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dc.contributor.authorTaylor, Thomas N.
dc.contributor.authorRemy, Winfried
dc.contributor.authorHass, Hagen
dc.contributor.authorKerp, Hans
dc.identifier.citationTaylor, Thomas N.; Remy, W.; Hass, H.; Kerp, H. (1995). "Fossil Arbuscular Mycorrhizae from the Early Devonian." Mycologia, 87(4):560-573.
dc.description.abstractThe 400 million-year-old Rhynie chert has provided a wealth of information not only of early land plants, but also of the fungi that inhabited this paleoecosystem. In this paper we report the first unequivocal evidence of arbuscules in an endomycorrhizal symbiosis. A new genus, Glomites, is characterized by extraradical, aseptate hyphae with a two-parted wall, and an intraradical, highly branched network of thin-walled hyphae. Hyphal branches produce terminal, elongate-globose multilayered spores that lack a basal septum. Other hyphae penetrate cell walls and form arbuscules. Arbuscules are morphologically identical to those of living arbuscular mycorrhizae (AM) in consisting of a basal trunk and highly dichotomous distal branches that form a bush-like tuft. Arbuscules are confined to a narrow band of specialized thinwalled cells in the outer cortex that continue to be meristematic. Features of the fossil biotroph are compared with those of extant arbuscular mycorrhizae. Although interpretations regarding the evolution of mycorrhizal mutualisms continue to be speculative, the demonstration of arbuscules in the Early Devonian indicates that nutrient transfer is an ancient phenomenon that may have been in existence when plants invaded the land.en_US
dc.publisherMycological Society of Americaen_US
dc.subjectRhynie cherten_US
dc.titleFossil Arbuscular Mycorrhizae from the Early Devonianen_US
kusw.kuauthorTaylor, Thomas N.
kusw.kudepartmentEcology and Evolutionary Biologyen_US
kusw.oaversionScholarly/refereed, publisher version
kusw.oapolicyThis item does not meet KU Open Access policy criteria.

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