from left to right, pink flamingos in Camargue, Le Corum Conference Venue, Théatre Comédie and the tram, Pic Saint Loup vineyards, Saint Guilhem le Désert (Photo credits : Le Corum, J. Guyonnet, G. Llambrich)
  Highlights and Facts

This conference followed on the First International RHIZOSPHERE Conference, which took place in Munich (Germany) in 2004 and gathered about 480 participants from worldwide to celebrate the centenary of the rhizosphere concept. With RHIZOSPHERE 2, the challenge was to gather an enlarged scientific audience, more open to developing countries while maintaining the high scientific standard of RHIZOSPHERE 2004, in order to warrant the launching of this new series of international conferences, at the interface between many disciplines. This was successfully achieved as more than 570 participants from 48 countries attended RHIZOSPHERE 2 from 26 to 31 August 2007 at Le Corum, Palais des Congrès de Montpellier. Compared with Munich in 2004, 24 % of the participants were coming from Africa, Central and South America and Asia (11% in Munich), partly as a result of the policy to encourage students and younger scientists from developing countries to attend, via grants which were awarded to 23 of them (full coverage of travel, on site costs and registration fees).

 

Distribution of participants per country 
(with more than one participant)

France 149 Sweden 13
Germany 75 Switzerland 11
United Kingdom 36 Finland 10
Italy 32 Brazil / Denmark 8
Japan 26 Algeria / Iran / Peop. Rep. China / Tunisia 7
Spain 20 Belgium / Czech Rep. / USA 6
Mexico 18 Cuba / Israel / Morroco / Russia / South Africa
5
Australia 17 Egypt / India / Senegal / Slovenia 4
Canada 15 Korea 3
Austria / The Netherlands 14 Estonia / New Zealand / Poland 2

 

In total 576 abstracts were submitted distributing among the 17 thematic sessions amongst which the largest were the following (number of abstracts in brackets) : Symbioses and plant growth promotion (110), Functional and structural diversity (56 -bacteria + 26 -fungi and fauna), Rhizoremediation and soil pollution (65), Fate and management of nutrients (59), Root growth and plant functional diversity (48), Cutting edge approaches/methodologies (41), Biological control and plant health management (35). Compared with RHIZOSPHERE 2004 in Munich where biodiversity gathered about 150 abstracts, and other issues such as plant growth promotion, root growth and development, plant nutrition and pollution/bioremediation were rather small, the distribution of abstracts has thus been fairly different, illustrating the dynamics of the rhizosphere scientific community. Another big surprise was the decreasing importance of rhizosphere « classics » such as plant health and molecular communication. Finally, in spite of the rather small number of abstracts, the physical interactions session gathered a rather huge audience for a parallel session.

 

The format of the conference followed that of RHIZOSPHERE 2004, the so-called ‘Toni’s Model’, walking in the footsteps of Anton Hartmann, his dedication warranting the success of Munich Conference. In total 19 invited conferences, including 12 plenary lectures, were given, as well as 84 volunteered oral communications, including 24 in plenary sessions. The selection pressure was rather large as 250 authors had expressed the wish to present and oral communication. The high standard of the talks was underlined by the many participants and record audience in spite of the nice weather and terraces in the vicinity of the venue. Besides the talks, about 330 posters were presented during 3 separate poster sessions. Poster awards were offered by three sponsors. The poster award recipients were the following :

 

Poster awards

1st Poster Session – FEMS Microbiology Ecology Best Poster Awards

> 1st Prize: Liesje De Schamphelaire (Ghent University)
From rice plant to power plant: microbial fuel cells generate electricity from root exudates

> 2nd Prize: Dominic Standing (University of Aberdeen)
High throughput screening of the effects of changing rhizosphere carbon flow on bacterial antibiotic production.

> 3rd Prize: Alessandra Salvioli (Università degli Studi di Torino)
The interaction between the arbuscular mycorrhizal fungus Gigaspora margarita and its endobacterium: a molecular analysis.


