This study analyses the bacterial population dynamics of a mixed microbial community (MMC) selected in a pilot plant producing polyhydroxyalkanoate (PHA) from the fermentation of the organic fraction of urban waste (OFMSW) and sewage sludge (SS). 16S rRNA gene high-throughput sequencing revealed the occurrence of a variety of PHA accumulating bacteria that ensured a stable PHA production in an open system operating with real substrates and without temperature control. The Volatile Fatty Acids (VFA) changes in the feed and the temperature variation affected the dynamics of the PHA-accumulating bacteria over the plant operation. Remarkably, the higher PHA content was associated to a MMC largely comprising of Hydrogenophaga species during the operation at higher working temperature. The involvement of a heterogeneous PHA-accumulating MMC was associated with a high phaC synthase genes biodiversity confirming the occurrence of a functional redundancy. © 2019

Microbiome dynamics and phaC synthase genes selected in a pilot plant producing polyhydroxyalkanoate from the organic fraction of urban waste / Crognale, Simona; Tonanzi, Barbara; Valentino, Francesco; Majone, Mauro; Rossetti, Simona. - In: SCIENCE OF THE TOTAL ENVIRONMENT. - ISSN 0048-9697. - 689:(2019), pp. 765-773. [10.1016/j.scitotenv.2019.06.491]

Microbiome dynamics and phaC synthase genes selected in a pilot plant producing polyhydroxyalkanoate from the organic fraction of urban waste

Tonanzi, Barbara;Valentino, Francesco;Majone, Mauro;Rossetti, Simona
2019

Abstract

This study analyses the bacterial population dynamics of a mixed microbial community (MMC) selected in a pilot plant producing polyhydroxyalkanoate (PHA) from the fermentation of the organic fraction of urban waste (OFMSW) and sewage sludge (SS). 16S rRNA gene high-throughput sequencing revealed the occurrence of a variety of PHA accumulating bacteria that ensured a stable PHA production in an open system operating with real substrates and without temperature control. The Volatile Fatty Acids (VFA) changes in the feed and the temperature variation affected the dynamics of the PHA-accumulating bacteria over the plant operation. Remarkably, the higher PHA content was associated to a MMC largely comprising of Hydrogenophaga species during the operation at higher working temperature. The involvement of a heterogeneous PHA-accumulating MMC was associated with a high phaC synthase genes biodiversity confirming the occurrence of a functional redundancy. © 2019
2019
16S rRNA gene high-throughput sequencing; Mixed microbial culture (MMC); Organic Fraction of Municipal Solid Waste (OFMSW); phaC synthase genes; Polyhydroxyalkanoates (PHA); Sewage sludge (SS)
01 Pubblicazione su rivista::01a Articolo in rivista
Microbiome dynamics and phaC synthase genes selected in a pilot plant producing polyhydroxyalkanoate from the organic fraction of urban waste / Crognale, Simona; Tonanzi, Barbara; Valentino, Francesco; Majone, Mauro; Rossetti, Simona. - In: SCIENCE OF THE TOTAL ENVIRONMENT. - ISSN 0048-9697. - 689:(2019), pp. 765-773. [10.1016/j.scitotenv.2019.06.491]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1297227
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