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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/23254

Title: Diversity and hydrocarbon-degrading potential of epiphytic microbial communities on Platanus x acerifolia leaves in an urban area
Authors: Gandolfi, Isabella
Canedoli, Claudia
Imperato, Valeria
Tagliaferri, Ilario
Gkorezis, Panagiotis
Vangronsveld, Jaco
Schioppa, Emilio Padoa
Papacchini, Maddalena
Bestetti, Giuseppina
Franzetti, Andrea
Issue Date: 2017
Citation: ENVIRONMENTAL POLLUTION, 220, p. 650-658
Abstract: Plants and their associated bacteria have been suggested to play a role in air pollution mitigation, especially in urban areas. Particularly, epiphytic bacteria might be able to degrade atmospheric hydrocarbons. However, phyllospheric bacterial communities are highly variable depending on several factors, e.g. tree species, leaf age and physiology, environmental conditions. In this work, bacterial communities hosted by urban Platanus x acerifolia leaves were taxonomically characterized using high throughput sequencing of 16S rRNA gene, and their temporal and spatial variability was assessed by comparing samples collected from different locations in the city of Milan (Italy) and in different months. The diversity of alkane hydroxylase (alkB) phylotypes harboured by phyllospheric bacteria associated to urban Platanus trees was also evaluated. Results revealed that temporal changes, which are related to seasonality, acted as a stronger driver both on Platanus phyllospheric community structure and on alkB phylotype diversity than sampling location. Biodiversity of bacterial communities decreased along the growing season, leading to a strong dominance by the genus Stenotrophomonas. On the contrary, diversity of hydrocarbon-degrading populations increased over the months, although it resulted lower than that reported for other habitats. It was therefore hypothesized that atmospheric hydrocarbons might play a key role in the selection of phyllospheric populations in urban areas. (C) 2016 Elsevier Ltd. All rights reserved.
Notes: [Gandolfi, Isabella; Canedoli, Claudia; Imperato, Valeria; Tagliaferri, Ilario; Schioppa, Emilio Padoa; Bestetti, Giuseppina; Franzetti, Andrea] Univ Milano Bicocca, Dept Earth & Environm Sci, Piazza Sci 1, I-20126 Milan, Italy. [Gkorezis, Panagiotis; Vangronsveld, Jaco] Hasselt Univ, Ctr Environm Sci, Hasselt, Belgium. [Papacchini, Maddalena] INAIL, Dipartimento Innovaz Tecnol & Sicurezza Impianti, Rome, Italy.
URI: http://hdl.handle.net/1942/23254
DOI: 10.1016/j.envpol.2016.10.022
ISI #: 000390736700071
ISSN: 0269-7491
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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