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Strawberry with phytoplasma disease, courtesy of Annette Dullemans PRI

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Martin Verbeek
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Working group 4: Phytoplasma / host interactions


Dr. Saskia Hogenhout (United Kingdom)
Dr. Xavier Foissac (France)

WG4 members (pdf file, please click to download)


Phytoplasma Genome Sequencing Initiative (PGSI) Annotation School II, The John Innes Centre (JIC), Norwich, UK, April 29 May 03, 2013. 

New: download minutes and pictures



Phytoplasma Genome Sequencing Initiative (PGSI) annotation school
22 -24 February 2012, The John Innes Centre, Norwich, UK
Click here to download flyer (pdf)

Download minutes PGSI annotation school 22-24 February 2012


WG1-WG4: School on bioinformatical analyses of phytoplasma sequences

5-8 July, 2011, Vilnius, Lithuania

Download lessons and lectures given by Trainers: Bojan Duduk, Xavier Foissac, Michael Kube, Assunta Bertaccini, Vincent Robert and Gianluigi Cardinali

Click here for overview and download lessons



NEW: Abstracts of workshop on Phytoplasma classification, Friday July 16th, 2010, Chianciano Terme Siena - Italy (click to download pdf)

NEW: Pictures of the workshop, click here for the photo gallery



Tasks of Working Group 4 "Phytoplasma/host interactions"

The main objective of working group 4 (WG4) "Phytoplasma/host interactions" is to collect current and future genome sequence/molecular information from phytoplasmas and their hosts and to provide this information to the (phytoplasma) community in a format that is understandable to non molecular biologists so that the available information can be used in management strategies.

More specifically, WG4 was assigned the following tasks:

1. Integrate genomics and bioinformatics information into a single website to allow password-protected access for all members of this Action

2. Identify model systems in which to co-ordinate effort and research funding to enhance understanding of phytoplasma/host interactions

3. Establish a link between phytoplasma genomics achievements and insect vector transmission

4. Co-ordinate research activities on the molecular basis of phytoplasma diseases in plants and insects.


Phytoplasma genome sequence information can be found on the following web sites:

NCBI accession numbers of phytoplasma chromosomes:

Candidatus Phytoplasma asteris, Onion Yellows phytoplasma strain M (OY-M): NC_005303

Candidatus Phytoplasma asteris, Aster Yellows phytoplasma strain Witches' Broom (AY-WB): NC_007716

Candidatus Phytoplasma mali, Apple Proliferation Phytoplasma (AP): NC_011047

Candidatus Phytoplasma australiense, Australian Grapevine Yellows (AUSGY):NC_010544


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