Bionocula for phytotechnology: from lab to field

29.05.2020 14:15

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29.05.2020 14:15 Bionocula for phytotechnology: from lab to field Link: https:///pt/central-eventos/bionocula-phytotechnology-lab-field

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Universidade Católica Portuguesa - Porto

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Mining operations can release high levels of metals and metaloids to the environment, and negatively affect soils’ quality across entire landscapes. Phytotechnologies – the use of plants and associated organisms –  are an eco-friendly approach to restore soil functions and mitigate the spread of contaminants through the environmental compartments. Within this approach, the use of bioinocula, such as plant-growth rhizobacteria (PGPR) and arbuscular mycorrizal fungi (AMF), take a particularly relevant role in facilitating plants’ establishment and growth, as well as in the reduction of metal(loid)s availability in the soil. For the development of effective bioinocula, bench-scale studies with spiked and/or sterilized soil are typically undertaken prior to inoculation in field sites. However, working with pre-treated soils can be misleading,  as they often do not represent true field conditions and hence their applicability is not directly transferable. The effect of soil type and sterilization on PGPR performance under greenhouse conditions will be discussed to understand how laboratory-context bias may undercut its application in the field. The application of bioinocula to assist sunflower and poplar growth in a former mining site (Borralha mine, Montalegre), and the practical challenges faced in implementating field scale phytotechnology studies will also be addressed.