S. Verger, Y. Long, A. Boudaoud & O. Hamant*
"A tension-adhesion feedback loop in plant epidermis".
eLIFE
7
e34460
(2018)
V. Mirabet*, P. Krupinski, O. Hamant, E.M. Meyerowitz, H. Jönsson & A. Boudaoud.*
"The self-organization of plant microtubules inside the cell volume yields their cortical localization, stable alignment, and sensitivity to external cues".
PLoS Comput. Biol.
14
e1006011
(2018)
L. Hong#, M. Dumond#, M. Zhu, S. Tsugawa, C.-B. Li, A. Boudaoud, O. Hamant & A.H.K. Roeder*
"Heterogeneity and Robustness in Plant Morphogenesis: From Cells to Organs".
Annual Reviews of Plant Biology
69
469–495
(2018)
Malivert A, Hamant O, Ingram G.
"The contribution of mechanosensing to epidermal cell fate specification.".
Curr Opin Genet Dev.
(2018)
PMID: 30006098
Amélie Andres-Robin, Mathieu Reymond, Antoine Dupire, Virginie Battu, Nelly Dubrulle, Grégory Mouille, Valérie Lefebvre, Jerome Pelloux, Arezki Boudaoud, Jan Traas, Charles Patrick Scutt, Françoise Monéger
"Evidence for the control of Arabidopsis gynoecium morphogenesis by ETTIN via cell wall dynamics".
Plant Physiology
American Society of Plant Biologists
(2018)
http://www.plantphysiol.org/content/early/2018/09/20/pp.18.00745
Negrutiu I, Hamant O
"Anthropocène".
In : Dictionnaire juridique des transitions écologiques.
104-107
eds: François Collart Dutilleul, Valérie Pironon, Agathe Van Lang
(2018)
2016
"N. Hervieux, M. Dumond, A. Sapala, A.-L....".
(2016)
N. Hervieux, M. Dumond, A. Sapala, A.-L. Routier-Kierzkowska, D. Kierzkowski, A. Roeder, R.S. Smith, A. Boudaoud* & O. Hamant*. A mechanical feedback restricts sepal growth and shape in Arabidopsis.Curr Biol. 26, 1019–1028 (2016).
"S. Tsugawa, N. Hervieux, O. Hamant, A....".
(2016)
S. Tsugawa, N. Hervieux, O. Hamant, A. Boudaoud, R.S. Smith, C.-B. Li* & T. Komatsuzaki. Extracting subcellular fibrillar alignment with error estimation: Application to microtubules.Biophys. J. 110, 1836–1844 (2016).
"J Gruel, B Landrein, P Tarr, C Schuster, Y...".
(2016)
J Gruel, B Landrein, P Tarr, C Schuster, Y Refahi, A Sampathkumar, O Hamant, EM Meyerowitz and H Jönsson (2016) An epidermis-driven mechanism positions and scales stem cell niches in plants. Sci. Adv. 2 : e1500989 (2016)
"M. Louveaux, J.-D. Julien, V. Mirabet, A....".
(2016)
M. Louveaux, J.-D. Julien, V. Mirabet, A. Boudaoud* & O. Hamant*. A cell division rule based on tensile stress in Arabidopsis thaliana.Proc. Natl. Acad. Sci. USA in press (2016).
"L. Hong+, M. Dumond+, S. Tsugawa+, A. Sapala,...".
(2016)
L. Hong+, M. Dumond+, S. Tsugawa+, A. Sapala, A.-L. Routier-Kierzkowska, Y. Zhou, C. Chen, A. Kiss, M. Zhu, O. Hamant, R. S. Smith, T. Komatsuzaki, C.-B. Li, A. Boudaoud* & A. H. K. Roeder*. Variable cell growth yields reproducible organ development through spatiotemporal averaging .Dev. Cell in press (2016).
"M. Louveaux, S. Rochette, L. Beauzamy, A....".
