We are an academic group made up of CONICET researchers and grantees with over 15 years of seniority at the National University of Quilmes. On top of being scientists, we are professors and instructors at the National University of Quilmes. As regards research, we have developed two main lines of work: Nitrogen-fixing symbiosis directed by Luis Wall and Riboregulation of rhizospheric bacteria directed by Claudio Valverde.

Our teaching is in the areas of Biochemistry, Microbiology, Biology and Chemistry for the Biotechnology degree at U.N.Q. Our group has originated from research projects that filled in a thematic void on the national level and we have managed to position ourselves internationally through research cooperation. After working on topics related to rhizosphere microbiology and plant-microorganisms interactions, our focus of interest shifted to soil biology and we set about working on the early development of this BIOSPAS project which is our latest challenge.

Luis G. Wall.  Plantas, bacterias, hongos, mi mujer, el cocinero y su amante. 2da Edición corregida y ampliada. Siglo XXI. 2005. ISBN987-1220-25-1.  2da reimpresión 2008.

Solans M, Vobis G and LG Wall. 2009. Saprophytic actinomycetes promote nodulation in Medicago sativa – Sinorhizobium meliloti symbiosis in the presence of high N. Journal of Plant Growth Regulations (on lines first DOI 10.1007/s00344-009-9080-0)

Valverde, C. & Haas, D. 2008. “Small RNAs controlled by two-component systems”. In: “ Bacterial Signal Transduction: network and drug targets” (R. Utsumi, ed.), Chapter 5. Landes Bioscience / Springer. ISBN 978-0-387-78884-5.

Valverde, C. & K. Huss-Danell. 2008. “Carbon and nitrogen metabolism in actinorhizal nodules”. Chapter 7. In: Nitrogen-fixing actinorhizal symbioses (K. Pawlowski, W.E. Newton, eds.), Vol. 6 of Nitrogen fixation: origins, applications and research progress (series) (Ed., W.E. Newton), Springer. ISBN 978-1-4020-3540-1 .

Gabbarini LA and Wall LG. 2008. Analysis of nodulation kinetics in Frankia - Discaria trinervis symbiosis reveals different factors involved in the nodulation process. Physiologia Plantarum 133, 776-875.

Ferrari A and Wall LG. 2008. Co-inoculation of black locust with Rhizobium and Glomus on a desurfaced soil. Soil Science 173(3):195-202

Wall L. G. and A. M. Berry. 2007. Early Interactions, Infection and Nodulation in Actinorhizal Symbiosis, In Nitrogen Fixation: Origins, Applications, and Research Progress , Vol. 6 Nitrogen-fixing Actinorhizal Symbioses, Pawlowski, Katharina; Newton, William E. (Eds.), Springer, Chapter 6, ISBN: 978-1-4020-3540-1 pp 147-166.

Chaia E, Valverde C and LG Wall. 2006. Frankia isolates from different Discaria (Rhamnaceae) species show varied nodulation kinetics depending on the host. Current Microbiology 53, 523-528

Jousset A, E Lara, LG Wall and C Valverde. 2006. Secondary metabolites help biocontrol strain Pseudomonas fluorescens CHA0 to escape protozoan grazing. Applied Environmental Microbiology 72 (11), 7083-7090

Ferrari A y Wall LG. 2004. Utilización de árboles fijadores de nitrógeno para la revegetación de suelos marginales. Rev. Fac. Agron. 105(2) 63-87 ISSN 0041-8676

Valverde, C., Lindell, M., Wagner, E.G. & Haas, D. 2004. “A repeated GGA motif is critical for the activity and stability of the riboregulator RsmY in Pseudomonas fluorescens”. Journal of Biological Chemistry, 279: 25066:25074.

Valverde, C. Heeb, S., Keel, C. & Haas, D. 2003. “RsmY, a small regulatory RNA, is required in concert with RsmZ for GacA-dependent expression of biocontrol traits in Pseudomonas fluorescens CHA0”. Molecular Microbiology, 50: 1361-1379

Wall LG, Valverde C and Huss-Danell K. 2003. Regulation of nodulation in the absence of N2 is different in actinorhizal plants with different infection pathways. Journal of Experimental Botany 385:1253-1258

Wall LG. 2000. The actinorhizal symbiosis. The Journal of Plant Growth Regulation 19(2): 167-182