2nd Poster Session – New Phytologist Best Poster Awards

> 1st Prize: Aurélie Cébron (LIMOS, Nancy)
Phytoremediation of PAH-contaminated soil influence the global bacterial population and favoured PAH-degraders

> 2nd Prize: Katja Rosenberg (TU Darmstadt)
Soil amoeba rapidly change bacterial community composition in the Arabidopsis rhizosphere

> 3rd Prize: Miwa Okamoto (NARC-Hokkaido, Sapporo)
Organic nitrogen uptake and metabolite profiling of sorghum seedlings grown in sterile culture


3rd Poster Session – Springer Best Poster Awards

> 1st Prize: Gunnar Henkes (Research Centre Jülich)
Pseudomonas fluorescens systemically represses the negative effect of Fusarium graminearum infection on 11C allocation in barley roots

> 2nd Prize: Stephane Saj (University of Helsinki)
Are root-induced decomposer growth and plant N supply positively associated amongst grassland plants?

> 3rd Prize: Robert Koller (UMR INPL-INRA Nancy)
Protozoa increase N uptake of mycorrhizal plants via extra radical mycelium

 

Beyond its scientific success, RHIZOSPHERE 2 was also marked by several highlights of its social programme :

The Welcome Cocktail in the Hall of Le Corum on Sunday 26 August in the evening, proudly sponsored by Roullier Group, was entertained by Amaïsoul jazz band and was a display of some of the most innovative French cuisine, thanks to the creativity of Germain Traiteur, Montpellier.

The Gala Dinner on Thursday 30 August was organised in a magic and unique venue, the Valmagne Abbey at Villeveyrac (Hérault). For this special occasion, the so-called « Cathédrale des Vignes » which means « Cathedral of the Vineyards », its magnificent cloister and church enclosing enormous wine barrels was beautifully set by the Chef Germain Traiteur, who managed again to astonish the senses of the 520+ participants. This unique evening was punctuated by beautiful pieces of classical music played by the « Quintette de Cuivre (Brass) de l’Orchestre National de Montpellier », adding a final touch of class to this Gala Dinner.

A more limited number of delegates (about 150 in total) also attended one of the 6 field scientific excursions organised around Montpellier on Wednesday 29 August afternoon. This was a unique opportunity to visit experimental sites linked with the issues addressed at the Conference, as well as highlights of the local culture and the unique landscapes of the Languedoc region, its fine wines and cuisine.

The organisation of RHIZOSPHERE 2 was based on an efficient International Steering Committte chaired by Davey Jones (Univ. Bangor, Wales) and composed of 14 well-recognized European scientists and on a dedicated local organising committee which mobilised numerous French research and higher education institutions beside INRA : CIRAD, CNRS, IRD, SupAgro Montpellier and Université Montpellier 2, with the commitment of several labs of the large Montpellier campus : UMR BSR, B&PMP, CEFE, LSTM and UR SeqBio. The local organising committee was chaired by Philippe Hinsinger (INRA-SupAgro UMR Biogéochimie du Sol et de la Rhizosphère), while Sophie Pirkin was in charge of the administrative coordination.

Professor Hans Lambers (University of Western Australia), Editor in Chef of the journal Plant and Soil and Chair of the organising committee of the forthcoming Conference in this new series, RHIZOSPHERE 3 to be held in September 2011 at Perth, Australia, stressed as follows the succes of this scientific event in Montpellier : « I am writing to congratulate you with a fantastic meeting.  It was clearly one of the best I have ever attended.  Of course there were the usual problems wanting to attend competing talks, but that is no reflecting on the organisers - it is simply inevitable.  Well done!  I do hope people will have forgotten what a great job you and your team have done four years down the track. »

Three special issues of international, refereed journals are currently prepared, which will ultimately gather a selection of papers presented at RHIZOSPHERE 2 :
FEMS Microbiology Ecology, Plant and Soil et Soil Biology and Biochemistry.

from left to right, root nodule of Crotalaria, ectomycorrhizas of pine trees, bacteria attracted by exudates at the apex of a rice root, iron oxide precipitation in the rhizosphere of a eucalypt root, calcified roots in the garrigues bush (Photo credits : LSTM, UMR R&S, J. Guimberteau).
Directeur de la publication : Philippe Hinsinger - Coord. admin. : Sophie Pirkin
Conception / administration : Sébastien Lamy (coll. Corinne Dasen, Magalie Collet) - Graphisme : Georges LLambrich
Copyright © INRA 2006 | Crédits | Mentions légales | Mise à jour : 09 janvier 2008