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

PVY Organization

Zone de texte éditable et éditée


Agricultural Certification Services Inc./Potatoes NB

ACS is a not-for-profit, Canadian Food Inspection Agency (CFIA) approved diagnostic lab owned by the potato growers of New Brunswick. Located in Fredericton, NB, ACS has been in operation since 1996 and provides testing services to potato industries across Canada. ACS also provides testing for different strawberry viruses.

Missions of the team

Development of detection procedures using nucleic acids, gene cloning and sequencing including design of oligonucleotide primer, synthesis, purification and quantification, Reverse Transcription-Polymerase Chain Reaction (RT- PCR) and Real-Time PCR, agarose and polyacrylamide gel electrophoreses, enzyme-linked Immunosorbent Assay (ELISA).

Currently focused on development of diagnostic techniques for potato diseases particularly on detection and management of Dickeya, PVY and Verticillium.


ACS is equipped to do microbiological, serological and molecular research work and uses new technologies for testing, such as PCR and real-time PCR along with ELISA.


Dr. Mathuresh Singh (Head of the team)

Matturesh Singh


Tel.: 506-459-0293

Selected publications

  1. MacKenzie TDB, Lavoie J, Nie X and Singh M. 2017. Effectiveness of combined use of mineral oil and insecticide spray in reducing Potato virus Y (PVY) spread under field conditions in New Brunswick, Canada. Am J Potato Res 94: 70-80 pdf
  2. MacKenzie TDB, Nie X and Singh M. 2016. Crop Management practices and reduction of on-farm spread of Potato virus Y: a 5-year study in commercial potato fields in New Brunswick, Canada. Am J Potato Res 93: 552–563 pdf
  3. Fageria M, Nie X, A Gallagher and Singh M. 2015. Mechanical transmission of Potato virus Y (PVY) through seed cutting and plant wounding. Amer. J. Potato Res. 92:143–147
  4. MacKenzie TDB, Nie X and Singh M. 2015. RT-PCR and Real-Time RT-PCR methods for the detection of Potato virus Y in potato leaves and tubers. Plant Virology Protocols - Methods in Molecular Biology 1236: 13-26
  5. MacKenzie TDB, Fageria MS, Nie X and Singh M. 2014. Effects of crop management practices on current season spread of Potato virus Y. Plant Dis. 98: 213-222
  6. Fageria MS, Singh M, Nanayakkara U, Pelletier Y, Nie X and Wattie D. 2013.  Monitoring current season spread of Potato virus Y in potato fields using ELISA and real-time RT-PCR.Plant Dis. 97:641-644.
  7. Singh, M., Singh, R. P., Fageria, M. S., Nie, X., Coffin, R., and Hawkins, G. 2013. Optimization of a Real-time RT-PCR Assay and its Comparison with ELISA, Conventional RT-PCR and the Grow-out test for Large Scale Diagnosis of Potato virus Y in Dormant Potato Tubers. Am. J. Potato Res. 90:43-50.