Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression

Autores
Teste, Francois; Laliberté, Etienne; Lambers, Hans; Auer, Yasha; Kramer, Susanne; Kandeler, Ellen
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
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
Fil: Laliberté, Etienne. University of Western Australia; Australia. University of Montreal; Canadá
Fil: Lambers, Hans. University of Western Australia; Australia
Fil: Auer, Yasha. University Of Hohenheim; Alemania
Fil: Kramer, Susanne. University Of Hohenheim; Alemania
Fil: Kandeler, Ellen. University Of Hohenheim; Alemania
Materia
ARBUSCULAR MYCORRHIZAL
ECOSYSTEM DEVELOPMENT
ECTOMYCORRHIZAL
EXTRARADICAL HYPHAE
ERGOSTEROL
NEUTRAL LIPID AND PHOSPHOLIPID FATTY ACID (NLFA, PLFA)
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/114611

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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogressionTeste, FrancoisLaliberté, EtienneLambers, HansAuer, YashaKramer, SusanneKandeler, EllenARBUSCULAR MYCORRHIZALECOSYSTEM DEVELOPMENTECTOMYCORRHIZALEXTRARADICAL HYPHAEERGOSTEROLNEUTRAL LIPID AND PHOSPHOLIPID FATTY ACID (NLFA, PLFA)https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Mycorrhizal 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.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"; ArgentinaFil: Laliberté, Etienne. University of Western Australia; Australia. University of Montreal; CanadáFil: Lambers, Hans. University of Western Australia; AustraliaFil: Auer, Yasha. University Of Hohenheim; AlemaniaFil: Kramer, Susanne. University Of Hohenheim; AlemaniaFil: Kandeler, Ellen. University Of Hohenheim; AlemaniaPergamon-Elsevier Science Ltd2016-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/114611Teste, 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; 119-1320038-0717CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0038071715003491?via%3Dihubinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.soilbio.2015.09.021info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:48:38Zoai:ri.conicet.gov.ar:11336/114611instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:48:38.805CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression
title Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression
spellingShingle Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression
Teste, Francois
ARBUSCULAR MYCORRHIZAL
ECOSYSTEM DEVELOPMENT
ECTOMYCORRHIZAL
EXTRARADICAL HYPHAE
ERGOSTEROL
NEUTRAL LIPID AND PHOSPHOLIPID FATTY ACID (NLFA, PLFA)
title_short Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression
title_full Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression
title_fullStr Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression
title_full_unstemmed Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression
title_sort Mycorrhizal fungal biomass and scavenging declines in phosphorus-impoverished soils during ecosystem retrogression
dc.creator.none.fl_str_mv Teste, Francois
Laliberté, Etienne
Lambers, Hans
Auer, Yasha
Kramer, Susanne
Kandeler, Ellen
author Teste, Francois
author_facet Teste, Francois
Laliberté, Etienne
Lambers, Hans
Auer, Yasha
Kramer, Susanne
Kandeler, Ellen
author_role author
author2 Laliberté, Etienne
Lambers, Hans
Auer, Yasha
Kramer, Susanne
Kandeler, Ellen
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv ARBUSCULAR MYCORRHIZAL
ECOSYSTEM DEVELOPMENT
ECTOMYCORRHIZAL
EXTRARADICAL HYPHAE
ERGOSTEROL
NEUTRAL LIPID AND PHOSPHOLIPID FATTY ACID (NLFA, PLFA)
topic ARBUSCULAR MYCORRHIZAL
ECOSYSTEM DEVELOPMENT
ECTOMYCORRHIZAL
EXTRARADICAL HYPHAE
ERGOSTEROL
NEUTRAL LIPID AND PHOSPHOLIPID FATTY ACID (NLFA, PLFA)
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
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
Fil: Laliberté, Etienne. University of Western Australia; Australia. University of Montreal; Canadá
Fil: Lambers, Hans. University of Western Australia; Australia
Fil: Auer, Yasha. University Of Hohenheim; Alemania
Fil: Kramer, Susanne. University Of Hohenheim; Alemania
Fil: Kandeler, Ellen. University Of Hohenheim; Alemania
description 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.
publishDate 2016
dc.date.none.fl_str_mv 2016-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/114611
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
0038-0717
CONICET Digital
CONICET
url http://hdl.handle.net/11336/114611
identifier_str_mv 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
0038-0717
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0038071715003491?via%3Dihub
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.soilbio.2015.09.021
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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