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dc.contributor.author
Teste, Francois
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dc.contributor.author
Laliberté, Etienne
dc.contributor.author
Lambers, Hans
dc.contributor.author
Auer, Yasha
dc.contributor.author
Kramer, Susanne
dc.contributor.author
Kandeler, Ellen
dc.date.available
2020-09-23T14:18:42Z
dc.date.issued
2016-01
dc.identifier.citation
Teste, Francois; Laliberté, Etienne; Lambers, Hans; Auer, Yasha; Kramer, Susanne; et al.; Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression; Pergamon-Elsevier Science Ltd; Soil Biology And Biochemistry; 92; 1-2016; 119-132
dc.identifier.issn
0038-0717
dc.identifier.uri
http://hdl.handle.net/11336/114611
dc.description.abstract
Mycorrhizal fungi enhance plant phosphorus (P) acquisition via their extraradical hyphae (ERH) that scavenge nutrients outside root depletion zones. While soil P availability declines during ecosystem retrogression, how ERH biomass and scavenging vary during ecosystem retrogression remains unknown; it is expected to increase if plants allocate more carbon (C) to mycorrhizal fungi as P availability declines. We measured fungal and bacterial biomass using in-growth cores and lipid biomarkers along a 2-million-year dune chronosequence in an Australian biodiversity hotspot showing a ~60-fold decline in total soil P concentration with increasing soil age. We compared the levels of key fungal biomarkers (ergosterol, NLFA 16:1ω5, and PLFA 18:2ω6,9) between closed, mesh, and open cores during five months (four sampling dates including the wet winter months), thus allowing us to also determine the dynamics of mycorrhizal fungal scavenging.We found strikingly low and declining biomass of ERH with declining P availability, with minimal long-distance scavenging by ERH. Biomass of ERH was highest in the younger (c. 1 ka) soils that were comparatively rich in P and other nutrients. By contrast, the oldest, most P impoverished soils had the lowest biomass of ERH, despite high mycorrhizal root colonisation, and high abundance and diversity of potential plant hosts. We show that extremely low P availability constrains ERH biomass. Such low mycorrhizal fungal biomass highlights the need for a more 'mycocentric' view of plant-mycorrhizal relationships in old, severely P-impoverished ecosystems.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARBUSCULAR MYCORRHIZAL
dc.subject
ECOSYSTEM DEVELOPMENT
dc.subject
ECTOMYCORRHIZAL
dc.subject
EXTRARADICAL HYPHAE
dc.subject
ERGOSTEROL
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NEUTRAL LIPID AND PHOSPHOLIPID FATTY ACID (NLFA, PLFA)
dc.subject.classification
Micología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-09-01T19:11:54Z
dc.journal.volume
92
dc.journal.pagination
119-132
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Teste, Francois. University of Western Australia; Australia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi"; Argentina
dc.description.fil
Fil: Laliberté, Etienne. University of Western Australia; Australia. University of Montreal; Canadá
dc.description.fil
Fil: Lambers, Hans. University of Western Australia; Australia
dc.description.fil
Fil: Auer, Yasha. University Of Hohenheim; Alemania
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Fil: Kramer, Susanne. University Of Hohenheim; Alemania
dc.description.fil
Fil: Kandeler, Ellen. University Of Hohenheim; Alemania
dc.journal.title
Soil Biology And Biochemistry
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0038071715003491?via%3Dihub
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.soilbio.2015.09.021
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