| Title | Effects of Apirolio Addition and Alfalfa and Compost Treatments on the Natural Microbial Community of a Historically PCB-Contaminated Soil |
| Abstract | Polychlorinated biphenyls (PCBs) are ubiquitous and persistent organic pollutants generated exclusively from human sources and found in the environment as several congeners (e.g. Apirolio, produced in Italy and used for electrical transformers). To evaluate the ability of the natural microbial community of historically PCB-contaminated soil to transform or degrade PCBs after fresh contamination through the addition of Apirolio, a microcosm experiment was conducted in a greenhouse for approximately 8 months. Compost and Medicago sativa (alfalfa) were additionally used in the microcosms to stimulate microbial PCB degradation. Chemical analyses were performed to evaluate PCB concentrations in the soil and plant tissue. Changes in the microbial community under the different experimental conditions were evaluated in terms of total abundance, viability, diversity, and activity. Interestingly, the addition of Apirolio did not negatively affect the
microbial community but did stimulate the degradation of the freshly added PCBs. The plant and compost copresence did not substantially increase PCB degradation, but it increased the microbial abundance and activity and the occurrence of ?-Proteobacteria and fungi. |
| Source | Water, air and soil pollution (Dordr., Online) 229 (143) |
| Keywords | ApirolioPCB congenersDehydrogenase activityFungiProteobacteria .Soil quality |
| Journal | Water, air and soil pollution (Dordr., Online) |
| Editor | Kluwer, Dordrecht, Paesi Bassi |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1007/s11270-018-3803-4 |
| Authors | Di Lenola M, Barra Caracciolo A , Grenni P, Rauseo J, Ancona V, Uricchio V F, Laudicina V A, Massacci A |
| Text | 386806 2018 10.1007/s11270 018 3803 4 Apirolio PCB congeners Dehydrogenase activity Fungi Proteobacteria . Soil quality Effects of Apirolio Addition and Alfalfa and Compost Treatments on the Natural Microbial Community of a Historically PCB Contaminated Soil Di Lenola M, Barra Caracciolo A , Grenni P, Rauseo J, Ancona V, Uricchio V F, Laudicina V A, Massacci A Istituto di Ricerca Sulle Acque Consiglio Nazionale delle Ricerche, CNR IRSA , Rome, Italy Istituto di Ricerca Sulle Acque Consiglio Nazionale delleRicerche, CNR IRSA , Bari, Italy Dipartimento Scienze Agrarie e Forestali, Universita degli Studi di Palermo, Palermo, Italy Istituto di Biologia Agroambientale e Forestale Consiglio Nazionale delle Ricerche, CNR IBAF , Rome, Italy Polychlorinated biphenyls PCBs are ubiquitous and persistent organic pollutants generated exclusively from human sources and found in the environment as several congeners e.g. Apirolio, produced in Italy and used for electrical transformers . To evaluate the ability of the natural microbial community of historically PCB contaminated soil to transform or degrade PCBs after fresh contamination through the addition of Apirolio, a microcosm experiment was conducted in a greenhouse for approximately 8 months. Compost and Medicago sativa alfalfa were additionally used in the microcosms to stimulate microbial PCB degradation. Chemical analyses were performed to evaluate PCB concentrations in the soil and plant tissue. Changes in the microbial community under the different experimental conditions were evaluated in terms of total abundance, viability, diversity, and activity. Interestingly, the addition of Apirolio did not negatively affect the microbial community but did stimulate the degradation of the freshly added PCBs. The plant and compost copresence did not substantially increase PCB degradation, but it increased the microbial abundance and activity and the occurrence of Proteobacteria and fungi. 229 Published version 15/04/2018 Articolo in rivista Kluwer 1573 2932 Water, air and soil pollution Dordr., Online Water, air and soil pollution Dordr., Online Water air soil pollut. Dordr., Online Water, air and soil pollution. Dordr., Online Water, air soil pollution Dordr., Online jasmin.rauseo RAUSEO JASMIN DI LENOLA MARTINA vitofelice.uricchio URICCHIO VITO FELICE anna.barracaracciolo BARRA CARACCIOLO ANNA paola.grenni GRENNI PAOLA valeria.ancona ANCONA VALERIA angelo.massacci MASSACCI ANGELO |
