Paleomycology of the Princeton Chert II. Dark-septate fungi in the aquatic angiosperm Eorhiza arnoldii indicate a diverse assemblage of root-colonizing fungi during the Eocene

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Issue Date
2013-09Author
Klymiuk, Ashley A.
Taylor, Thomas N.
Taylor, Edith L.
Krings, Michael
Publisher
The Mycological Society of America
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
Tissues of the extinct aquatic or emergent angiosperm, Eorhiza arnoldii incertae sedis, were extensively colonized by microfungi, and in this study we report the presence of several types of sterile mycelia. In addition to inter- and intracellular proliferation of regular septate hyphae, the tissues contain monilioid hyphae with intercalary branching. These filamentous mycelia are spatially associated with two distinct morphotypes of intracellular microsclerotia. These quiescent structures are morphologically similar to loose and cerebriform microsclerotia found within the living tissues of some plants, which have been attributed to an informal assemblage of dematiaceous ascomycetes, the dark-septate endophytes. While there are significant challenges to interpreting the ecology of fossilized fungi, these specimens provide evidence for asymptomatic endophytic colonization of the rooting structures of a 48.7 million year old aquatic angiosperm.
Description
This is the publisher's version, also available electronically from http://www.mycologia.org/content/105/5/1100
ISSN
0027-5514Collections
Citation
Ashley A. Klymiuk et al. (2013). Paleomycology of the Princeton Chert. II. Dark-septate fungi in the aquatic angiosperm Eorhiza arnoldii indicate a diverse assemblage of root-colonizing fungi during the Eocene. Mycologia 105(5):1100-1109. http://www.dx.doi.org/10.3852/13-025
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