Bacterial community structure in soil microaggregates and on particulate organic matter fractions located outside or inside soil macroaggregates

Blaud, Aimeric; Chevallier, Tiphaine; Virto, Iñigo; Pablo, Anne-Laure; Chenu, Claire; Brauman, Alain

Abstract

Soil aggregates and particulate organic matter (POM) are thought to represent distinct soil microhabitats for microbial communities. This study investigated whether organo-mineral (0–20, 20–50 and 50–200 μm) and POM (two sizes: >200 and 200 μm). The denaturing gradient gel electrophoresis (DGGE) profiles revealed that bacterial communities structure of organo-mineral soil fractions were significantly different in comparison to the unfractionated soil. Conversely, there were little differences in C concentrations, C:N ratios and no differences in DGGE profiles between organo-mineral fractions. Bacterial communities between soil fractions located inside or outside macroaggregates were not significantly different. However, the bacterial communities on POM fractions were significantly different in comparison to organo-mineral soil fractions and unfractionated soil, and also between the 2 sizes of POM. Thus in the studied soil, only POM fractions represented distinct microhabitats for bacterial community, which likely vary with the state of decomposition of the POM.

Citation

Blaud, A., Chevallier, T., Virto, I., Pablo, A., Chenu, C., & Brauman, A. (2014). Bacterial community structure in soil microaggregates and on particulate organic matter fractions located outside or inside soil macroaggregates. Pedobiologia, 57(3), 191-194. https://doi.org/10.1016/j.pedobi.2014.03.005

• Journal Article Type: Article
• Acceptance Date: Mar 14, 2014
• Online Publication Date: Mar 25, 2014
• Publication Date: 2014-05
• Deposit Date: Jul 16, 2019
• Publicly Available Date: Jul 17, 2019
• Journal: Pedobiologia
• Print ISSN: 0031-4056
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 57
• Issue: 3
• Pages: 191-194
• DOI: https://doi.org/10.1016/j.pedobi.2014.03.005
• Keywords: Soil Science; Ecology, Evolution, Behavior and Systematics
• Public URL: http://researchrepository.napier.ac.uk/Output/1348588
• Publisher URL: https://www.sciencedirect.com/science/article/abs/pii/S003140561400047X