Cristina Marzachì

General interest

Research on the field of molecular-plant-microbe-insect interactions, with special focus of phytoplasmas. These wall-less bacteria are transmitted by phloem feeding hemipterans (cicadellids and psyllids) to several plant species where they cause economically important diseases. Control of phytoplasma diseases relies mainly on insecticide treatments to limit vector population, with deleterious impact on the environment. A better knowledge of these pathogens, their diversity in nature, the mechanism that rule their interactions with plant and insect hosts are important pre-requisites to develop new environmental friendly control strategies for phytoplasmoses.

Specific interest

Research activity in the lab focuses on the interaction among phytoplasma, plant and insect vector to identify phytoplasma genes involved in the determination of vector specificity and symptom development in the infected plant. Chrysanthemum yellows isolate of ‘Candidatus Phytoplasma asteris’ and Flavescence dorée (16SrV-C) phytoplasma are the main focus of the research. For both pathogens we have developed experimental model systems. Phytoplasma membrane genes, known hot spots for positive selection, are the target for our research. The direct and indirect effects of several abiotic and biotic elicitors of plant resistance on the interaction among plant/phytoplasma and vector are also studied, both with a field scale approach, to provide insights on the effects of these elicitors on phytoplasma epidemiology, and a laboratory scale approach, to highlight the molecular aspects of the interaction.




