Know more

Our use of cookies

Cookies are a set of data stored on a user’s device when the user browses a web site. The data is in a file containing an ID number, the name of the server which deposited it and, in some cases, an expiry date. We use cookies to record information about your visit, language of preference, and other parameters on the site in order to optimise your next visit and make the site even more useful to you.

To improve your experience, we use cookies to store certain browsing information and provide secure navigation, and to collect statistics with a view to improve the site’s features. For a complete list of the cookies we use, download “Ghostery”, a free plug-in for browsers which can detect, and, in some cases, block cookies.

Ghostery is available here for free: https://www.ghostery.com/fr/products/

You can also visit the CNIL web site for instructions on how to configure your browser to manage cookie storage on your device.

In the case of third-party advertising cookies, you can also visit the following site: http://www.youronlinechoices.com/fr/controler-ses-cookies/, offered by digital advertising professionals within the European Digital Advertising Alliance (EDAA). From the site, you can deny or accept the cookies used by advertising professionals who are members.

It is also possible to block certain third-party cookies directly via publishers:

Cookie type

Means of blocking

Analytical and performance cookies

Realytics
Google Analytics
Spoteffects
Optimizely

Targeted advertising cookies

DoubleClick
Mediarithmics

The following types of cookies may be used on our websites:

Mandatory cookies

Functional cookies

Social media and advertising cookies

These cookies are needed to ensure the proper functioning of the site and cannot be disabled. They help ensure a secure connection and the basic availability of our website.

These cookies allow us to analyse site use in order to measure and optimise performance. They allow us to store your sign-in information and display the different components of our website in a more coherent way.

These cookies are used by advertising agencies such as Google and by social media sites such as LinkedIn and Facebook. Among other things, they allow pages to be shared on social media, the posting of comments, and the publication (on our site or elsewhere) of ads that reflect your centres of interest.

Our EZPublish content management system (CMS) uses CAS and PHP session cookies and the New Relic cookie for monitoring purposes (IP, response times).

These cookies are deleted at the end of the browsing session (when you log off or close your browser window)

Our EZPublish content management system (CMS) uses the XiTi cookie to measure traffic. Our service provider is AT Internet. This company stores data (IPs, date and time of access, length of the visit and pages viewed) for six months.

Our EZPublish content management system (CMS) does not use this type of cookie.

For more information about the cookies we use, contact INRA’s Data Protection Officer by email at cil-dpo@inra.fr or by post at:

INRA
24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

Menu Institut Sophia Agrobiotech Logo Marque Etat - République Française Logo_INRAE_noir Logo Université Côte d'Azur CNRS

Home page

Institut Sophia Agrobiotech

UMR INRA - Univ. Nice Sophia Antipolis - Cnrs

http://www.paca.inra.fr/institut-sophia-agrobiotech_eng/

The transcriptome of Arabidopsis roots infected with Phytophthora parasitica identifies members of the VQ and DC1 families required for plant defense and susceptibility

Inra PACA - Room A010 - Friday, January 30 at 11:00

Animation scientifique ISA
© Inra
In the framework of ISA scientific animation, Agnes Attard, IPO team will present its work on: "The transcriptome of Arabidopsis roots infected with Phytophthora parasitica identifies members of the VQ and DC1 families required for plant defense and susceptibility".

Abstract

Little is known about the responses of plant roots to filamentous pathogens, particularly for oomycetes. We investigated the overall changes in gene expression in A. thaliana roots challenged with P. parasitica. We analyzed various infection stages, from penetration by the pathogen and establishment of the interaction to the switch from biotrophy to necrotrophy. We then carried out functional analyses, to identify the functions involved in plant defense. The A. thaliana transcriptome displays a dynamic response to P. parasitica infection, from penetration onwards. Some genes were specifically coregulated during penetration and biotrophic growth of the pathogen. Many of these genes had functions relating to primary metabolism, plant growth, and defense responses. In addition, many genes encoding DC1 domain- and VQ motif-containing proteins were found to be upregulated in plant roots, early in infection. Inactivation of two DC1 domain-containing proteins and VQ29 genes significantly increased susceptibility to P. parasitica infection. These proteins thus contribute to root defense responses, restricting penetration and the biotrophic growth of the oomycete pathogen. By contrast, inactivation of another DC1 domain-containing proteins significantly reduced susceptibility to P. parasitica infection. This protein thus favours P. parasitica development in roots. Our data suggest that the particular genetic program specifically activated during penetration may determine the outcome of pathogen invasion.