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ARTICLE: CAN BACTERIA IN SOIL AND ON TREE LEAVES HELP TO CLEAN AIRBORNE ENVIRONMENTAL POLLUTANTS?

2017
Douwen, Yorben
Professionele bachelor in de agro- en biotechnologie

Abstract :
As air pollution has been linked to a numerous amount of health problems, research to improve air quality is necessary. Phytoremediation has already shown to be effective in cleaning air as plants are known to scavenge significant amounts of air pollutants on their aboveground plant parts. Despite the complexity in composition of air pollutants, phyllospheric bacteria are promising candidates to help plants to detoxify the pollutants by means of degradation. For this reason selected bacteria from highly polluted sites in Poland and Belgium were inoculated on common ivy (Hedera helix) in order to study the ability to degrade naphthalene and benzene. Cuvette systems were setup containing naphthalene and benzene in the air and concentration changes were measured using highly sensitive analytical mass spectrometry techniques. In addition, genome annotation of Pseudomonas yorbenii 4.1 and Pseudomonas veronii 4T1 was performed to evaluate their capabilities for aromatic pollutant degradation and plant growth promotion in the field of phytoremediation. Our results indicated that both strains have the genes (NdoA, NahB, XylE, CatA) to degrade different polycyclic aromatic hydrocarbons and can fully degrade naphthalene using the 1,2-dioxygenase pathway. Moreover, the results of the Proton-transfer-reaction mass spectrometry analyses confirmed this by an increased degradation of naphthalene in the cuvettes with ivy inoculated with a consortium of bacteria. This study confirmed that the isolated bacteria are able to degrade airborne environmental pollutants. Further research is needed using these data to improve phytoremediation of airborne pollutants and enhance the degradative activity of bacteria in polluted environments.

Keywords: phytoremediation, leaf microorganisms, ivy, naphthalene, benzene, airborne pollutants

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If you want to cite this thesis in your own thesis, paper, or report, use this format (APA):

Douwen, Y. (2017). ARTICLE: CAN BACTERIA IN SOIL AND ON TREE LEAVES HELP TO CLEAN AIRBORNE ENVIRONMENTAL POLLUTANTS?. Unpublished thesis, Hogeschool PXL, PXL-Tech.
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