(2016)
M. Louveaux, S. Rochette, L. Beauzamy, A. Boudaoud & O. Hamant*. The impact of mechanical compression on cortical microtubules in Arabidopsis: a quantitative pipeline.Plant J. in press (2016).
"Interplay between miRNA regulation and mechanical stress for CUC gene expression at the shoot apical meristem.".
(2016)
PMID12345 F. Kateryna, B. Landrein & O. Hamant*. Interplay between miRNA regulation and mechanical stress for CUC gene expression at the shoot apical meristem.Plant Signal. Behav. 11, e1127497 (2016).
2015
"F. Boudon, J. Chopard, O. Ali, B. Gilles, O....".
(2015)
F. Boudon, J. Chopard, O. Ali, B. Gilles, O. Hamant, A. Boudaoud, J. Traas* & C. Godin*. A computational framework for 3D mechanical modeling of plant morphogenesis with cellular resolution.PLoS Comput. Biol. 11, e1003950 (2015).
"B. Landrein, Y. Refahi, F. Besnard, N....".
(2015)
B. Landrein, Y. Refahi, F. Besnard, N. Hervieux, V. Mirabet, A. Boudaoud, T. Vernoux & O. Hamant*. Meristem size contribute to the robustness of phyllotaxis in Arabidopsis. J. Exp. Bot. 66, 1317–1324 (2015).
"L. Beauzamy, M. Louveaux, O. Hamant & A....".
(2015)
L. Beauzamy, M. Louveaux, O. Hamant & A. Boudaoud*. Mechanically, the shoot apical meristem of Arabidopsis behaves like a shell inflated by a pressure of about 1 MPa.Front. Plant Sci. 6,1038 (2015).
"B. Landrein, A. Kiss, M. Sassi, A. Chauvet,...".
(2015)
B. Landrein, A. Kiss, M. Sassi, A. Chauvet, P. Das, M. Cortizo, P. Laufs, S. Takeda, M. Aida, J. Traas, T. Vernoux, A. Boudaoud & O. Hamant*. Mechanical stress contributes to the expression of the STM homeobox gene in Arabidopsis shoot meristems. eLIFE 4:e07811 (2015).
"P. Barbier de Reuille, A.-L. Routier-Kierzkowska,".
(2015)
P. Barbier de Reuille, A.-L. Routier-Kierzkowska, D. Kierzkowski,G.W. Bassel, T. Schüpbach, G. Tauriello, N. Bajpai, S. Strauss, A. Weber, A. Kiss, A. Burian, H. Hofhuis, A. Sapala, M. Lipowczan,M.B. Heimlicher , S. Robinson,E.M. Bayer, K. Basler, P. Koumoutsakos, A.H.K. Roeder, T. Aegerter-Wilmsen, N. Nakayama, M.Tsiantis, A. Hay, D. Kwiatkowska, I. Xenarios, C. Kuhlemeier & R.S. Smith (2015) MorphoGraphX: A platform for quantifying morphogenesis in 4D.eLife 4:e05864, http://dx.doi.org/10.7554/eLife.05864
2014
"Sassi M, Ali O, Boudon F, Cloarec G, Abad U,...".
(2014)
Sassi M, Ali O, Boudon F, Cloarec G, Abad U, Cellier C, Chen X, Gilles B, Milani P, Friml J, Vernoux T, Godin C, Hamant O, Traas J. (2014) An auxin-mediated shift toward growth isotropy promotes organ formation at the shoot meristem in Arabidopsis. Curr Biol. 24(19):2335-42.
"Traas J, Sassi M. (2014) Plant development:...".
(2014)
Traas J, Sassi M. (2014) Plant development: from biochemistry to biophysics and back. Curr Biol. 24(6):R237-8.
"Besnard F, Refahi Y, Morin V, Marteaux B,...".
