Resilience and recovery: the effect of triclosan exposure timing during development, on the structure and function of river biofilm communities

Aquatic Toxicology
John R LawrenceDarren R Korber

Abstract

Triclosan (TCS) is a ubiquitous antibacterial agent found in soaps, scrubs, and consumer products. There is limited information on hazardous effects of TCS in the environment. Here, rotating annular reactors were used to cultivate river biofilm communities exposed to 1.8 μg l(-1) TCS with the timing and duration of exposure and recovery during development varied. Two major treatment regimens were employed: (i) biofilm development for 2, 4 or 6 weeks prior to TCS exposure and (ii) exposure of biofilms to TCS for 2, 4 or 6 weeks followed by recovery. Biofilms not exposed to TCS were used as a reference condition. Communities cultivated without and then exposed to TCS all exhibited reductions in algal biomass and significant (p<0.05) reductions in cyanobacterial biomass. No significant effects were observed on bacterial biomass. CLSM imaging of biofilms at 8 weeks revealed unique endpoints in terms of community architecture. Community composition was altered by any exposure to TCS, as indicated by significant shifts in denaturing gradient gel electrophoresis fingerprints and exopolymer composition relative to the reference. Bacterial, algal and cyanobacterial components initially exposed to TCS were significantly different from th...Continue Reading

References

May 26, 1999·Archives of Environmental Contamination and Toxicology·N IvorraW Admiraal
May 11, 2002·Chemosphere·Margaretha Adolfsson-EriciJoachim Sturve
Sep 11, 2002·Environmental Toxicology and Chemistry·Kevin H ReinertLaura Judd
May 31, 2003·Environmental Science & Technology·Brittan A WilsonCynthia K Larive
Apr 12, 2005·Environmental Science & Technology·Rolf U Halden, Daniel H Paull
Jun 15, 2005·Annual Review of Biochemistry·Stephen W White Rock
Nov 25, 2005·Letters in Applied Microbiology·M Gomez EscaladaD Ochs
Jan 17, 2007·Analytical and Bioanalytical Chemistry·Sergi SabaterMechthild Schmitt-Jansen
Oct 1, 2008·Aquatic Toxicology·Stephanie FranzMechthild Schmitt-Jansen
Jan 5, 2010·Journal - American Water Works Association·Talia E Chalew, Rolf U Halden
Apr 14, 2010·The Science of the Total Environment·Sierra María Victoria, Nora Gómez
Jul 7, 2010·Environmental Microbiology·Edvard GlücksmanDavid Bass
Sep 8, 2010·Integrated Environmental Assessment and Management·Jennifer LyndallMarie Capdevielle
Apr 5, 2011·Journal of Applied Toxicology : JAT·Andrea B Dann, Alice Hontela
May 31, 2011·The Science of the Total Environment·L ProiaS Sabater
Apr 24, 2012·PloS One·Helen V LubarskyDavid M Paterson
Jun 29, 2012·The ISME Journal·Ashley ShadeKatherine D McMahon
Sep 17, 2013·Environmental Toxicology and Chemistry·Christopher T NietchDavid Walters
Oct 1, 1982·Microbial Ecology·T K Haack, G A McFeters

❮ Previous
Next ❯

Citations

May 31, 2016·The Science of the Total Environment·Chu-Long HuangChang-Ping Yu
Jul 28, 2016·Science·Alyson L Yee, Jack A Gilbert
Nov 29, 2017·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Lisa M Weatherly, Julie A Gosse
May 8, 2021·Ecotoxicology and Environmental Safety·Caroline DooseClaude Fortin
Jan 24, 2019·Environmental Science & Technology·Xiaying XinHarold Weger
Oct 30, 2021·Frontiers in Microbiology·Ning TangFengxiu Ouyang

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofilm & Infectious Disease

Biofilm formation is a key virulence factor for a wide range of microorganisms that cause chronic infections.Here is the latest research on biofilm and infectious diseases.

Biofilms

Biofilms are adherent bacterial communities embedded in a polymer matrix and can cause persistent human infections that are highly resistant to antibiotics. Discover the latest research on Biofilms here.

Bacterial Protein Structures (ASM)

Bacterial protein structures can expedite the development of novel antibiotics. Here is the latest research on bacterial proteins and the resolution of their structures.

Bacterial Protein Structures

Bacterial protein structures can expedite the development of novel antibiotics. Here is the latest research on bacterial proteins and the resolution of their structures.