Universität zu Köln

Koller, Robert ORCID: 0000-0001-7251-7242, Scheu, Stefan, Bonkowski, Michael ORCID: 0000-0003-2656-1183 and Robin, Christophe (2013). Protozoa stimulate N uptake and growth of arbuscular mycorrhizal plants. Soil Biol. Biochem., 65. S. 204 - 211. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 0038-0717

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Abstract

Roots of most terrestrial plants interact with arbuscular mycorrhizal (AM) fungi and soil protozoa with each individually increasing nitrogen (N) supply to plants and plant growth. We investigated if AM fungi and protozoa interactively affect plant N acquisition and growth. We used stable isotopes (N-15, C-13) to assess plant N uptake, C fixation and C partitioning. Shifts in the microbial community structure were evaluated by analysing phospholipid fatty acids. Protozoa and AM fungi enhanced plant N uptake. Protozoa mobilized N from bacterial biomass and AM fungi increased the translocation of the mobilized N to the host plant; if both were present, plant biomass, C fixation and C allocation to roots increased twofold. Protozoa alone and in the presence of AM fungi altered microbial activity and community structure in the rhizosphere. The results indicate that plant N uptake via mycorrhizal symbiosis strongly benefits from the presence of protozoa. (C) 2013 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Koller, Robert UNSPECIFIED orcid.org/0000-0001-7251-7242 UNSPECIFIED Scheu, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED Bonkowski, Michael UNSPECIFIED orcid.org/0000-0003-2656-1183 UNSPECIFIED Robin, Christophe UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-475526
DOI:	10.1016/j.soilbio.2013.05.020
Journal or Publication Title:	Soil Biol. Biochem.
Volume:	65
Page Range:	S. 204 - 211
Date:	2013
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	0038-0717
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BACTERIAL COMMUNITY COMPOSITION; MICROBIAL BIOMASS; SOIL PROTOZOA; ACANTHAMOEBA-CASTELLANII; GLOMUS-INTRARADICES; CARBON FLOW; RHIZOSPHERE; FUNGI; NITROGEN; DECOMPOSITION Multiple languages Soil Science Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47552