Know more

About cookies

What is a "cookie"?

A "cookie" is a piece of information, usually small and identified by a name, which may be sent to your browser by a website you are visiting. Your web browser will store it for a period of time, and send it back to the web server each time you log on again.

Different types of cookies are placed on the sites:

  • Cookies strictly necessary for the proper functioning of the site
  • Cookies deposited by third party sites to improve the interactivity of the site, to collect statistics

Learn more about cookies and how they work

The different types of cookies used on this site

Cookies strictly necessary for the site to function

These cookies allow the main services of the site to function optimally. You can technically block them using your browser settings but your experience on the site may be degraded.

Furthermore, you have the possibility of opposing the use of audience measurement tracers strictly necessary for the functioning and current administration of the website in the cookie management window accessible via the link located in the footer of the site.

Technical cookies

Name of the cookie


Shelf life

CAS and PHP session cookies

Login credentials, session security



Saving your cookie consent choices

12 months

Audience measurement cookies (AT Internet)

Name of the cookie


Shelf life


Trace the visitor's route in order to establish visit statistics.

13 months


Store the anonymous ID of the visitor who starts the first time he visits the site

13 months


Identify the numbers (unique identifiers of a site) seen by the visitor and store the visitor's identifiers.

13 months

About the AT Internet audience measurement tool :

AT Internet's audience measurement tool Analytics is deployed on this site in order to obtain information on visitors' navigation and to improve its use.

The French data protection authority (CNIL) has granted an exemption to AT Internet's Web Analytics cookie. This tool is thus exempt from the collection of the Internet user's consent with regard to the deposit of analytics cookies. However, you can refuse the deposit of these cookies via the cookie management panel.

Good to know:

  • The data collected are not cross-checked with other processing operations
  • The deposited cookie is only used to produce anonymous statistics
  • The cookie does not allow the user's navigation on other sites to be tracked.

Third party cookies to improve the interactivity of the site

This site relies on certain services provided by third parties which allow :

  • to offer interactive content;
  • improve usability and facilitate the sharing of content on social networks;
  • view videos and animated presentations directly on our website;
  • protect form entries from robots;
  • monitor the performance of the site.

These third parties will collect and use your browsing data for their own purposes.

How to accept or reject cookies

When you start browsing an eZpublish site, the appearance of the "cookies" banner allows you to accept or refuse all the cookies we use. This banner will be displayed as long as you have not made a choice, even if you are browsing on another page of the site.

You can change your choices at any time by clicking on the "Cookie Management" link.

You can manage these cookies in your browser. Here are the procedures to follow: Firefox; Chrome; Explorer; Safari; Opera

For more information about the cookies we use, you can contact INRAE's Data Protection Officer by email at or by post at :


24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

Menu Logo Principal

Home page

Molecular physiology of wood formation team

Wood team


Our general objective is to decipher the molecular mechanisms underlying xylogenesis and involved in the establishment of wood properties. For trees, wood is a vital tissue, necessary for their development and their adaptation to changing environments. It performs three main physiological functions: mechanical support, sap conduction and storage of temporary reserves. For human uses, it is a very important renewable resource for biomaterials, energy and biomolecules, an alternative to fossil carbon and a way of sequestering carbon.

The team is developing functional genomics studies on poplar, a model species for tree biologists, with 1) the production of transgenic or CRISPR-Cas9 genome-edited poplars for selected genes of interest, 2) the fine analysis of transcriptomic and phenotypic modifications of the wood produced by these poplars, 3) the integration of experimental data into biological networks.

The mid-term objectives of the team are:

  • to identify the transcriptional regulatory networks involved in the differentiation of cambial cells and the deposition of wood secondary cell walls, by developing innovative approaches at the cellular level in transcriptomics (single cell sequencing) and cell wall microphenotyping (hyperspectral ATR-FTIR imaging).
  • to understand the role of the structure of lignins, essential compounds of secondary cell walls, on tree development and wood properties, regarding in particular their acylation and polymerisation.
  • to develop cellular engineering methods using Prime Editing in order to broaden the range of tools available for genome editing in poplar and to ease the design of any functional genomics strategy.

These research studies can develop locally thanks to PHENOBOIS platform and LICA laboratory.



Poplar is the model species. Most of the research activities are done on the INRA 717-1B4 clone (Populus tremula x Populus alba), for its ease to be transformed. For specific studies, some other clones from Populus trichocarpa, Populus nigra or Populus deltoides x P. nigra can be used.


Additional keywords

Gene networks, Secondary cell wall, Lignins, Molecular histology, Cell engineering


Team leaders

Annabelle Déjardin (Research officer) & Françoise Laurans (Research engineer)


Team members

Permanent staff : Nathalie Boizot (Research Engineer), Justine Corret (Assistant engineer), Annabelle Déjardin (Research officer), Françoise Laurans (Research engineer), Gilles Pilate (Research director)

Non-permanent staff : Camille ROSTANT-SANGLIER (Fixed-term contract), Yiyi TAN (PhD student, funding Centre Val de Loire Region 2022-2025), Laura VIMENET (PhD student, funding INRAE - Centre Val de Loire Region 2022-2025)

Yiyi TAN studies the dynamics of secondary cell wall formation in poplar wood fibres using Single Cell techniques.

Laura VIMENET studies the impact of lignin acylation on wood formation, tree development and biomass conversion to energy.


Current projects

APR-IR/ Centre Val de Loire Region PRESTO (High-throughput prediction of tree and vine vulnerability to biotic and abiotic stresses) - 2020-2023

ANR AAPG21 DEOX (Puzzling out the role of plant and fungal laccases with auxiliary enzymes during depolymerization and polymerization of lignin in a polysaccharide environment) - 2022-2026

PEPR Advanced Plant Breeding TYPEX (Toward highlY Predictable Editing of the plant genome lexicon) - 2023-2028



Lien Hal