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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1016/j.plantsci.2017.06.006
|2 doi
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|a pubmed25n0912.xml
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|a (PII)S0168-9452(17)30122-X
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|a DE-627
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|e rakwb
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|a eng
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|a Fonseca, Márcia Bacelar
|e verfasserin
|4 aut
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|a Belowground microbes mitigate plant-plant competition
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 02.01.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2017 Elsevier B.V. All rights reserved.
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|a Dimorphandra wilsonii, a Cerrado endemic Fabaceae tree, is threatened by land-use changes. The few remaining individuals occur in areas dominated by alien grasses like Urochloa decumbens. We tested the impact of nitrogen (N) availability and symbionts' presence on mitigating the effects of competition from U. decumbens. Dimorphandra wilsonii seedlings were 50-week pot-cultivated under limiting (3mM) or non-limiting (10mM) N, with or without U. decumbens, and inoculated or not with a N-fixer (Bradyrhizobium sp.) and an arbuscular mycorrhizal fungus (AMF - Glomus etunicatum), both forming symbioses in the field. Since D. wilsonii seedlings grew more and 'lost' fewer nutrients under the symbionts' presence, symbionts mitigated plant-plant competition. Under limiting N, inoculated D. wilsonii seedlings grew more (despite no nodulation), but N fixation was only suggested when inoculated D. wilsonii seedlings competed with U. decumbens. D. wilsonii13C, and substrate's carbon and respiration suggest that only the microbes performing key functions received plant carbon. Under non-limiting N, inoculated D. wilsonii seedlings became enriched in 13C, substrate accumulated carbon and microbial respiration increased, suggesting a more generalist microbial community. Data suggest inoculating D. wilsonii seeds/seedlings with AMF and N-fixers as a conservation measure. However, long-term field-studies need to confirm these conclusions
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|a Journal Article
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|a Arbuscular mycorrhizal fungi
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|a Bradyrhizobium sp.
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|a Dimorphandra wilsonii
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|a Nitrogen
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|a Plan-plant competition
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|a Urochloa decumbens
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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|a Dias, Teresa
|e verfasserin
|4 aut
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|a Carolino, Maria Manuela
|e verfasserin
|4 aut
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|a França, Marcel Giovanni Costa
|e verfasserin
|4 aut
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| 700 |
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|a Cruz, Cristina
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant science : an international journal of experimental plant biology
|d 1985
|g 262(2017) vom: 07. Sept., Seite 175-181
|w (DE-627)NLM098174193
|x 1873-2259
|7 nnas
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|g volume:262
|g year:2017
|g day:07
|g month:09
|g pages:175-181
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|u http://dx.doi.org/10.1016/j.plantsci.2017.06.006
|3 Volltext
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