Marion Louveaux

Marion Louveaux
Institut Pasteur

PhD

About

29
Publications
5,764
Reads
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680
Citations
Citations since 2016
23 Research Items
612 Citations
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2016201720182019202020212022050100150
Additional affiliations
November 2021 - present
Opendatasoft
Position
  • Account Manager
December 2019 - November 2021
Institut Pasteur
Position
  • Engineer
June 2016 - August 2016
Wageningen University & Research
Position
  • PostDoc Position
Description
  • 3 month project on the characterization of cortical microtubules in the embryo of Arabidopsis thaliana
Education
October 2012 - September 2015
Ecole normale supérieure de Lyon
Field of study
  • Life Sciences: Biophysics, Developmental Biology, Plant Sciences

Publications

Publications (29)
Chapter
Full-text available
Published bioimage analysis workflows are designed for a specific biology use case and often hidden in the material and methods section of a biology paper. The art of the bioimage analyst is to find these workflows, deconstruct them and tune them to a new use case by replacing or modifying components of the workflow and/or linking them to other wor...
Preprint
Full-text available
Meristems are stem cells niches that support the formation of all plant organs and are either set during embryogenesis and maintained throughout the plant life or specified de novo, post-embryonically. The embryo-derived root apical meristem is organized around a group of infrequently dividing cells, the quiescent centre, that maintains the stem ce...
Article
Full-text available
NEUBIAS, the European Network of Bioimage Analysts, was created in 2016 with the goal of improving the communication and the knowledge transfer among the various stakeholders involved in the acquisition, processing and analysis of biological image data, and to promote the establishment and recognition of the profession of Bioimage Analyst. One of t...
Article
Full-text available
Lateral root formation determines to a large extent the ability of plants to forage their environment and thus their growth. In Arabidopsis thaliana and other angiosperms, lateral root initiation requires radial cell expansion and several rounds of anticlinal cell divisions that give rise to a central core of small cells, which express different ma...
Preprint
Full-text available
Lateral root formation determines to a large extent the ability of plants to forage their environment and thus their growth. In Arabidopsis thaliana and other angiosperms, lateral root initiation requires radial cell expansion and several rounds of anticlinal cell divisions that give rise to a central core of small pericycle cells, which express di...
Preprint
Full-text available
The ultimate goal of HIV-1 is integration into the host chromatin to optimize the release of high levels of viral progeny and discretely coexist with the host. To uncover the HIV-1 DNA fate in the nuclear landscape we directly tracked the viral DNA (vDNA) and the viral RNA (vRNA) by coupling HIV-1 ANCHOR technology with RNA FISH or MCP-MS2 RNA-tagg...
Article
Full-text available
Quantitative analysis of plant and animal morphogenesis requires accurate segmentation of individual cells in volumetric images of growing organs. In the last years, deep learning has provided robust automated algorithms that approach human performance, with applications to bio-image analysis now starting to emerge. Here, we present PlantSeg, a pip...
Article
Full-text available
Quantitative analysis of plant and animal morphogenesis requires accurate segmentation of individual cells in volumetric images of growing organs. In the last years, deep learning has provided robust automated algorithms that approach human performance, with applications to bio-image analysis now starting to emerge. Here, we present PlantSeg, a pip...
Article
Full-text available
Quantitative analysis of plant and animal morphogenesis requires accurate segmentation of individual cells in volumetric images of growing organs. In the last years, deep learning has provided robust automated algorithms that approach human performance, with applications to bio-image analysis now starting to emerge. Here, we present PlantSeg, a pip...
Article
We introduce the NEUBIAS Gateway, a new platform for publishing materials related to bioimage analysis, an interdisciplinary field bridging computer science and life sciences. This emerging field has been lacking a central place to share the efforts of the growing group of scientists addressing biological questions using image data. The Gateway wel...
Preprint
Full-text available
Quantitative analysis of plant and animal morphogenesis requires accurate segmentation of individual cells in volumetric images of growing organs. In the last years, deep learning has provided robust automated algorithms that approach human performance, with applications to bio image analysis now starting to emerge. Here, we present PlantSeg, a pip...
