Abstract
Microbial biofilms in rivers contribute to the decomposition of the available organic matter which typically shows changes in composition and bioavailability due to their origin, seasonality, and watershed characteristics. In the context of global warming, enhanced biofilm organic matter decomposition would be expected but this effect could be specific when either a labile or a recalcitrant organic matter source would be available. A laboratory experiment was performed to mimic the effect of the predicted increase in river water temperature (+4 °C above an ambient temperature) on the microbial biofilm under differential organic matter sources. The biofilm microbial community responded to higher water temperature by increasing bacterial cell number, respiratory activity (electron transport system) and microbial extracellular enzymes (extracellular enzyme activity). At higher temperature, the phenol oxidase enzyme explained a large fraction of respiratory activity variation suggesting an enhanced microbial use of degradation products from humic substances. The decomposition of hemicellulose (β-xylosidase activity) seemed to be also favored by warmer conditions. However, at ambient temperature, the enzymes highly responsible for r...Continue Reading
References
Apr 29, 2000·Nature·C P Giardina, M G Ryan
Mar 29, 2002·Nature·Gian-Reto WaltherFranz Bairlein
Dec 19, 2003·Microbial Ecology·A M RomaníS Sabater
Jan 7, 2005·Nature·Changming FangJo U Smith
Jan 22, 2005·Nature·W KnorrE A Holland
Jan 6, 2006·Microbial Ecology·H M FreeseR Schumann
Mar 10, 2006·Nature·Eric A Davidson, Ivan A Janssens
Aug 10, 2006·Microbial Ecology·Anna M RomaníAndrea Butturini
Jun 2, 2007·Environmental Science & Technology·Nathalie FennerTim Sparks
May 21, 2009·FEMS Microbiology Ecology·Irene YllaSergi Sabater
May 23, 2009·Environmental Science and Pollution Research International·Petr PorcalPeter J Dillon
May 30, 2009·Environmental Science & Technology·Stuart W KrasnerGary Amy
Jul 24, 2010·Nature·Cristian GudaszLars J Tranvik
Sep 30, 2010·Microbial Ecology·Martin BerggrenMats Jansson
Nov 10, 2010·Ecology·Bertrand GuenetGérard Lacroix
Nov 30, 2010·Biofouling·Veronica Diaz VillanuevaAnna M Romani
Aug 19, 2011·PloS One·Hannes PeterLars J Tranvik
Sep 1, 1994·Microbial Ecology·J L Meyer
Nov 1, 1988·Microbial Ecology·L J Tranvik
Jan 1, 1987·Microbial Ecology·J L MeyerR Risley
Citations
Mar 11, 2016·Microbial Ecology·Yuki TsuchiyaHisao Morisaki
Jun 8, 2015·Environmental Science and Pollution Research International·Alessandra Emanuele ToniettoArmando Augusto Henriques Vieira
Mar 19, 2014·Microbial Ecology·Irene YllaAnna M Romaní
Feb 21, 2014·Environmental Microbiology·Anna M RomaníIrene Ylla
May 6, 2016·Environmental Science and Pollution Research International·Wei CaiChao Wang
Aug 16, 2016·FEMS Microbiology Ecology·Encarnación FenoyFrancisco J Moyano-López
May 10, 2017·Environmental Science & Technology·N PerujoA M Romaní
May 26, 2017·The Science of the Total Environment·Aingeru MartínezAitor Larrañaga
Sep 20, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Wei CaiChao Wang
Aug 19, 2018·Global Change Biology·Mandy VelthuisElisabeth S Bakker
May 30, 2020·Environmental Microbiology·Zaisheng YanHelong Jiang
Sep 20, 2019·Scientific Reports·G GionchettaJ Artigas
Feb 11, 2019·Microbial Ecology·Ada PastorTenna Riis
Apr 15, 2019·Environmental Science and Pollution Research International·Jie XieQitang Wu
Nov 5, 2019·Scientific Reports·Ferran RomeroSergi Sabater
Jul 19, 2020·Environmental Science and Pollution Research International·Peter McClean, William Ross Hunter
Oct 20, 2020·Frontiers in Microbiology·Lina AllessonDag O Hessen
Jan 6, 2021·Water Research·Hongfei LiuSha Xue
May 5, 2018·The Science of the Total Environment·Ding HeYongge Sun
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Natalia A Kulikova, Irina V Perminova