Heterogeneity in mycorrhizal inoculum potential of flood-deposited sediments

Mary J. Harner; Jeff S. Piotrowski; Ylva Lekberg; Jack A. Stanford; Matthias C. Rillig

doi:10.1007/s00027-009-9198-y

Heterogeneity in mycorrhizal inoculum potential of flood-deposited sediments

Mary J. Harner, Jeff S. Piotrowski, Ylva Lekberg, Jack A. Stanford, Matthias C. Rillig

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Riparian areas are diverse systems where flooding creates new sites for establishment of vegetation. Symbioses with soil microorganisms, such as mycorrhizal fungi, affect vascular plant growth and community composition. It is unknown, however, how mycorrhizal fungi are dispersed along rivers and what potential they have to inoculate roots of plants establishing on recently deposited sedimentary surfaces of flood plains.We measured AMF inocula in sediment deposited by an average spring flood along an expansive riverine flood plain in Montana, USA, to determine whether AMF inocula were present in sediments and what types of propagules (spores, hyphae, or colonized root fragments) contribute to AMFinfectivity. Flood-deposited sediments contained sufficient inocula for AMF to colonize host plants (Sorghum sudanense) grown in a greenhouse, and both AMF hyphal lengths and spore densities were correlated with infectivity. Availability of mycorrhizal inocula, which is patchily distributed in this system,may lead to microsites that differ in ability to support establishment and growth of early-successional plants.

Original language	English (US)
Pages (from-to)	331-337
Number of pages	7
Journal	Aquatic Sciences
Volume	71
Issue number	3
DOIs	https://doi.org/10.1007/s00027-009-9198-y
State	Published - Oct 2009
Externally published	Yes

Keywords

Arbuscular mycorrhiza
Flood
Mycorrhizal inoculum potential
River

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Aquatic Science
Ecology
Water Science and Technology

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10.1007/s00027-009-9198-y

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title = "Heterogeneity in mycorrhizal inoculum potential of flood-deposited sediments",

abstract = "Riparian areas are diverse systems where flooding creates new sites for establishment of vegetation. Symbioses with soil microorganisms, such as mycorrhizal fungi, affect vascular plant growth and community composition. It is unknown, however, how mycorrhizal fungi are dispersed along rivers and what potential they have to inoculate roots of plants establishing on recently deposited sedimentary surfaces of flood plains.We measured AMF inocula in sediment deposited by an average spring flood along an expansive riverine flood plain in Montana, USA, to determine whether AMF inocula were present in sediments and what types of propagules (spores, hyphae, or colonized root fragments) contribute to AMFinfectivity. Flood-deposited sediments contained sufficient inocula for AMF to colonize host plants (Sorghum sudanense) grown in a greenhouse, and both AMF hyphal lengths and spore densities were correlated with infectivity. Availability of mycorrhizal inocula, which is patchily distributed in this system,may lead to microsites that differ in ability to support establishment and growth of early-successional plants.",

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author = "Harner, {Mary J.} and Piotrowski, {Jeff S.} and Ylva Lekberg and Stanford, {Jack A.} and Rillig, {Matthias C.}",

note = "Funding Information: Our research was funded by the U.S. National Science Foundation (DEB 0613943) and supported by the Alexander von Humboldt Foundation. We thank Dr. Daniel Mummey and two anonymous reviewers for providing comments on earlier versions of the manuscript. We thank colleagues at the Flathead Lake Biological Station and the John Dalimata Family for support of research at Nyack Flood Plain.",

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AU - Lekberg, Ylva

AU - Stanford, Jack A.

AU - Rillig, Matthias C.

N1 - Funding Information: Our research was funded by the U.S. National Science Foundation (DEB 0613943) and supported by the Alexander von Humboldt Foundation. We thank Dr. Daniel Mummey and two anonymous reviewers for providing comments on earlier versions of the manuscript. We thank colleagues at the Flathead Lake Biological Station and the John Dalimata Family for support of research at Nyack Flood Plain.

PY - 2009/10

Y1 - 2009/10

N2 - Riparian areas are diverse systems where flooding creates new sites for establishment of vegetation. Symbioses with soil microorganisms, such as mycorrhizal fungi, affect vascular plant growth and community composition. It is unknown, however, how mycorrhizal fungi are dispersed along rivers and what potential they have to inoculate roots of plants establishing on recently deposited sedimentary surfaces of flood plains.We measured AMF inocula in sediment deposited by an average spring flood along an expansive riverine flood plain in Montana, USA, to determine whether AMF inocula were present in sediments and what types of propagules (spores, hyphae, or colonized root fragments) contribute to AMFinfectivity. Flood-deposited sediments contained sufficient inocula for AMF to colonize host plants (Sorghum sudanense) grown in a greenhouse, and both AMF hyphal lengths and spore densities were correlated with infectivity. Availability of mycorrhizal inocula, which is patchily distributed in this system,may lead to microsites that differ in ability to support establishment and growth of early-successional plants.

AB - Riparian areas are diverse systems where flooding creates new sites for establishment of vegetation. Symbioses with soil microorganisms, such as mycorrhizal fungi, affect vascular plant growth and community composition. It is unknown, however, how mycorrhizal fungi are dispersed along rivers and what potential they have to inoculate roots of plants establishing on recently deposited sedimentary surfaces of flood plains.We measured AMF inocula in sediment deposited by an average spring flood along an expansive riverine flood plain in Montana, USA, to determine whether AMF inocula were present in sediments and what types of propagules (spores, hyphae, or colonized root fragments) contribute to AMFinfectivity. Flood-deposited sediments contained sufficient inocula for AMF to colonize host plants (Sorghum sudanense) grown in a greenhouse, and both AMF hyphal lengths and spore densities were correlated with infectivity. Availability of mycorrhizal inocula, which is patchily distributed in this system,may lead to microsites that differ in ability to support establishment and growth of early-successional plants.

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Heterogeneity in mycorrhizal inoculum potential of flood-deposited sediments

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