(2014)
Besnard F, Refahi Y, Morin V, Marteaux B, Brunoud G, Chambrier P, Rozier F, Mirabet V, Legrand J, Lainé S, Thévenon E, Farcot E, Cellier C, Das P, Bishopp A, Dumas R, Parcy F, Helariutta Y, Boudaoud A, Godin C, Traas J, Guédon Y, Vernoux T (2014) Cytokinin signalling inhibitory fields provide robustness to phyllotaxis. Nature Jan 16;505(7483):417-21.
"Landrein B. and Vernoux T. (2014) Auxin,...".
(2014)
Landrein B. and Vernoux T. (2014) Auxin, chief architect of the shoot Apex. In Auxin and its role in plant development, Zazimalova et al., eds (Springer-Verlag Wien), pp. 191-212
"Boudaoud, A., Burian, A., Borowska-Wykret,...".
(2014)
Boudaoud, A., Burian, A., Borowska-Wykret, D., M., Uyttewaal, M., Wrzalik, R., Kwiatkowska, D and Hamant, O. (2014). FibrilTool, an ImageJ plugin to quantify fibrillar structures in raw microscopy images.NATURE PROTOCOLS 9, 457.
"Hamant, O., Das, P. Burian, A. (2014)....".
(2014)
Hamant, O., Das, P. Burian, A. (2014). Time-lapse imaging of developing meristems using confocal laser scanning microscope. METHODS IN MOLECULAR BIOLOGY 1080, 111.
"Milani, P., Mirabet, V., Cellier, C., Rozier,...".
(2014)
Milani, P., Mirabet, V., Cellier, C., Rozier, F., Hamant, O., Das, P., Boudaoud, A. (2014). Matching patterns of gene expression to mechanical stiffness at cell resolution through quantitative tandem epifluorescence and nanoindentation.PLANT PHYSIOLOGY 165, 1399.
"Sampathkumar, A., Krupinski, P., Wightman,...".
(2014)
Sampathkumar, A., Krupinski, P., Wightman, R., Milani, P., Berquand, A., Boudaoud, A., Hamant, O., Jonsson, H., Meyerowitz, E.M. (2014). Sub-cellular and supra-cellular mechanical stress prescribes cytoskeleton behavior in Arabidopsis cotyledon pavement cells.eLife 2014;3:e01967 http://dx.doi.org/10.7554/eLife.01967
2013
"Wells DM, Laplaze L, Bennett MJ, Vernoux T....".
(2013)
Wells DM, Laplaze L, Bennett MJ, Vernoux T. (2013) Biosensors for phytohormone quantification: challenges, solutions, and opportunities. Trends Plant Sci. 18(5):244-9. (Review)
"Henry A, Monéger F, Samal A, Martin OC. (2013)...".
(2013)
Henry A, Monéger F, Samal A, Martin OC. (2013) Network function shapes network structure: the case of the Arabidopsis flower organ specification genetic network. Mol Biosyst. 2013 Jul 4;9(7):1726-35.
"Mirabet V, Besnard F, Vernoux T, Boudaoud A....".
(2013)
Mirabet V, Besnard F, Vernoux T, Boudaoud A. (2012) Noise and robustness in phyllotaxis. PLoS Comput Biol. 2012;8(2):e1002389.
"Sassi M, Wang J, Ruberti I, Vernoux T, Xu J....".
(2013)
Sassi M, Wang J, Ruberti I, Vernoux T, Xu J. (2013) Shedding light on auxin movement: Light-regulation of polar auxin transport in the photocontrol of plant development. Plant Signal Behav. 18;8(3). (Review)
"Sassi M, Vernoux T. (2013) Auxin and self-organiza".
(2013)
Sassi M, Vernoux T. (2013) Auxin and self-organization at the shoot apical meristem. J Exp Bot. 2013 Jun;64(9):2579-92. (Review)
"Traas J. (2013) Phyllotaxis. Development.140(2):24".
(2013)
Traas J. (2013) Phyllotaxis. Development.140(2):249-53. (Review).
"Walker ML, Farcot E, Traas J, Godin C. (2013)...".
