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Testing the link between community structure and function for ectomycorrhizal fungi involved in a global tripartite symbiosis.
. 2014 Apr; 202(1):287-96.

Abstract

Alnus trees associate with ectomycorrhizal (ECM) fungi and nitrogen-fixing Frankia bacteria and, although their ECM fungal communities are uncommonly host specific and species poor, it is unclear whether the functioning of Alnus ECM fungal symbionts differs from that of other ECM hosts. We used exoenzyme root tip assays and molecular identification to test whether ECM fungi on Alnus rubra differed in their ability to access organic phosphorus (P) and nitrogen (N) when compared with ECM fungi on the non-Frankia host Pseudotsuga menziesii. At the community level, potential acid phosphatase (AP) activity of ECM fungal root tips from A. rubra was significantly higher than that from P. menziesii, whereas potential leucine aminopeptidase (LA) activity was significantly lower for A. rubra root tips at one of the two sites. At the individual species level, there was no clear relationship between ECM fungal relative root tip abundance and relative AP or LA enzyme activities on either host. Our results are consistent with the hypothesis that ECM fungal communities associated with Alnus trees have enhanced organic P acquisition abilities relative to non-Frankia ECM hosts. This shift, in combination with the chemical conditions present in Alnus forest soils, may drive the atypical structure of Alnus ECM fungal communities.

Authors+Show Affiliations

Department of Biology, Lewis and Clark College, 0615 SW Palatine Hill Rd, Portland, OR, 97219, USA; Hawkesbury Institute for the Environment, University of Western Sydney, Locked Bag 1797, Penrith, NSW, 2751, Australia.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

24320607

Citation

Walker, Jennifer K M., et al. "Testing the Link Between Community Structure and Function for Ectomycorrhizal Fungi Involved in a Global Tripartite Symbiosis." The New Phytologist, vol. 202, no. 1, 2014, pp. 287-96.
Walker JK, Cohen H, Higgins LM, et al. Testing the link between community structure and function for ectomycorrhizal fungi involved in a global tripartite symbiosis. New Phytol. 2014;202(1):287-96.
Walker, J. K., Cohen, H., Higgins, L. M., & Kennedy, P. G. (2014). Testing the link between community structure and function for ectomycorrhizal fungi involved in a global tripartite symbiosis. The New Phytologist, 202(1), 287-96. https://doi.org/10.1111/nph.12638
Walker JK, et al. Testing the Link Between Community Structure and Function for Ectomycorrhizal Fungi Involved in a Global Tripartite Symbiosis. New Phytol. 2014;202(1):287-96. PubMed PMID: 24320607.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Testing the link between community structure and function for ectomycorrhizal fungi involved in a global tripartite symbiosis. AU - Walker,Jennifer K M, AU - Cohen,Hannah, AU - Higgins,Logan M, AU - Kennedy,Peter G, Y1 - 2013/12/10/ PY - 2013/09/29/received PY - 2013/11/10/accepted PY - 2013/12/11/entrez PY - 2013/12/11/pubmed PY - 2014/10/29/medline KW - Alnus rubra KW - Frankia bacteria KW - Pseudotsuga menziesii KW - community structure and function KW - ectomycorrhizal fungi KW - root tip exoenzyme assays KW - tripartite symbiosis SP - 287 EP - 96 JF - The New phytologist JO - New Phytol. VL - 202 IS - 1 N2 - Alnus trees associate with ectomycorrhizal (ECM) fungi and nitrogen-fixing Frankia bacteria and, although their ECM fungal communities are uncommonly host specific and species poor, it is unclear whether the functioning of Alnus ECM fungal symbionts differs from that of other ECM hosts. We used exoenzyme root tip assays and molecular identification to test whether ECM fungi on Alnus rubra differed in their ability to access organic phosphorus (P) and nitrogen (N) when compared with ECM fungi on the non-Frankia host Pseudotsuga menziesii. At the community level, potential acid phosphatase (AP) activity of ECM fungal root tips from A. rubra was significantly higher than that from P. menziesii, whereas potential leucine aminopeptidase (LA) activity was significantly lower for A. rubra root tips at one of the two sites. At the individual species level, there was no clear relationship between ECM fungal relative root tip abundance and relative AP or LA enzyme activities on either host. Our results are consistent with the hypothesis that ECM fungal communities associated with Alnus trees have enhanced organic P acquisition abilities relative to non-Frankia ECM hosts. This shift, in combination with the chemical conditions present in Alnus forest soils, may drive the atypical structure of Alnus ECM fungal communities. SN - 1469-8137 UR - https://www.unboundmedicine.com/medline/citation/24320607/Testing_the_link_between_community_structure_and_function_for_ectomycorrhizal_fungi_involved_in_a_global_tripartite_symbiosis_ L2 - https://doi.org/10.1111/nph.12638 DB - PRIME DP - Unbound Medicine ER -