Air-borne xylene degradation by Bougainvillea buttiana and the role of epiphytic bacteria in the degradation

Ecotoxicology and Environmental Safety
S SangthongP Thiravetyan

Abstract

The efficiency of xylene removal from contaminated air by thirteen perennial plants was studied. The results showed that Bougainvillea buttiana had the highest xylene removal efficiency. Different parts of B. buttiana such as stems, epicuticular waxes, and plant stomata (including microorganism-associated plant leaves) can uptake xylene 53.1±1.9%, 32.3±0.9, and 14.6±0.0%, respectively. Metabolite products found in treated plants may result from stress or defense compounds triggered by exposure to xylene. Moreover, possible degradation products in B. buttiana stems were analyzed after treatment with xylene at 100 ppm. Various metabolites in B. buttiana stems such as 2,6-dimethoxyphenol, 4-hydroxy-3,5-dimethoxy benzoic acid, 1-isopropyl-4-methylbenzene, p-tolualdehyde, 2,5-dimethoxy-4-methylbenzaldehyde, 2,4-dihydroxy-2,5-dimethyl-3(2H)-furanone, 3-methyl-2-butenal, dihydroxy acetone, propanedial, and many organic acids are related to the xylene degradation pathway. In addition, microorganism-associated B. buttiana leaves especially Enterobacter cloacae LSRC11, Staphylococcus sp. A1 and Pseudomonas aeruginosa enhanced the plant resulting in quicker xylene removal.

References

Aug 16, 2002·Current Opinion in Biotechnology·Steven E Lindow, Johan H J Leveau
Aug 12, 2003·Applied Microbiology and Biotechnology·L De KempeneerW Verstraete
Jan 31, 2006·Journal of Hazardous Materials·Dan WuShuo Chen
Jan 16, 2007·Environmental Microbiology·Amarjyoti SandhuGwyn A Beattie
Oct 24, 2008·Phytopathology·G A Beattie, S E Lindow
Sep 18, 2012·Chemosphere·Dânia Elisa Christofoletti MazzeoMaria Aparecida Marin-Morales

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Citations

Jul 24, 2018·Evidence-based Complementary and Alternative Medicine : ECAM·Rodolfo Abarca-Vargas, Vera L Petricevich
Mar 13, 2021·Environmental Pollution·Antonello PrigionieroCarmine Guarino
Nov 29, 2017··Prapai DhurakitDian Siswanto

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