Ectomycorrhizal utilization of different phosphorus sources in a glacier forefront in the Italian Alps
D’Amico, Michele ; Almeida, Juan Pablo LU ; Barbieri, Sonia LU ; Castelli, Fabio LU ; Sgura, Elena LU ; Sineo, Giulia LU ; Martin, Maria ; Bonifacio, Eleonora ; Wallander, Håkan LU
and Celi, Luisella
(2020)
In Plant and Soil
446(1-2).
p.81-95
- Abstract
Aims: In deglaciated surfaces, lithology influences habitat development. In particular, serpentinite inhibits soil evolution and plant colonization because of insufficient phosphorus (P) content, among other stressful properties. In nutrient-poor environments, ectomycorrhizal fungi (EMF) play a key role exploring the soil for P beyond the rhizosphere. In this study, we followed the role of EMF in accessing inorganic and organic P along two proglacial soil chronosequences in the Alps (NW Italy), respectively characterized by pure serpentinite till and serpentinite mixed with 10% of gneiss, and colonized by European Larch.
Methods: The access to inorganic and organic P forms by EMF was studied using specific mesh-bags for fungal... (More)
Aims: In deglaciated surfaces, lithology influences habitat development. In particular, serpentinite inhibits soil evolution and plant colonization because of insufficient phosphorus (P) content, among other stressful properties. In nutrient-poor environments, ectomycorrhizal fungi (EMF) play a key role exploring the soil for P beyond the rhizosphere. In this study, we followed the role of EMF in accessing inorganic and organic P along two proglacial soil chronosequences in the Alps (NW Italy), respectively characterized by pure serpentinite till and serpentinite mixed with 10% of gneiss, and colonized by European Larch.
Methods: The access to inorganic and organic P forms by EMF was studied using specific mesh-bags for fungal hyphae entry, filled with quartz sand and inorganic phosphate (Pi) or myo-inositolhexaphosphate (InsP6) adsorbed onto goethite. They were incubated over 13 months at the organic/mineral horizon interface. After harvesting, EMF colonization via ergosterol analysis and the amount of P and Fe removed from mesh bags were measured.
Results: Ergosterol increased along the two chronosequences with slightly greater values on serpentinite and in Pi-containing bags. Up to 65% of Pi was removed from mesh-bags, only partly accompanied by a parallel release of Fe. The amount of InsP6 released was instead less than 45% and mostly removed with goethite.
Conclusions: The results suggest that, in extremely P-poor environments, EMF are able to release both inorganic and organic P forms from highly stabilized associations.
(Less)
- author
- D’Amico, Michele
; Almeida, Juan Pablo
LU
; Barbieri, Sonia
LU
; Castelli, Fabio
LU
; Sgura, Elena
LU
; Sineo, Giulia
LU
; Martin, Maria
; Bonifacio, Eleonora
; Wallander, Håkan
LU
and Celi, Luisella
- organization
- publishing date
- 2020-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Ectomycorrhizae, Mesh bags experiment, Phosphorus uptake, Primary succession, Serpentinite soils, Soil chronosequence
- in
- Plant and Soil
- volume
- 446
- issue
- 1-2
- pages
- 15 pages
- publisher
- Springer
- external identifiers
-
- scopus:85075123299
- ISSN
- 0032-079X
- DOI
- 10.1007/s11104-019-04342-0
- language
- English
- LU publication?
- yes
- id
- 0cf52eab-d781-4bc5-9272-074526351909
- date added to LUP
- 2019-12-10 12:59:08
- date last changed
- 2024-05-02 00:52:29
@article{0cf52eab-d781-4bc5-9272-074526351909,
abstract = {{<p>Aims: In deglaciated surfaces, lithology influences habitat development. In particular, serpentinite inhibits soil evolution and plant colonization because of insufficient phosphorus (P) content, among other stressful properties. In nutrient-poor environments, ectomycorrhizal fungi (EMF) play a key role exploring the soil for P beyond the rhizosphere. In this study, we followed the role of EMF in accessing inorganic and organic P along two proglacial soil chronosequences in the Alps (NW Italy), respectively characterized by pure serpentinite till and serpentinite mixed with 10% of gneiss, and colonized by European Larch. </p><p>Methods: The access to inorganic and organic P forms by EMF was studied using specific mesh-bags for fungal hyphae entry, filled with quartz sand and inorganic phosphate (Pi) or myo-inositolhexaphosphate (InsP6) adsorbed onto goethite. They were incubated over 13 months at the organic/mineral horizon interface. After harvesting, EMF colonization via ergosterol analysis and the amount of P and Fe removed from mesh bags were measured. </p><p>Results: Ergosterol increased along the two chronosequences with slightly greater values on serpentinite and in Pi-containing bags. Up to 65% of Pi was removed from mesh-bags, only partly accompanied by a parallel release of Fe. The amount of InsP6 released was instead less than 45% and mostly removed with goethite. </p><p>Conclusions: The results suggest that, in extremely P-poor environments, EMF are able to release both inorganic and organic P forms from highly stabilized associations.</p>}},
author = {{D’Amico, Michele and Almeida, Juan Pablo and Barbieri, Sonia and Castelli, Fabio and Sgura, Elena and Sineo, Giulia and Martin, Maria and Bonifacio, Eleonora and Wallander, Håkan and Celi, Luisella}},
issn = {{0032-079X}},
keywords = {{Ectomycorrhizae; Mesh bags experiment; Phosphorus uptake; Primary succession; Serpentinite soils; Soil chronosequence}},
language = {{eng}},
number = {{1-2}},
pages = {{81--95}},
publisher = {{Springer}},
series = {{Plant and Soil}},
title = {{Ectomycorrhizal utilization of different phosphorus sources in a glacier forefront in the Italian Alps}},
url = {{http://dx.doi.org/10.1007/s11104-019-04342-0}},
doi = {{10.1007/s11104-019-04342-0}},
volume = {{446}},
year = {{2020}},
}