Ectomycorrhizal fungi in Mexican Alnus forests support the host co-migration hypothesis and continental-scale patterns in phylogeography

Peter G. Kennedy, Roberto Garibay-Orijel, Logan M. Higgins, Rodolfo Angeles-Arguiz

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

To examine the geographic patterns in Alnus-associated ectomycorrhizal (ECM) fungal assemblages and determine how they may relate to host plant biogeography, we studied ECM assemblages associated with two Alnus species (Alnus acuminata and Alnus jorullensis) in montane Mexico and compared them with Alnus-associated ECM assemblages located elsewhere in the Americas. ECM root samples were collected from four sites in Mexico (two per host species), identified with ITS and LSU rRNA gene sequences, and assessed using both taxon- (richness, diversity, evenness indices) and sequence divergence-based (UniFrac clustering and significance) analyses. Only 23 ECM taxa were encountered. Clavulina, an ECM lineage never before reported with Alnus, contained the dominant taxon overall. ECM assemblage structure varied between hosts, but UniFrac significance tests indicated that both associated with similar ECM lineage diversity. There was a strikingly high sequence similarity among a diverse array of the ECM taxa in Mexico and those in Alnus forests in Argentina, the United States, and Europe. The Mexican and United States assemblages had greater overlap than those present in Argentina, supporting the host-ECM fungi co-migration hypothesis from a common north temperate origin. Our results indicate that Alnus-associated ECM assemblages have clear patterns in richness and composition across a wide range of geographic locations. Additional data from boreal western North America as well as the eastern United States and Canada will be particularly informative in further understanding the co-biogeographic patterns of Alnus and ECM fungi in the Americas.

Original languageEnglish (US)
Pages (from-to)559-568
Number of pages10
JournalMycorrhiza
Volume21
Issue number6
DOIs
StatePublished - Aug 1 2011

Fingerprint

Alnus
Phylogeography
phylogeography
Fungi
fungus
fungi
Mexico
biogeography
host plant
divergence
Argentina
Clavulina
Alnus acuminata
gene
Forests
Eastern United States
Geographic Locations
North America
rRNA Genes
Canada

Keywords

  • Alnus
  • Americas
  • Biogeography
  • Ectomycorrhiza
  • Fungi
  • ITS
  • LSU
  • Mexico

Cite this

Ectomycorrhizal fungi in Mexican Alnus forests support the host co-migration hypothesis and continental-scale patterns in phylogeography. / Kennedy, Peter G.; Garibay-Orijel, Roberto; Higgins, Logan M.; Angeles-Arguiz, Rodolfo.

In: Mycorrhiza, Vol. 21, No. 6, 01.08.2011, p. 559-568.

Research output: Contribution to journalArticle

Kennedy, Peter G. ; Garibay-Orijel, Roberto ; Higgins, Logan M. ; Angeles-Arguiz, Rodolfo. / Ectomycorrhizal fungi in Mexican Alnus forests support the host co-migration hypothesis and continental-scale patterns in phylogeography. In: Mycorrhiza. 2011 ; Vol. 21, No. 6. pp. 559-568.
@article{2f05f848fc194eedb56fd19d64572df5,
title = "Ectomycorrhizal fungi in Mexican Alnus forests support the host co-migration hypothesis and continental-scale patterns in phylogeography",
abstract = "To examine the geographic patterns in Alnus-associated ectomycorrhizal (ECM) fungal assemblages and determine how they may relate to host plant biogeography, we studied ECM assemblages associated with two Alnus species (Alnus acuminata and Alnus jorullensis) in montane Mexico and compared them with Alnus-associated ECM assemblages located elsewhere in the Americas. ECM root samples were collected from four sites in Mexico (two per host species), identified with ITS and LSU rRNA gene sequences, and assessed using both taxon- (richness, diversity, evenness indices) and sequence divergence-based (UniFrac clustering and significance) analyses. Only 23 ECM taxa were encountered. Clavulina, an ECM lineage never before reported with Alnus, contained the dominant taxon overall. ECM assemblage structure varied between hosts, but UniFrac significance tests indicated that both associated with similar ECM lineage diversity. There was a strikingly high sequence similarity among a diverse array of the ECM taxa in Mexico and those in Alnus forests in Argentina, the United States, and Europe. The Mexican and United States assemblages had greater overlap than those present in Argentina, supporting the host-ECM fungi co-migration hypothesis from a common north temperate origin. Our results indicate that Alnus-associated ECM assemblages have clear patterns in richness and composition across a wide range of geographic locations. Additional data from boreal western North America as well as the eastern United States and Canada will be particularly informative in further understanding the co-biogeographic patterns of Alnus and ECM fungi in the Americas.",
keywords = "Alnus, Americas, Biogeography, Ectomycorrhiza, Fungi, ITS, LSU, Mexico",
author = "Kennedy, {Peter G.} and Roberto Garibay-Orijel and Higgins, {Logan M.} and Rodolfo Angeles-Arguiz",
year = "2011",
month = "8",
day = "1",
doi = "10.1007/s00572-011-0366-2",
language = "English (US)",
volume = "21",
pages = "559--568",
journal = "Mycorrhiza",
issn = "0940-6360",
publisher = "Springer Verlag",
number = "6",

