Carbon sequestration is related to mycorrhizal fungal community shifts during long-term succession in boreal forests

Carbon sequestration is related to mycorrhizal fungal community shifts during long-term succession in boreal forests

© 2014 The Authors New Phytologist © 2014 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1990. - 205(2015), 4 vom: 12. März, Seite 1525-1536
1. Verfasser: Clemmensen, Karina E (VerfasserIn)
Weitere Verfasser: Finlay, Roger D, Dahlberg, Anders, Stenlid, Jan, Wardle, David A, Lindahl, Björn D
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article 454-sequencing Betula pubescens Picea abies Pinus sylvestris boreal forest carbon (C) sequestration ectomycorrhizal exploration types mycorrhizal symbiosis
Beschreibung
Zusammenfassung:© 2014 The Authors New Phytologist © 2014 New Phytologist Trust.
Boreal forest soils store a major proportion of the global terrestrial carbon (C) and below-ground inputs contribute as much as above-ground plant litter to the total C stored in the soil. A better understanding of the dynamics and drivers of root-associated fungal communities is essential to predict long-term soil C storage and climate feedbacks in northern ecosystems. We used 454-pyrosequencing to identify fungal communities across fine-scaled soil profiles in a 5000 yr fire-driven boreal forest chronosequence, with the aim of pinpointing shifts in fungal community composition that may underlie variation in below-ground C sequestration. In early successional-stage forests, higher abundance of cord-forming ectomycorrhizal fungi (such as Cortinarius and Suillus species) was linked to rapid turnover of mycelial biomass and necromass, efficient nitrogen (N) mobilization and low C sequestration. In late successional-stage forests, cord formers declined, while ericoid mycorrhizal ascomycetes continued to dominate, potentially facilitating long-term humus build-up through production of melanized hyphae that resist decomposition. Our results suggest that cord-forming ectomycorrhizal fungi and ericoid mycorrhizal fungi play opposing roles in below-ground C storage. We postulate that, by affecting turnover and decomposition of fungal tissues, mycorrhizal fungal identity and growth form are critical determinants of C and N sequestration in boreal forests
Beschreibung:Date Completed 28.09.2015
Date Revised 18.04.2021
published: Print-Electronic
CommentIn: New Phytol. 2015 Mar;205(4):1378-1380. doi: 10.1111/nph.13289. - PMID 25645716
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.13208