During this webinar, Dr. Bovio, from the Plant Reproduction and Development Laboratory at ENS, will speak on using AFM to assess turgor pressure in plants at the single-cell level.
Prof. Yakubov, from the School of Food Science and Nutrition, will discuss the BioFluidic Microscope (BFM), an integrated platform that combines confocal imaging with atomic force and nanofluidic functionality to explore biological and bioinspired systems in five dimensions.
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Dr. Simoné Bovio, RDP laboratory and PLATIM-LyMIC imaging platform, Ecole Normale Supérieure, Lyon, France, will speak on the Measurement of Plant Cells Turgor Pressure by AFM Indentation:
Plants cells can be imagined as balloons under pressure. Walled cells, as in plants, fungi or bacteria, can sustain a hydrostatic overpressure (turgor pressure) due to the osmotic pressure difference between the inside and outside of the cell. Turgor pressure (up to several MPa in plants) is the driving force of cell growth and participates in the overall mechanical stability of the plant. The interplay between turgor pressure and cell wall properties tailors cell growth (in rate and direction) and finally the overall morphogenesis (the generation of form) of a plant. Several approaches can be used to measure the turgor pressure (pressure chamber, psychrometry, pressure probe, etc.) that allow either an organ level or cell-level, but destructive, measurement. Furthermore, none of those techniques are adapted to small cells (below few tens of microns in radius). In this webinar, I will discuss the use of AFM indentation measurements to assess turgor pressure on a single cell level. I will present the different strategies developed in our lab and by other groups as well, highlighting their advantages and limitations. I will then show the results of an ongoing investigation on Physcomitrium patens phyllids.
Prof. Gleb E. Yakubov, School of Food Science and Nutrition, University of Leeds, United Kingdom, will present Biofluidic Microscope: An Integrated Atomic and Fluidic Force – High-Resolution Confocal Microscopy Imaging Platform:
The BioFluidic Microscope (BFM) is a new, integrated imaging platform that combines ultra-fast confocal imaging with atomic force and nanofluidic functionality. The BFM enables the characterisation of localised biochemical and physiological processes across three dimensions of space, as well as time and force, thus offering a step-change capability for exploring biological and bioinspired systems in five dimensions: 3D space, time, and force (5D microscopy). The BFM unlocks new avenues for applications in soft matter, biomechanics, biomaterials, biofilm research, and the food and plant sciences. Its unique design allows it to accommodate a wide range of complex biological samples, enabling quantitative and predictive characterisation of single molecules, single cells, and tissues, as well as whole organisms or their larger fragments. The BFM’s applications span several domains, delivering benefits across a broad range of research areas, including biofilm dynamics, plant development, and cell physiology.
This talk will discuss the implementation of the BFM and illustrate its capabilities using two case studies: (a) nanomechanical mapping of A. thaliana roots and (b) interfacial interactions in plant-derived food materials. This will be followed by a discussion of approaches for the analysis of nanomechanical data in complex systems.
Dr. Simoné Bovio
RDP laboratory and PLATIM-LyMIC imaging platform, Ecole Normale Supérieure, Lyon, France
Dr. Simoné Bovio works as a microscopy engineer in the RDP laboratory and at the PLATIM-LyMIC imaging platform at the Ecole Normale Supérieure in Lyon, France. He obtained his master’s degree in physics at the University of Milan where he also earned his PhD at the CIMaINa lab under the supervision of Dr. Alessandro Podestà in 2012. After spending the rest of 2012 in the Amazon rain forest in Ecuador with an Italian NGO, in 2013 he joined the team of Frank Lafont, the CMPI, in Lille, France, where he made his first steps in biology through the study of the mechanical behavior of animal and human cells using AFM nano-indentation. He has had a permanent position at the ENS in Lyon since 2017, where he started developing his expertise in indentation measurements on living plant samples and where his interest for the measurement of turgor pressure developed and grew.
Prof. Gleb Yakubov
School of Food Science and Nutrition, University of Leeds, United Kingdom
Professor Gleb Yakubov holds the Chair in Food Biopolymers at the University of Leeds. He completed his PhD in Physical Chemistry at the Max Planck Institute for Polymer Research, specialising in biopolymer systems and colloidal probe AFM force spectroscopy. Prior to joining Leeds, he held academic positions at the University of Nottingham and The University of Queensland, following nearly a decade in industrial R&D within the global consumer goods sector.
Professor Yakubov’s research sits at the interface of colloid science, soft matter physics, polymer science, and biophysics. His work focuses on understanding how biopolymer structure and interactions govern the functionality of biopolymer systems, such as foods, plant cell walls, biomaterials, and biopolymer gels. His expertise includes colloidal probe AFM force spectroscopy, rheology, and complex carbohydrate analysis. He leads the Food Biopolymer Research Laboratory, where interdisciplinary approaches are used to investigate the structuring and mechanics of complex biological and food materials. Among the laboratory’s recent innovations is the BioFluidic Microscope (BFM), an integrated platform combining ultra-fast confocal imaging with atomic force microscopy and nanofluidic functionality, enabling high-resolution exploration of localised biochemical and physiological processes in biological and bioinspired systems.
Professor Yakubov has authored more than 150 peer-reviewed papers and book chapters, holds several patents, and has contributed widely to advances in food biophysics, biomaterials, and sustainable food technologies. His work has influenced contemporary understanding of polysaccharide functionality, lubrication phenomena, plant-based materials, and the development of healthier and more sustainable foods.