ItalyCountry of destination:
Recent frameworks in plant ecology illustrate the importance of soil microbes as key players to extend the plant functional repertoire under conventional and environmental stress conditions. The MicroDROP project aims at improving the knowledge about the synergistic interaction occurring between plant roots and Plant Growth Promoting Bacteria (PGPB) under water and saline stress conditions, with a special focus to decipher the roles of MAPKs. The project takes advantage of (i) Arabidopsis thaliana, a model system extensively used in plant-microbe interaction studies, (ii) PGPB strains, well characterized for their ability to induce resistance in planta to osmotic and saline stress and (iii) RNA-seq technology, an innovative genome wide technique applied to decipher transcriptome modifications in both plants and bacteria during their association under drought and saline challenge. Furthermore, the project is focused on the disclosure of the role played by the MAPKs signalling modules for the establishment of the synergistic interaction between bacteria and the plant under osmotic and saline stress conditions: i) the modulation of the early immune response by the sentinel module MPK3/4/6; ii) the involvement of well-known receptors and co-receptors in decoying the beneficial interaction established with PGPB; iii) the involvement of MPK6 in the remodeling of the root architecture triggered by PGP bacteria. Unveiling the mechanisms that govern the beneficial interaction between bacteria and plant roots under water and saline limitation will represent novel clues to increase crop productivity under suboptimal environmental conditions.
I obtained my master degree in Industrial Biotechnology in 2005 at the University of Bologna, Italy. In 2009 I obtained my PhD at the University of Milan, Italy, with a thesis about the functional role and dynamic localization of GAS proteins, a family of enzymes with glucanosiltransferase activity, in remodeling the yeast cell wall in S. cerevisiae. During my first post-doc at the University of Milan, Italy, I moved my interest to environmental microbiology and molecular ecology of extreme environments. From 2009 to 2015 I was involved in several projects dealing with the characterization of the plant growth promoting potential of beneficial microbes associated to crops cultivated under desert farming in supporting plant health under droughts stress. I worked with different plant models, including tomato, pepper, date palm and grapevine under greenhouse and field conditions. In March 2016 I obtained the AgreenSkills mobility grant and at the present I am post-doc at Institute of Plant Sciences Paris-Saclay, France. The aim of the project is to get insight about the molecular mechanism by which beneficial bacteria boost plant resistance to water and saline stresses.
Marasco, R, Rolli, E, Fusi, M, Michoud, G, Daffonchio, D, 2018. Grapevine rootstocks shape underground bacterial microbiome and networking but not potential functionality. Microbiome, 6, 3. Doi: 10.1186/s40168-017-0391-2.
De Zélicourt A, Synek L, Saad MM, Alzubaidy H, Jalal R, Xie Y, Andrés-Barrao C, Rolli E, Guerard F, Mariappan KG, Daur I, Colcombet J, Benhamed M, Depaepe T, Van Der Straeten D, Hirt H., 2018. Ethylene induced plant stress tolerance by Enterobacter sp. SA187 is mediated by 2-keto-4-methylthiobutyric acid production. PLoS Genetics. 14(3):e1007273. Doi: 10.1371/journal. pgen.1007273.
Rolli E., Marasco R., Saderi S., Corretto E., Mapelli F., Cherif A., Borin S., Valenti L., Sorlini C., Daffonchio D., 2017. Root-associated bacteria promote grapevine growth: from the laboratory to the field., Plant and soil. Doi:10.1007/s11104-016-3019-6.
Rolli E, Marasco R, Vigani G, Ettoumi B, Mapelli F, Deangelis ML, Gandolfi C, Casati E, Previtali F, Gerbino R, Pierotti Cei F, Borin S, Sorlini C, Zocchi G, Daffonchio D, 2015. Improved plant resistance to drought is promoted by the root-associated microbiome as a water stress-dependent trait. Environmental microbiology.17(2):316-31.
Marasco R, Rolli E, Ettoumi B, Vigani G, Mapelli F, Borin S, Abou-Hadid AF, El-Behairy UA, Sorlini C, Cherif A, Zocchi G, Daffonchio D., 2012. A drought resistancepromoting microbiome is selected by root system under desert farming. PLoS One. 7(10): e48479. Doi:10.1371/ journal.pone.0048479.