dc.identifier.uri |
http://dx.doi.org/10.15488/4844 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/4887 |
|
dc.contributor.author |
Andrino, Alberto
|
|
dc.contributor.author |
Boy, Jens
|
|
dc.contributor.author |
Mikutta, Robert
|
|
dc.contributor.author |
Sauheitl, Leopold
|
|
dc.contributor.author |
Guggenberger, Georg
|
|
dc.date.accessioned |
2019-05-21T11:52:23Z |
|
dc.date.available |
2019-05-21T11:52:23Z |
|
dc.date.issued |
2019 |
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dc.identifier.citation |
Andrino, A.; Boy, J.; Mikutta, R.; Sauheitl, L.; Guggenberger, G.: Carbon Investment Required for the Mobilization of Inorganic and Organic Phosphorus Bound to Goethite by an Arbuscular Mycorrhiza (Solanum lycopersicum x Rhizophagus irregularis). In: Frontiers in Environmental Science 7 (2019), 26. DOI: https://doi.org/10.3389/fenvs.2019.00026 |
|
dc.description.abstract |
Nutrient supply in phosphorus (P)-limited ecosystems, with most P being associated with secondary minerals, has to rely on efficient nutrient allocation strategies, such as those involving mycorrhizal symbioses. Yet, little is known about the extent of photo-assimilate transfer to the fungal partner, who in turn mobilizes mineral-bound P sources required by the plant. This study aims to explore the carbon (C)–P trade between an arbuscular mycorrhizal (AM) plant and its ability to incorporate P from differently accessible P sources. We compared P uptake rates of AM plants for orthophosphate (OP) and phytic acid (PA), applied to mesocosms in either dissolved form or bound to goethite (α-FeOOH). The design of the mesocosms allowed the plant to only access the P in the fungal compartment via the AM hyphae. We hypothesized the AM plant to invest more C into the symbiosis, if P is present in the less accessible form. To estimate the C budget of the symbiosis, we determined total organic carbon (OC), 16:1ω5c phospholipid fatty acid (PLFA; AM fungi extraradical mycelium), 16:1ω5c neutral lipid fatty acid (NLFA; AM fungi energy storage), and CO2 cumulative respiration in the fungal compartment. A ratio to the total C translocated into the fungal compartment (OC+CO2-C cumulative respiration) and the P incorporated into the AM plant (Total C/P) was calculated to estimate the C investment made by the AM plant into its symbiotic partner. AM plants incorporated P derived from all four P sources exclusively via the mycorrhizal pathway in different amounts and kinetics. The Total C/P ratio was significantly larger for those AM plants accessing the goethite-bound P compounds. They also transferred significantly larger amounts of PLFA and NLFA to their fungal partner, both indicating a larger plant C investment per P taken up. Our data provide first evidence about the ability of an AM plant to incorporate P from an organic source bound to a secondary mineral. The different C investments of AM plants into P allocation from variably available sources suggests a broad nexus between P mining strategies, resource partitioning in soil, and the amounts of C accumulated in terrestrial soils |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Lausanne : Frontiers Media |
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dc.relation.ispartofseries |
Frontiers in Environmental Science 7 (2019), Nr. 26 |
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dc.rights |
CC BY 4.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
|
dc.subject |
Goethite |
eng |
dc.subject |
organic phosphorus |
eng |
dc.subject |
inorganic phosphorus |
eng |
dc.subject |
arbuscular mycorrhiza |
eng |
dc.subject |
carbon-phosphorus trading |
eng |
dc.subject |
PLFA 16:1&5c |
eng |
dc.subject |
NLFA 16:1&5c |
eng |
dc.subject.ddc |
333 | Boden- und Energiewirtschaft
|
ger |
dc.subject.ddc |
570 | Biowissenschaften, Biologie
|
ger |
dc.title |
Carbon Investment Required for the Mobilization of Inorganic and Organic Phosphorus Bound to Goethite by an Arbuscular Mycorrhiza (Solanum lycopersicum x Rhizophagus irregularis) |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
2296-665X |
|
dc.relation.doi |
https://doi.org/10.3389/fenvs.2019.00026 |
|
dc.bibliographicCitation.issue |
26 |
|
dc.bibliographicCitation.volume |
7 |
|
dc.bibliographicCitation.firstPage |
26 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|