  • 2013 - Flavescence dorée phytoplasma titre in field-infected Barbera and Nebbiolo grapevines - Roggia C., Caciagli P., Galetto L., Pacifico D., Veratti F., Bosco D., Marzachì C. - Plant Pathology,
  • 2013 - Selection of reference genes from two leafhopper species challenged by phytoplasma infection, for gene expression studies by RT-qPCR - Galetto, L., Bosco, D. and Marzachì, C. - BMC Research Notes, 6:1-10
  • 2013 - Flavescence dorée phytoplasma deregulates stomatal control of photosynthesis in Vitis vinifera - Vitali M., Chitarra W., Galetto L., Bosco D., Marzachì C., Gullino M.L., Spanna F., Lovisolo, C. - Annals of Applied Biology, 335-346
  • 2013 - Molecular characterization, phylogenetic comparison and serological relationship of the Imp protein of several ‘Candidatus Phytoplasma aurantifolia’ strains - SIAMPOUR, M.; IZADPANAHA, K.; Galetto, L.; SALEHIC, M. & MARZACHI´ C. - Plant Pathology, 62:452-459
  • 2013 - A Stage-Structured Model of Scaphoideus titanus in Vineyards - Maggi F., Marzachì C., Bosco D. - Environmental Entomology, 42:181-193
  • 2012 - Preparation of phytoplasma membrane recombinant proteins - Galetto, L., Siampour, M. & Marzachì, C. - Methods in molecular biology, 351-370
  • 2012 - Molecular characterization, phylogenetic comparison and serological relationship of the Imp protein of several ‘Candidatus Phytoplasma aurantifolia’ strains - Siampour, M., Izadpanah, K., Galetto, L., Salehic, M. & Marzachì, C. - Plant pathology, 452–459
  • 2011 - Presenza Di Tomato Spotted Wilt Virus E ‘candidatus Phytoplasma Asteris’ Su Piante Di Gerbera In Puglia - Spanò R.1, Marzachì C., Mascia T., De Lucia B.1, Bubici G.1, Torchetti E.m., Rubino L., Gallitelli D. - Protezione Delle Colture , volume 4 pag. 79-83
  • 2011 - Flavescenza Dorata In Cv Barbera E Nebbiolo: Incidenza, Risanamento E Suscettibilità Al Patogeno - Bosco D.1, Marzachì C. - Protezione Delle Colture , volume pag. 21-23
  • 2009 - Variation In Vector Competency Depends On Chrysanthemum Yellows Phytoplasma Distribution Within Euscelidius Variegatus. - L. Galetto1, , M. Nardi2, , .p. Saracco2, , A. Bressan3, , C. Marzachì1, & D. Bosco2 - Entomologia Experimentalis Et Applicata (35508J0), volume 131 pag. 200-207
  • 2007 - Preliminary Results On The Evaluation Of The Effects Of Elicitors Of Plant Resistance On Chrysanthemum Yellows (cy) Phyto-plasma Infection - D'amelio, R., (1)massa, N., Gamalero,e., D'agostino, G., Sampo, S. (1)berta, G., Faoro, F., (2) Iriti, M., (3)Bosco,d., Marzachì, C. - Bulletin Of Insectology (00028NN), volume 60(2) pag. 317-318
  • 2007 - Production Of Polyclonal And Monoclonal Antibodies Specific Against Membrane Proteins Of “candidatus Phytoplasma Asteris”, Chrysanthemum Yellows Isolate (cy)) - Galetto, L., (1) Bosco, D., (2) Fletcher, J., Marzachì, C. - Bulletin Of Insectology (00028NN), volume 60(2) pag. 211-212
  • 2007 - Detection Of Flavescence Dorée Phytoplasma In Grapevine By Reverse-transcription Pcr - Margaria, P., (1)rosa, C., Marzachì, C., Turina, M., Palmano, S. - Plant Disease (01997J0), volume 91 pag. 1496-1501
  • 2005 - Relative Quantification Of Chrysanthemum Yellows (16sr-i) Phytoplasma In Its Plant And Insect Host Using Real-time Polymerase Chain Reaction. - Marzachì C., Bosco D.. - Molecular Biotechnology (11255J0), volume 30 pag. 117-127
  • 2004 - Phytoplasma-plant-vector Relationships - Marzachì, C., Milne, R.g., Bosco, D. - In Recent Research Development In Plant Pathology , Publisher: S.G. Pandalai and A. Gayathri
  • 2004 - Diagnosi Di Flavescenza Dorata: Sintomi Ed Analisi Molecolare - Morone, C., D’aquilio, M., Veratti, F., Marzachì C.. - Informatore Fitopatologico , volume 54 pag. 20-24
  • 2004 - Molecular Diagnosis Of Phytoplasmas. - Marzachi, C. - Phytopathologia Mediterranea (00121NN), volume 43 pag. 228-231
  • 2003 - A Comparison Of Molecular Diagnostic Procedures For The Detection Of Aster Yellow Phytoplasmas (16sr-i) In Leafhopper Vectors. - Bertin S., Palermo S., Marzachì C., Bosco D. - Phytoparasitica (77140J0), volume 32 pag. 141-145
  • 2003 - Properties Of Cucumber Bulgarian Latent Virus, A New Species In The Genus Tombusvirus. - Kostova A., Lisa V., Rubino L., Marzachì C., Roggero P. Russo M. - Journal Of Plant Pathology (00077NN), volume 85 pag. 27-33
  • 2002 - Molecular Identification Of Phytoplasmas From Dill (anethum Graveolens L.; Umbelliferae). - Boccardo G., Boarino A., Bozzano G., Marzachì C. - Journal Plant Pathology , Publisher: 84
  • 2002 - Armonizzazione Dei Protocolli Di Diagnosi Molecolare Per Il Rilevamento Dei Virus, Dei Viroidi E Dei Fitoplasmi Soggetti A Norme Fitosanitarie. - Bianco P., Faggioli F., Marzachì C. - Informatore Fitopatologico , Publisher: 52
  • 2002 - Diagnosi Molecolare Delle Malattie Da Fitoplasmi Della Vite. - Marzachì C. - Informatore Fitopatologico , Publisher: 52
  • - Effects of two AM fungi on phytoplasma infection in the model plant Chrysanthemum carinatum - Sampo, S.; Massa, N. ; Cantamessa, S. ; D'Agostino, U.; Bosco, D.; Marzachì, C. & Berta, G. - Agricultural and food science,