PMID: 18186339Jan 12, 2008Paper

Microbially derived inputs to soil organic matter: are current estimates too low?

Environmental Science & Technology
Andre J SimpsonBrian Kelleher

Abstract

Soil microbes are central to many soil processes, but due to the structural complexity of soil organic matter, the accurate quantification of microbial biomass contributions continues to pose a significant analytical challenge. In this study, microbes from a range of soils were cultured such that their molecular profile could be compared to that of soil organic matter and native vegetation. With the use of modern NMR spectroscopy, the contributions from microbial species can be discerned in soil organic matter and quantified. On the basis of these studies, the contributions of microbial biomass to soil organic matter appear to be much higher than the 1-5% reported by other researchers. In some soils, microbial biomass was found to contribute >50% of the extractable soil organic matter fractions and approximately 45% of the humin fraction and accounted for >80% of the soil nitrogen. These findings are significant because organic matter is intimately linked to nutrient release and transport in soils, nitrogen turnover rates, contaminant fate, soil quality, and fertility. Therefore, if in some cases soil organic matter and soil organic nitrogen are predominately of microbial origin, it is likely that this fraction, whether in the ...Continue Reading

References

Jul 18, 2000·Journal of Agricultural and Food Chemistry·S K ParkL Were
Jun 6, 2002·Die Naturwissenschaften·André J SimpsonMartin Hofmann
Nov 14, 2002·Journal of Agricultural and Food Chemistry·Rod A HermanW Ross Halliday
Feb 5, 2003·Environmental Science & Technology·André J SimpsonPatrick G Hatcher
Oct 22, 2003·Phytochemistry·Ashish P DeshmukhPatrick G Hatcher
Jun 12, 2004·Science·I M Young, J W Crawford
Jul 28, 2004·Die Naturwissenschaften·Myrna J Simpson, Patrick G Hatcher
Dec 31, 2005·Environmental Science & Technology·Rebecca Sutton, Garrison Sposito
Aug 18, 2006·Environmental Science & Technology·Brian P Kelleher, Andre J Simpson
Mar 3, 2007·Environmental Science & Technology·Andre J SimpsonMichael H B Hayes

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Citations

May 3, 2012·Journal of Chemical Ecology·Myrna J Simpson, André J Simpson
Aug 23, 2012·Environmental Science & Technology·Andre J SimpsonRonald Soong
Sep 6, 2012·Environmental Science & Technology·James G LongstaffeAndré J Simpson
Apr 25, 2013·Environmental Science & Technology·Kris M HartBrian P Kelleher
Aug 24, 2013·Ecological Applications : a Publication of the Ecological Society of America·Timothy J FaheyPatrick J Bohlen
Jan 20, 2016·Environmental Science & Technology·Hussain MasoomAndre J Simpson
May 20, 2014·Ecological Applications : a Publication of the Ecological Society of America·M D McDanielA S Grandy
Nov 19, 2015·Environmental Science & Technology·Hussain MasoomAndre J Simpson
Aug 14, 2009·Ecology Letters·Noah FiererCory C Cleveland
May 5, 2012·Rapid Communications in Mass Spectrometry : RCM·Pierre-Joseph HattonDelphine Derrien
Aug 18, 2012·Ecology Letters·Heather M ThrockmortonWilliam R Horwath
Apr 1, 2015·Nature Communications·Oliver J LechtenfeldRonald Benner
Aug 7, 2012·Chemosphere·James G LongstaffeAndré J Simpson
Feb 13, 2016·Scientific Reports·Zhi QuanYunting Fang
May 15, 2015·Microbiology and Molecular Biology Reviews : MMBR·Kathleen K Treseder, Jay T Lennon
Jan 18, 2018·Scientific Reports·Patrick N ReardonNancy M Washton
Feb 24, 2015·Nature Communications·S J GoldbergL I Aluwihare
Nov 29, 2012·Nature Communications·Chao Liang, Teri C Balser
Apr 8, 2015·Nature Communications·Markus LangeGerd Gleixner
Aug 1, 2019·Global Change Biology·Chao LiangMatthias Kästner
Dec 21, 2019·Obesity·Faidon MagkosArne Astrup
Mar 19, 2011·Journal of Environmental Monitoring : JEM·Xiaojuan Feng, Myrna J Simpson
Aug 23, 2020·Environmental Microbiology·Ke-Qing XiaoYong-Guan Zhu

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