Article
Full-text available
The throughput of electron microscopes has increased significantly in recent years, enabling detailed analysis of cell morphology and ultrastructure in fairly large tissue volumes. Analysis of neural circuits at single-synapse resolution remains the flagship target of this technique, but applications to cell and developmental biology are also start...
Article
Full-text available
How plant cells re-establish differential growth to initiate organs is poorly understood. Morphogenesis of lateral roots relies on the asymmetric cell division of initially symmetric founder cells. This division is preceded by the tightly controlled asymmetric radial expansion of these cells. The cellular mechanisms that license and ensure the coor...
Article
Full-text available
Background Many methods have been developed to quantify cell shape in 2D in tissues. For instance, the analysis of epithelial cells in Drosophila embryogenesis or jigsaw puzzle-shaped pavement cells in plant epidermis has led to the development of numerous quantification methods that are applied to 2D images. However, proper extraction of 2D cell c...
Preprint
Full-text available
How plant cells re-establish differential growth to initiate organs is poorly understood. Morphogenesis of lateral roots relies on the tightly controlled radial expansion and asymmetric division of founder cells. The cellular mechanisms that license and ensure these features are unknown. Here, we quantitatively analyse F-actin and microtubule dynam...
Data
Figure S2. Microtubule bundling persistence 16 h after release of compression in two spr2‐2 GFP–MBD meristems.
Data
Figure S3. Methods used to rescale green intensities values, when exposure was too low, illustrated with GFP–MBD images (see also Experimental Procedures).
Data
Figure S1. Examples of cells pairs from indented meristems extracted from snapshots taken at time zero, i.e. before compression (left cell), and at time 6 h 45, i.e. 15 min after release of compression (right cell).
Data
Figure S4. Examples of analyses performed on compressed meristems in (a) spr2‐2 GFP–MBD; and (b) bot1‐7 GFP–MBD.
Article
Full-text available
Exogenous mechanical perturbations on living tissues are commonly used to investigate whether cell effectors can respond to mechanical cues. However, in most of these experiments, the applied mechanical stress and/or the biological response are described only qualitatively. We developed a quantitative pipeline based on microindentation and image an...
Article
Full-text available
Significance The control of cell division plane orientation is crucial in biology and most particularly in plants, in which cells cannot rearrange their positions, as they are glued to each other by their cell walls. Cell geometry has long been proposed to determine cell division plane orientation. Here, using statistical analysis, modeling, and li...
Article
Full-text available
In plants, the shoot apical meristem contains the stem cells and is responsible for the generation of all aerial organs. Mechanistically, organogenesis is associated with an auxin-dependent local softening of the epidermis. This has been proposed to be sufficient to trigger outgrowth, because the epidermis is thought to be under tension and stiffer...
Thesis
Morphogenesis during primary plant growth is driven by cell division and elongation. In turn, growth generates mechanical stress, which impacts cellular events and channels morphogenesis. Mechanical stress impacts the orientation of division plane in single animal cells; this remains to be fully demonstrated in plants. Currently, cell geometry is p...
Article
It is now well established that the orientation of the plane of cell division highly depends on cell geometry in plants. However, the related molecular mechanism remains largely unknown. Recent data in animal systems highlight the role of the cytoskeleton response to mechanical stress in this process. Interestingly, these results are consistent wit...
Article
Full-text available
Morphogenesis does not just require the correct expression of patterning genes; these genes must induce the precise mechanical changes necessary to produce a new form. Mechanical characterization of plant growth is not new; however, in recent years, new technologies and interdisciplinary collaborations have made it feasible in young tissues such as...
Article
Plant viruses use movement proteins (MPs) to modify intercellular pores called plasmodesmata (PD) to cross the plant cell wall. Many viruses encode a conserved set of three MPs, known as the triple gene block (TGB), typified by Potato virus X (PVX). In this paper, using live-cell imaging of viral RNA (vRNA) and virus-encoded proteins, we show that...

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