AgreenSkills session, year: 2nd session, 2014
Receiving laboratory: EGC Plants, Microbes and the Environment Versailles-Grignon, France
Country of origin : Spain
AGRISOM - Investigating the fate of organic compound classes in soil matrix: mineralization vs. preservation patterns in agricultural lands
Accumulation of organic matter in soil (SOM) improves its fertility and concomitantly limits greenhouse gas emissions. In agricultural lands, SOM is derived from plant litter and manure, but the patterns that underlie the storage of SOM instead of its degradation in response to land management are widely unknown. Plant-derived alkyl and aromatic compounds may play a pivotal role for ecosystem services, such as C storage and soil water holding capacity. The main goal of this project is to unveil how these compounds interact with soil matrix, clay fraction, and microbial community promoting their preservation. To reach this objective, soil samples will be collected from the SOERE ACBB site Lusignan, in which a C3 to C4 plants conversion (prairie to maize cropping) has been established. Physical fractions and aggregates of the soil will be obtained, successively biomarkers for plant and microbial-derived alkyl and aromatic compounds will be isolated from each soil fraction by cutting-edge isolation methods. These compound specific extractions will provide information on the origin and transformation processes affecting organic molecules as well as their residence times and contribution to SOM. Bulk samples, soil fractions, lignin complexes and biomarkers will be analysed by high-resolution techniques of spectrometry (NMR and MS). The δ13C signature will be analyzed for each sample to evidence where the fresh C4 SOM is being accumulated. Finally, the obtained data will be used to test and refine existing theories for molecular SOM dynamics, making possible the design and implementation of tailored policies for land management and enabling realistic predictions of SOM storage/degradation cycles worldwide in the framework of the “4 pour 1000 initiative”.
I graduated in Pharmaceutical Chemistry at University of Calabria (UNICAL) in Italy. In 2008 I started to collaborate with the Institute for National Resources and Agrobiology of Seville (IRNAS-CSIC) in Spain, where successively I obtained a PhD grant. My research has been focused on soil chemical and biochemical properties of agricultural soils. I carried out a work of comparison of different types of tillages and I analysed the differences that they could originate in the soil enzymatic activity levels, GHG emissions, and in the organic carbon cycles of storage/degradation.
I enjoy being involved in all the phases of the projects I participate, from the field experiments, to the lab analyses, and ending with the publication of the obtained data. I collaborated with other institutions in Germany and USA to achieve a molecular characterization of the soil organic matter using solid state NMR and mass spectrometry. Particularly, I focused my work on the importance of organo-mineral association for carbon storage in soil and I would like to enhance my research in this field, mainly unveiling the unknown mechanisms that provide the stabilization of soil organic matter.
Montiel-Rozas, M., Panettieri, M., Madejón, P., Madejón, E., 2015. Carbon Sequestration in Restored Soils by Applying Organic Amendments. Land Degradation and Development 27: 620–629. DOI:10.1002/ldr.2466.
Panettieri, M., Berns, A.E., Knicker, H.E., Murillo, J.M., and Madejón, E., 2015. Evaluation of seasonal variability of soil biogeochemical properties in aggregate-size fractioned soil under different tillages. Soil and Tillage Research 151 39–49. DOI:10.1016/j.still.2015.02.008
Panettieri, M., Knicker, H., Murillo, J.M., Madejón, E., and Hatcher, P.G., 2014. Soil organic matter degradation in an agricultural chronosequence under different tillage regimes evaluated by organic matter pools, enzymatic activities and CPMAS 13C NMR. Soil Biology & Biochemistry 78 170-181. DOI:10.1016/j.soilbio.2014.07.021
Panettieri, M., Knicker, H., Berns, A.E., Murillo, J.M. and Madejón, E., 2013. Moldboard plowing effects on soil aggregation and soil organic matter quality assessed by 13C CPMAS NMR and biochemical analyses. Agriculture Ecosystem and Environment 177, 48–57. DOI:10.1016/j.agee.2013.05.025
Melero, S., Panettieri, M., Madejón, E., Gómez-Macpherson, H., Moreno, F., Murillo, J.M., 2011. Implementation of chiselling and mouldboard ploughing in soil after 8 years of no-till management in SW, Spain: Effect on soil quality. Soil & Tillage Research 112, 107–113. DOI:10.1016/j.still.2010.12.001