(2013)
Walker ML, Farcot E, Traas J, Godin C. (2013) The flux-based PIN allocation mechanism can generate either canalyzed or diffuse distribution patterns depending on geometry and boundary conditions. PLoS One. 2013;8(1):e54802.
"Landrein B, Hamant O. How mechanical stress...".
(2013)
Landrein B, Hamant O. How mechanical stress controls microtubule behavior and morphogenesis in plants: history, experiments and revisited theories.PLANT J. 75, 324-38
"Louveaux, M. and Hamant, O. (2013). The...".
(2013)
Louveaux, M. and Hamant, O. (2013). The mechanics behind cell division. CURRENT OPINION IN PLANT BIOLOGY 16, 774.
"Hamant, O. (2013). Cell Biology: Cytoskeleton...".
(2013)
Hamant, O. (2013). Cell Biology: Cytoskeleton Network Topology Feeds Back on Its Regulation.CURRENT BIOLOGY 23, R963.
"Hamant, O. (2013). Widespread mechanosensing...".
(2013)
Hamant, O. (2013). Widespread mechanosensing controls the structure behind the architecture in plants.CURRENT OPINION IN PLANT BIOLOGY 16, 654.
"de Bossoreille de Ribou, S., Douam, F.,...".
(2013)
de Bossoreille de Ribou, S., Douam, F., Hamant, O., Frohlich, M.W. and Negrutiu I. (2013). Plant science and agricultural productivity: why are we hitting the yield ceiling?PLANT SCIENCE 210, 159.
"Hamant, O. (2013). Integrative Cell Biology;...".
(2013)
Hamant, O. (2013). Integrative Cell Biology; Katanin at the Crossroads. CURRENT BIOLOGY 23, R206.
"Landrein, B., Lathe, R., Bringmann, M.,...".
(2013)
Landrein, B., Lathe, R., Bringmann, M., Vouillot, C., Ivakov, A., Boudaoud, A., Persson, S., and Hamant, O. (2013). Impaired Cellulose Synthase Guidance Leads to Stem Torsion and Twists Phyllotactic Patterns in Arabidopsis.CURRENT BILOGY 23, 895.
2012
"Reymond MC, Brunoud G, Chauvet A, Martínez-Garcia".
(2012)
Reymond MC, Brunoud G, Chauvet A, Martínez-Garcia JF, Martin-Magniette ML, Monéger F, Scutt CP. (2012) A light-regulated genetic module was recruited to carpel development in Arabidopsis following a structural change to SPATULA. Plant Cell. 2012 Jul;24(7):2812-25
"Middleton AM, Farcot E, Owen MR, Vernoux T....".
(2012)
Middleton AM, Farcot E, Owen MR, Vernoux T. (2012) Modeling regulatory networks to understand plant development: small is beautiful. Plant Cell. 24(10):3876-91. (review)
"Murray JA, Jones A, Godin C, Traas J. (2012)...".
(2012)
Murray JA, Jones A, Godin C, Traas J. (2012) Systems analysis of shoot apical meristem growth and development: integrating hormonal and mechanical signaling. Plant Cell 24 (10):3907-19. (review)
"Band LR, Wells DM, Larrieu A, Sun J, Middleton".
(2012)
Band LR, Wells DM, Larrieu A, Sun J, Middleton AM, French AP, Brunoud G, Sato EM, Wilson MH, Péret B, Oliva M, Swarup R, Sairanen I, Parry G, Ljung K, Beeckman T, Garibaldi JM, Estelle M, Owen MR, Vissenberg K, Hodgman TC, Pridmore TP, King JR, Vernoux T,* Bennett MJ.* (2012) Root gravitropism is regulated by a transient lateral auxin gradient controlled by a tipping-point mechanism. Proc Natl Acad Sci U S A. 2012 Mar 20;109(12):4668-73. (*corr authors)
"Brunoud G, Wells DM, Oliva M, Larrieu A,...".
