Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.jplph.2014.08.013
Titel (primär) Implication of evolution and diversity in arbuscular and ectomycorrhizal symbioses
Autor Buscot, F.
Quelle Journal of Plant Physiology
Erscheinungsjahr 2015
Department BOOEK; iDiv
Band/Volume 172
Heft 1
Seite von 55
Seite bis 61
Sprache englisch
Keywords Symbiosis; Arbucular mycorrhiza; Ectomycorrhiza; Evolution; Biodiversity
UFZ Querschnittsthemen RU1
Abstract Being highly sensitive to ecological variations, symbiotic associations should inherently have a limited occurrence in nature. To circumvent this sensitivity and reach their universal distribution, symbioses used three strategies during their evolution, which all generated high biodiversity levels: (i) specialization to a specific environment, (ii) protection of one partner via its internalization into the other, (iii) frequent partner exchange. Mycorrhizal associations follow the 3rd strategy, but also present traits of internalization. As most ancient type, arbuscular mycorrhiza (AM) formed by a monophyletic fungal group with reduced species richness did constantly support the mineral nutrition of terrestrial plants and enabled their ecological radiation and actual biodiversity level. In contrast ectomycorrhiza (EM) evolved later and independently within different taxa of fungi able to degrade complex organic plant residues, and the diversity levels of EM fungal and tree partners are balanced. Despite their different origins and diversity levels, AM and EM fungi display similar patterns of diversity dynamics in ecosystems. At each time or succession interval, a few dominant and many rare fungi are recruited by plants roots from a wide reservoir of propagules. However, the dominant fungal partners are frequently replaced in relation to changes in the vegetation or ecological conditions. While the initial establishment of AM and EM fungal communities corresponds to a neutral recruitment, their further succession is rather driven by niche differentiation dynamics.
dauerhafte UFZ-Verlinkung
Buscot, F. (2015):
Implication of evolution and diversity in arbuscular and ectomycorrhizal symbioses
J. Plant Physiol. 172 (1), 55 - 61 10.1016/j.jplph.2014.08.013