}

TY - JOUR

T1 - Ectomycorrhizal fungi in Mexican Alnus forests support the host co-migration hypothesis and continental-scale patterns in phylogeography

AU - Kennedy, Peter G.

AU - Garibay-Orijel, Roberto

AU - Higgins, Logan M.

AU - Angeles-Arguiz, Rodolfo

PY - 2011/8/1

Y1 - 2011/8/1

N2 - To examine the geographic patterns in Alnus-associated ectomycorrhizal (ECM) fungal assemblages and determine how they may relate to host plant biogeography, we studied ECM assemblages associated with two Alnus species (Alnus acuminata and Alnus jorullensis) in montane Mexico and compared them with Alnus-associated ECM assemblages located elsewhere in the Americas. ECM root samples were collected from four sites in Mexico (two per host species), identified with ITS and LSU rRNA gene sequences, and assessed using both taxon- (richness, diversity, evenness indices) and sequence divergence-based (UniFrac clustering and significance) analyses. Only 23 ECM taxa were encountered. Clavulina, an ECM lineage never before reported with Alnus, contained the dominant taxon overall. ECM assemblage structure varied between hosts, but UniFrac significance tests indicated that both associated with similar ECM lineage diversity. There was a strikingly high sequence similarity among a diverse array of the ECM taxa in Mexico and those in Alnus forests in Argentina, the United States, and Europe. The Mexican and United States assemblages had greater overlap than those present in Argentina, supporting the host-ECM fungi co-migration hypothesis from a common north temperate origin. Our results indicate that Alnus-associated ECM assemblages have clear patterns in richness and composition across a wide range of geographic locations. Additional data from boreal western North America as well as the eastern United States and Canada will be particularly informative in further understanding the co-biogeographic patterns of Alnus and ECM fungi in the Americas.

AB - To examine the geographic patterns in Alnus-associated ectomycorrhizal (ECM) fungal assemblages and determine how they may relate to host plant biogeography, we studied ECM assemblages associated with two Alnus species (Alnus acuminata and Alnus jorullensis) in montane Mexico and compared them with Alnus-associated ECM assemblages located elsewhere in the Americas. ECM root samples were collected from four sites in Mexico (two per host species), identified with ITS and LSU rRNA gene sequences, and assessed using both taxon- (richness, diversity, evenness indices) and sequence divergence-based (UniFrac clustering and significance) analyses. Only 23 ECM taxa were encountered. Clavulina, an ECM lineage never before reported with Alnus, contained the dominant taxon overall. ECM assemblage structure varied between hosts, but UniFrac significance tests indicated that both associated with similar ECM lineage diversity. There was a strikingly high sequence similarity among a diverse array of the ECM taxa in Mexico and those in Alnus forests in Argentina, the United States, and Europe. The Mexican and United States assemblages had greater overlap than those present in Argentina, supporting the host-ECM fungi co-migration hypothesis from a common north temperate origin. Our results indicate that Alnus-associated ECM assemblages have clear patterns in richness and composition across a wide range of geographic locations. Additional data from boreal western North America as well as the eastern United States and Canada will be particularly informative in further understanding the co-biogeographic patterns of Alnus and ECM fungi in the Americas.

KW - Alnus

KW - Americas

KW - Biogeography

KW - Ectomycorrhiza

KW - Fungi

KW - ITS

KW - LSU

KW - Mexico

UR - http://www.scopus.com/inward/record.url?scp=79960155949&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79960155949&partnerID=8YFLogxK

U2 - 10.1007/s00572-011-0366-2

DO - 10.1007/s00572-011-0366-2

M3 - Article

C2 - 21331794

AN - SCOPUS:79960155949

VL - 21

SP - 559

EP - 568

JO - Mycorrhiza

JF - Mycorrhiza

SN - 0940-6360

IS - 6

ER -