(2012)
Brunoud G, Wells DM, Oliva M, Larrieu A, Mirabet V, Burrow AH, Beeckman T, Kepinski S, Traas J, Bennett MJ, Vernoux T (2012) A novel sensor to map auxin response and distribution at high spatio-temporal resolution. Nature 482: 103-106.
"Uyttewaal M, Burian A, Alim K, Landrein B,...".
(2012)
Uyttewaal M, Burian A, Alim K, Landrein B, Borowska-Wykręt D, Dedieu A, Peaucelle A, Ludynia M, Traas J, Boudaoud A, Kwiatkowska D, Hamant O. (2012) A katanin-dependent microtubule response to mechanical stress enhances growth gradients between neighboring cells in Arabidopsis. Cell 149, 439-451
"Sassi M, Lu Y, Zhang Y, Wang J, Dhonukshe P,...".
(2012)
Sassi M, Lu Y, Zhang Y, Wang J, Dhonukshe P, Blilou I, Dai M, Li J, Gong X, Jaillais Y, Yu X, Traas J, Ruberti I, Wang H, Scheres B, Vernoux T, Xu J. (2012) COP1 mediates the coordination of root and shoot growth by light through modulation of PIN1- and PIN2-dependent auxin transport in Arabidopsis. Development. 2012 Sep;139(18):3402-12
"Bringmann M, Landrein B, Schudoma C, Hamant...".
(2012)
Bringmann M, Landrein B, Schudoma C, Hamant O, Hauser MT, Persson S. (2012) Cracking the elusive alignment hypothesis: the microtubule-cellulose synthase nexus unraveled.TRENDS PLANT SCI. 17, 666-74
"Alim, K., Hamant, O. and Boudaoud, A. (2012)....".
(2012)
Alim, K., Hamant, O. and Boudaoud, A. (2012). Regulatory role of cell division rules on tissue growth heterogeneity.FRONTIERS IN PLANT SCIENCES 3,174.
2011
La Rota C, Chopard J, Das P, Paindavoine S, Rozier F, Farcot E, Godin C, Traas J, Monéger F
"A data-driven integrative model of sepal primordium polarity in Arabidopsis".
Plant Cell
23
4318-33
(2011)
La Rota C, Chopard J, Das P, Paindavoine S, Rozier F, Farcot E, Godin C, Traas J, Monéger F. (2011) A data-driven integrative model of sepal primordium polarity in Arabidopsis.Plant Cell 23(12):4318-33.
"Vernoux T, Brunoud G, Farcot E, Morin V, Van...".
(2011)
Vernoux T, Brunoud G, Farcot E, Morin V, Van den Daele H, Legrand J, Oliva M, Das P, Larrieu A, Wells D, Guedon Y, Armitage L, Picard F, Guyomarc’h S, Cellier C, Parry G, Koumproglou R, Doonan JH, Estelle M, Godin C, Kepinski S, Bennett M, De Veylder L, Traas J (2011) The auxin signalling network translates dynamic input into robust patterning at the shoot apex. Mol Syst Biol 7: 508.
"Besnard F, Vernoux T, Hamant O (2011)...".
(2011)
Besnard F, Vernoux T, Hamant O (2011) Organogenesis from stem cells in planta: multiple feedback loops integrating molecular and mechanical signals. Cell Mol Life Sci. 68(17) : 2885-906. (Review).
"Santuari L, Scacchi E, Rodriguez-Villalon A,...".
(2011)
Santuari L, Scacchi E, Rodriguez-Villalon A, Salinas P, Dohmann EM, Brunoud G, Vernoux T, Smith RS, Hardtke CS. (2011) Positional information by differential endocytosis splits auxin response to drive Arabidopsis root meristem growth. Curr Biol. 21(22):1918-23.
"Milani P, Gholamirad M, Traas J, Arnéodo A,...".
(2011)
Milani P, Gholamirad M, Traas J, Arnéodo A, Boudaoud A, Argoul F, Hamant O. (2011) In vivo analysis of local wall stiffness at the shoot apical meristem in Arabidopsis using atomic force microscopy. Plant J. 67(6):1116-1123.
