A5078599134- Light effects on plants
- Plant Molecular Biology Research
- Photosynthetic Processes and Mechanisms
- Plant Parasitism and Resistance
- Plant and Biological Electrophysiology Studies
- Plant Gene Expression Analysis
- Greenhouse Technology and Climate Control
- Plant tissue culture and regeneration
- Plant nutrient uptake and metabolism
RIKEN Center for Sustainable Resource Science
2023-2024
University of Lausanne
2018-2022
University of Zurich
2021
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...
Significance In dense communities, plants compete for light and sense potentially threatening neighbors prior to actual shading. response neighbor proximity cues, shade-intolerant selectively elongate stem-like structures, thereby enhancing access unfiltered sunlight. Although key steps in plant sensing signaling have been identified, we know little about the metabolic adaptations underlying enhanced stem growth. Here, show that, following detection of seedlings allocate more carbon fixed...
Abstract Leaves of shade-avoiding plants such as Arabidopsis (Arabidopsis thaliana) change their growth pattern and position in response to low red far-red ratios (LRFRs) encountered dense plant communities. Under LRFR, transcription factors the phytochrome-interacting factor (PIF) family are derepressed. PIFs induce auxin production, which is required for promoting leaf hyponasty, thereby favoring access unfiltered sunlight. Abscisic acid (ABA) has also been implicated control with gene...
Abstract Plant growth ultimately depends on fixed carbon, thus the available light for photosynthesis. Due to canopy absorption properties, vegetative shade combines low blue (LB) and a red far-red ratio (LRFR). In shade-avoiding plants, these two conditions independently trigger adaptations enhance access. However, how conditions, differing in quality quantity, similarly promote hypocotyl remains unknown. Using RNA sequencing we show that features of different transcriptional reprogramming....
Shaded plants challenged with herbivores or pathogens prioritize growth over defense. However, most experiments have focused on the effect of shading light cues defense responses. To investigate potential interaction between shade-avoidance and wounding-induced Jasmonate (JA)-mediated signaling leaf movement, we used repetitive mechanical wounding blades to mimic herbivore attacks. Phenotyping combined treatments Arabidopsis thaliana rosettes revealed that shade strongly inhibits wound...
Abstract Injured plant somatic tissues regenerate themselves by establishing shoot or root meristems. In Arabidopsis (Arabidopsis thaliana), a two-step culture system ensures regeneration first promoting the acquisition of pluripotency and subsequently specifying fate new Although previous studies have reported importance phytohormones auxin cytokinin in determining meristems, whether how environmental factors influence this process remains elusive. study, we investigated impact light...
Abstract Leaves of shade avoiding plants like Arabidopsis thaliana change their growth pattern and position in response to a low red far-red ratio (LRFR) that is encountered dense plant communities. In LRFR, transcription factors the phytochrome interacting family (PIFs) are de-repressed. PIFs induce auxin production, which required promote leaf hyponasty thereby favoring access unfiltered sunlight. Abscisic acid (ABA) has also been implicated control hyponasty. addition, gene expression...
SUMMARY Plant growth ultimately depends on fixed carbon, thus the available light for photosynthesis. Due to canopy absorption properties, vegetative shade combines reduced and a low red far-red ratio (LRFR). In shade-avoiding plants, these two conditions independently promote adaptations enhance access. However, how conditions, differing in photosynthetically-available light, similarly remains unknown. Here, we show that Arabidopsis seedlings adjust metabolism according supply resources...
Abstract Shaded plants challenged with herbivores or pathogens prioritize growth over defense. However, most experiments have focused on the effect of shading light cues defense responses. To investigate potential interaction between shade-avoidance and wounding-induced Jasmonate (JA)-mediated signaling leaf movement, we used repetitive mechanical wounding blades to mimic herbivore attacks. Phenotyping combined treatments Arabidopsis thaliana rosettes revealed that shade strongly inhibits...