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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1111/nph.12249
|2 doi
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|a pubmed24n0754.xml
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|a (NLM)23534902
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Koller, Robert
|e verfasserin
|4 aut
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| 245 |
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|a Protozoa enhance foraging efficiency of arbuscular mycorrhizal fungi for mineral nitrogen from organic matter in soil to the benefit of host plants
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 24.01.2014
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|a Date Revised 16.04.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2013 The Authors. New Phytologist © 2013 New Phytologist Trust.
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|a Dead organic matter (OM) is a major source of nitrogen (N) for plants. The majority of plants support N uptake by symbiosis with arbuscular mycorrhizal (AM) fungi. Mineralization of N is regulated by microfauna, in particular, protozoa grazing on bacteria. We hypothesized that AM fungi and protozoa interactively facilitate plant N nutrition from OM. In soil systems consisting of an OM patch and a root compartment, plant N uptake and consequences for plant carbon (C) allocation were investigated using stable isotopes. Protozoa mobilized N by consuming bacteria, and the mobilized N was translocated via AM fungi to the host plant. The presence of protozoa in both the OM and root compartment stimulated photosynthesis and the translocation of C from the host plant via AM fungi into the OM patch. This stimulated microbial activity in the OM patch, plant N uptake from OM and doubled plant growth. The results indicate that protozoa increase plant growth by both mobilization of N from OM and by protozoa-root interactions, resulting in increased C allocation to roots and into the rhizosphere, thereby increasing plant nutrient exploitation. Hence, mycorrhizal plants need to interact with protozoa to fully exploit N resources from OM
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Carbon Isotopes
|2 NLM
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|a Minerals
|2 NLM
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|a Nitrogen Isotopes
|2 NLM
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|a Carbon Dioxide
|2 NLM
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|a 142M471B3J
|2 NLM
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|a Carbon
|2 NLM
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|a 7440-44-0
|2 NLM
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 700 |
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|a Rodriguez, Alia
|e verfasserin
|4 aut
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|a Robin, Christophe
|e verfasserin
|4 aut
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| 700 |
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|a Scheu, Stefan
|e verfasserin
|4 aut
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|a Bonkowski, Michael
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 199(2013), 1 vom: 04. Juli, Seite 203-211
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:199
|g year:2013
|g number:1
|g day:04
|g month:07
|g pages:203-211
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|u http://dx.doi.org/10.1111/nph.12249
|3 Volltext
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|d 199
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|h 203-211
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