"Besnard F, Vernoux T, Hamant O (2011)...".
(2011)
Besnard F, Vernoux T, Hamant O (2011) Organogenesis from stem cells in planta: multiple feedback loops integrating molecular and mechanical signals. Cell Mol Life Sci. 68(17):2885-906. (Review).
"Romanel E, Das P, Amasino RM, Traas J,...".
(2011)
Romanel E, Das P, Amasino RM, Traas J, Meyerowitz E, Alves-Ferreira M. (2011) Reproductive Meristem22 is a unique marker for the early stages of stamen development. Int J Dev Biol. 55(6):657-64.
"Santuari L, Scacchi E, Rodriguez-Villalon A,...".
(2011)
Santuari L, Scacchi E, Rodriguez-Villalon A, Salinas P, Dohmann EM, Brunoud G, Vernoux T, Smith RS, Hardtke CS. (2011) Positional information by differential endocytosis splits auxin response to drive Arabidopsis root meristem growth. Curr Biol. 21(22):1918-23.
"Mirabet V, Das P, Boudaoud A, Hamant O....".
(2011)
Mirabet V, Das P, Boudaoud A, Hamant O. (2011) The role of mechanical forces in plant morphogenesis.Annu Rev Plant Biol. 62:365-85.
2010
"Hamant O, Traas J (2010) The mechanics behind...".
(2010)
Hamant O, Traas J (2010) The mechanics behind plant development – Tansley review.New Phytol.185(2):369-85.
"Hamant O, Pautot V. (2010) Plant development:...".
(2010)
Hamant O, Pautot V. (2010) Plant development: a TALE story.C R Biol. 333(4):371-81.
"Fernandez R, Das P, Mirabet V, Moscardi E,...".
(2010)
Fernandez R, Das P, Mirabet V, Moscardi E, Traas J, Verdeil JL, Malandain G, Godin C. (2010) Imaging plant growth in 4D: robust tissue reconstruction and lineaging at cell resolution.Nat Methods. 7(7):547-53.
"Boudaoud A. (2010) An introduction to the...".
(2010)
Boudaoud A. (2010) An introduction to the mechanics of morphogenesis for plant biologists.Trends Plant Sci. 15(6):353-60.
"Cadot O, Touzé C, Boudaoud A. (2010) Linear...".
(2010)
Cadot O, Touzé C, Boudaoud A. (2010) Linear versus nonlinear response of a forced wave turbulence system. Phys Rev E Stat Nonlin Soft Matter Phys. 82(4 Pt 2):046211.
"Hamant O, Traas J, Boudaoud A. (2010)...".
(2010)
Hamant O, Traas J, Boudaoud A. (2010) Regulation of shape and patterning in plant development.Curr Opin Genet Dev. 20(4):454-9.
"Heisler MG, Hamant O, Krupinski P, Uyttewaal...".
(2010)
Heisler MG, Hamant O, Krupinski P, Uyttewaal M, Ohno C, Jönsson H, Traas J, Meyerowitz EM. (2010) Alignment between PIN1 polarity and microtubule orientation in the shoot apical meristem reveals a tight coupling between morphogenesis and auxin transport.PLoS Biol. 8(10):e1000516.
Fernandez R, Das P, Mirabet V, Moscardi E, Traas J, Verdeil JL, Malandain G, Godin C.
"Imaging plant growth in 4D : robust tissue reconstruction and lineaging at cell resolution.".
Nat Methods.
7
547-53
(2010)
2009
"Das, P., Toshiro Ito, Frank Wellmer, Teva...".
(2009)
Das, P., Toshiro Ito, Frank Wellmer, Teva Vernoux, Annick Dedieu, Jan Traas, Elliot M. Meyerowitz (2009). Floral stem cell termination involves the direct regulation of AGAMOUS by PERIANTHIA.Development 136, 1605-1611
"Traas J, Hamant O (2009) From genes to shape:...".
