| Title | Assessment of Sunflower Capability in Restoring Soil Contaminated by PCBs and HMs in Microcosm Experiments |
| Abstract | Plant-assisted bioremediation (PABR) is a strategy based on interactions between plants and microorganisms in the rhizosphere, which promotes a reduction in soil contaminants. In fact, the plant root system can stimulate microbial activity in the rhizosphere favoring decontamination processes (biodegradation of organic xenobiotics and removal/transformation of the inorganic ones). In the last few years, several laboratory, greenhouse, and field studies were carried out to assess the effectiveness of PABR technology in recovering multi-contaminated soils. At laboratory scale, microcosm experiments allow studying natural soil microbial populations under controlled environmental conditions (e.g., temperature, light, humidity, and so on). Recently, sunflower has been proposed for plant-assisted bioremediation purposes. This plant species was demonstrated to be able to absorb various heavy metals (e.g., Zn, Cu, Pb, etc) through its root system. Moreover, sunflower effectiveness in degradation of Persistent Organic Pollutants (e.g., DDT, endosulfan, different chlorinated compounds, and polychlorinated biphenyl-PCBs) was verified recently. In this work, a sunflower microcosm experiment was carried out for 3 months to assess sunflower capability in restoring soil historically contaminated by PCBs and heavy metals (HM). The soil was collected from a survey site located close to Taranto city (Southern Italy). Four different experimental conditions (presence/absence of compost and/or plant) have been set up. Chemical analyses of soil properties (e.g., pH, EC, OC, available phosphorous) and pollutants (PCBs and HMs) were performed at two sampling times (45, 90 days). Moreover, microbial abundance, dehydrogenase activity, and qPCR assays were performed for evaluating the autochthonous microbial community composition, structure, and functioning. Finally, a root exudates screening was carried out on planted pots in order to investigate the potential microbial-plant interactions occurring in sunflower-assisted bioremediation microcosm experiments. |
| Source | "TOWARDS A REDUCED POLLUTION SOCIETY", Copenaghen, 15-19/05/2022 |
| Keywords | sunflower |
| Year | 2022 |
| Type | Abstract in atti di convegno |
| Authors | Valeria Ancona 1 , Ida Rascio1, Giorgia Aimola1, Paola Grenni2, Gian Luigi Garbini 2, Daniela Napolitano 3 Alessio Lacirignola3, Vito Locaputo1, Angela Gatto1, Marina Tumolo 1,4 , Daniela Losacco1,4 and Anna Barra Caracciolo2 |
| Text | 468565 2022 sunflower Assessment of Sunflower Capability in Restoring Soil Contaminated by PCBs and HMs in Microcosm Experiments Valeria Ancona 1 , Ida Rascio1, Giorgia Aimola1, Paola Grenni2, Gian Luigi Garbini 2, Daniela Napolitano 3 Alessio Lacirignola3, Vito Locaputo1, Angela Gatto1, Marina Tumolo 1,4 , Daniela Losacco1,4 and Anna Barra Caracciolo2 1 Water Research Institute Italian National Research Council, Italy, Bari 2 Water Research Institute Italian National Research Council, Italy, Rome 3 CISA SpA, Italy, Massafra 4 DISSPA, University of Bari, Italy Abstract Book SETAC Europe 322309 8031nd Annual Meeting Society of Environmental Toxicology and Chemistry Europe SETAC Europe Published version TOWARDS A REDUCED POLLUTION SOCIETY Copenaghen 15 19/05/2022 Internazionale Contributo Plant assisted bioremediation PABR is a strategy based on interactions between plants and microorganisms in the rhizosphere, which promotes a reduction in soil contaminants. In fact, the plant root system can stimulate microbial activity in the rhizosphere favoring decontamination processes biodegradation of organic xenobiotics and removal/transformation of the inorganic ones . In the last few years, several laboratory, greenhouse, and field studies were carried out to assess the effectiveness of PABR technology in recovering multi contaminated soils. At laboratory scale, microcosm experiments allow studying natural soil microbial populations under controlled environmental conditions e.g., temperature, light, humidity, and so on . Recently, sunflower has been proposed for plant assisted bioremediation purposes. This plant species was demonstrated to be able to absorb various heavy metals e.g., Zn, Cu, Pb, etc through its root system. Moreover, sunflower effectiveness in degradation of Persistent Organic Pollutants e.g., DDT, endosulfan, different chlorinated compounds, and polychlorinated biphenyl PCBs was verified recently. In this work, a sunflower microcosm experiment was carried out for 3 months to assess sunflower capability in restoring soil historically contaminated by PCBs and heavy metals HM . The soil was collected from a survey site located close to Taranto city Southern Italy . Four different experimental conditions presence/absence of compost and/or plant have been set up. Chemical analyses of soil properties e.g., pH, EC, OC, available phosphorous and pollutants PCBs and HMs were performed at two sampling times 45, 90 days . Moreover, microbial abundance, dehydrogenase activity, and qPCR assays were performed for evaluating the autochthonous microbial community composition, structure, and functioning. Finally, a root exudates screening was carried out on planted pots in order to investigate the potential microbial plant interactions occurring in sunflower assisted bioremediation microcosm experiments. Abstract in atti di convegno SETAC Europe Office 2309 8031 Abstracts book SETAC Europe Annual Meeting Abstracts book SETAC Europe Annual Meeting Abstracts book Abstr.book SETAC Eur. Annu. Meet. marinatumolo TUMOLO MARINA danielalosacco LOSACCO DANIELA RASCIO IDA GARBINI GIAN LUIGI giorgiaaimola AIMOLA GIORGIA angela.gatto GATTO ANGELA vito.locaputo LOCAPUTO VITO anna.barracaracciolo BARRA CARACCIOLO ANNA paola.grenni GRENNI PAOLA valeria.ancona ANCONA VALERIA |
