagging confer resistance antibiotic kanamycin or herbicide glufosinate have used generate several tens of thousands transformed From these, over 30 dominant mutants with various phenotypes isolated. Analysis a subset shown overexpressed genes are almost always found immediately adjacent inserted...
Summary Plant growth and development are particularly sensitive to changes in the light environment especially vegetational shading. The shade‐avoidance response is mainly controlled by phytochrome photoreceptors. In Arabidopsis, recent studies have identified several related bHLH class transcription factors (PIF, for phytochrome‐interacting factors) as important components signaling. addition a domain, most of PIFs contain an active binding (APB) domain that mediates their interaction with...
Summary Plant growth is strongly influenced by the presence of neighbors that compete for light resources. In response to vegetational shading shade‐intolerant plants such as Arabidopsis display a suite developmental responses known shade‐avoidance syndrome (SAS). The phytochrome B (phyB) photoreceptor major sensor mediate this adaptive response. Control SAS occurs in part with phyB, which controls protein abundance phytochrome‐interacting factors 4 and 5 (PIF4 PIF5) directly. also requires...
Plants constantly monitor their light environment in order to grow and develop optimally, part through use of the phytochromes, which sense red/far-red light. A phytochrome binding protein, PKS1 (phytochrome kinase substrate 1), was identified that is a for light-regulated activity vitro. In vivo experiments suggest phosphorylated phytochrome-dependent manner negatively regulates signaling. The data phytochromes signal by serine-threonine phosphorylation.
Summary In response to elevated ambient temperature Arabidopsis thaliana seedlings display a thermomorphogenic that includes elongation of hypocotyls and petioles. Phytochrome B cryptochrome 1 are two photoreceptors also playing role in thermomorphogenesis. Downstream both environmental sensors PHYTOCHROME INTERACTING FACTOR 4 (PIF4) is essential trigger this at least part through the production growth promoting hormone auxin. Using genetic approach, we identified 7 (PIF7) as novel player...
Elaborate mechanisms have evolved for the translocation of nucleus-encoded proteins across plastid envelope membrane. Although putative components import apparatus been identified biochemically, their role in remains to be proven vivo. An Arabidopsis mutant lacking a new component machinery [translocon at outer membrane chloroplasts (Toc33), 33-kilodalton protein] has isolated. The functional similarity Toc33 another translocon (Toc34) implies that multiple different complexes are present...
Little is known about the mechanisms that establish position of division plane in eukaryotic cells. Wild-type fission yeast cells divide by forming a septum middle cell at end mitosis. Dmf1 mutants complete mitosis and initiate formation, but septa form are positioned random locations angles cell, rather than middle. We have cloned dmf1 gene as suppressor cdc7-24 mutant. The mutant allelic with mid1. encodes novel protein containing putative nuclear localization signal, carboxy-terminal PH...