(2009)
Traas J, Hamant O (2009) From genes to shape: understanding the control of morphogenesis at the shoot meristem in higher plants using systems biology.C R Biol. 332: 974-985.
"Corson F, Hamant O, Bohn S, Traas J, Boudaoud...".
(2009)
Corson F, Hamant O, Bohn S, Traas J, Boudaoud A, Couder Y (2009). Turning a plant tissue into a living cell froth through isotropic growth. Proc Natl Acad Sci USA 106:8453-8458
"Uyttewaal M, Traas J, Hamant O (2009)...".
(2009)
Uyttewaal M, Traas J, Hamant O (2009) Integrating physical stress, growth, and development.Curr Opin Plant Biol. 13(1):46-52.
2008
"Hamant O., Heisler MG., Jonsson H., Krupinski...".
(2008)
Hamant O., Heisler MG., Jonsson H., Krupinski P., Uyttewaal M., Bokov P., Corson F., Sahlin P., Boudaoud A., Meyerowitz EM., Couder Y., Traas J. (2008) Developmental patterning by mechanical signals in Arabidopsis.Science 322 (5908), 1650-1655
Development relies on a complex network of molecular effectors that ultimately modify the mechanical properties of cells and control shape changes. In turn, mechanical forces can also feedback on the molecular network to govern development. Several mechanosensitive proteins have been identified in animals but their role in multicellular development remains poorly documented. Plants are ideal systems to study mechanotransduction in development because their mechanics is mainly mediated by the cell wall. We have already characterized the response of microtubules to mechanical stress using a set of micromechanical tools (e.g. Hamant et al., 2008 Science, Uyttewaal et al., 2012 Cell) and we propose to investigate the role of mechanotrasnduction in plant development, using Arabidopsis cell culture, cotyledons and shoot apical meristems as experimental systems.
Morphodynamics
Leader : Jan Traas
Plant architecture largely depends on a group of stem cells called meristems, which initiate organ and determine their position. As a consequence, meristems are responsible for a number of obvious agronomic traits. It is therefore important to study them and understand how they function.
The aim of our project is to understand the function of the shoot apical meristem, which generates all the aerial parts of the plant. In particular, we investigate the initiation of floral buds in the model plant Arabidopsis. In order to better understand this process, we use molecular genetic and genomic approaches combined to live imaging. We conduct multiscale analyses at different levels, from molecule to tissue in order to integrate them and try to understand how gene regulatory networks control shapes.
In parallel, we develop modeling approaches in order to integrate our results in a virtual meristem, which will be used to formulate new hypotheses.
L’architecture de la plante dépend pour une grande partie de groupes de cellules souches appelés méristèmes, qui initient les organes et en déterminent la position.
Les méristèmes définissent donc un certain nombre de traits d’intérêt agronomique évident, d’où l’importance d’étudier et comprendre leur (...)
Olivier HAMANT
Jan TRAAS
Christophe TREHIN
Steve de BOSSOREILLE
Mengying LIU
Thomas STANISLAS
Stéphane VERGER
Feng ZHAO
Chie KODERA
Mechanics and Development
Development relies on a complex network of molecular effectors that ultimately modify the mechanical properties of cells and control shape changes. In turn, mechanical forces can also feedback on the molecular network to govern development. Several mechanosensitive proteins have been identified in animals but their role in multicellular development remains poorly documented. Plants are ideal systems to study mechanotransduction in development because their mechanics is mainly mediated by the cell wall. We have already characterized the response of microtubules to mechanical stress using a set of micromechanical tools (e.g. Hamant et al., 2008 Science, Uyttewaal et al., 2012 Cell) and we propose to investigate the role of mechanotrasnduction in plant development, using Arabidopsis cell culture, cotyledons and shoot apical meristems as experimental systems.
Plant architecture largely depends on a group of stem cells called meristems, which initiate organ and determine their position. As a consequence, meristems are responsible for a number of obvious agronomic traits. It is therefore important to study them and understand how they function.
