Cretaceous Fungal Scutella from the Lower Potomac Group Zone 1: <i>Stomatothyrium placocentrum</i> gen. et sp. nov., a Dothideomycete Colonizer of Conifer Stomata

Renard, Ludovic Le; Stockey, Ruth A.; Upchurch, Garland R.; Berbee, Mary L.

doi:10.1086/715635

International Journal of Plant Sciences

2021

DOI: 10.1086/715635

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Cretaceous Fungal Scutella from the Lower Potomac Group Zone 1: Stomatothyrium placocentrum gen. et sp. nov., a Dothideomycete Colonizer of Conifer Stomata

Ludovic Le Renard

Ruth A. Stockey

Garland R. Upchurch

et al.

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2024

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A new leaf inhabiting ascomycete from the Jurassic (ca 170 Mya) of Yorkshire, UK, and insights into the appearance and diversification of filamentous Ascomycota

Le Renard,

Strullu-Derrien,

Berbee

et al. 2024

IMA Fungus

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Leaf-associated fungi, the fungi that depend on leaves to sporulate, have a rich Cenozoic record, however their earlier diversity is poorly characterized. Here we describe Harristroma eboracense gen. et sp. nov., a Middle Jurassic leaf-associated fungus colonizing the leaf cuticle of Nilssonia tenuicaulis (cycadophyte). To place our newly described species into a picture of the diversification of Mesozoic fungi, we reassess fossils with leaf-associated stromata in the context of fungal molecular phylogeny. Being melanized, with radiate stromata, and on leaves, H. eboracense and other fossils from the Jurassic and earlier periods are probably related to filamentous Ascomycota in the superclass Leotiomyceta. Characters needed for further resolution of leaf-associated fungal biology and classification, such as the presence of an ostiole for spore discharge and appressoria for entry into leaf tissue first appear in the Mesozoic fossil record. Among Early Cretaceous fossils, Spataporthe taylorii represents the oldest unambiguous evidence of perithecial Sordariomycetes while Protographum luttrellii and Bleximothyrium ostiolatum are the oldest Dothideomycetes thyriothecia. Environmental observations show that broad leaved gymnosperms (especially cycadophytes) growing in warm temperate wet forests might have been the first environment for the radiation of Leotiomyceta.

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A new leaf inhabiting ascomycete from the Jurassic (ca 170 Mya) of Yorkshire, UK, and insights into the appearance and diversification of filamentous Ascomycota

Le Renard,

Strullu-Derrien,

Berbee

et al. 2024

IMA Fungus

View full text Add to dashboard Cite

show abstract

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Cretaceous Fungal Scutella from the Lower Potomac Group Zone 1: Stomatothyrium placocentrum gen. et sp. nov., a Dothideomycete Colonizer of Conifer Stomata

Cited by 1 publication

References 56 publications

A new leaf inhabiting ascomycete from the Jurassic (ca 170 Mya) of Yorkshire, UK, and insights into the appearance and diversification of filamentous Ascomycota

A new leaf inhabiting ascomycete from the Jurassic (ca 170 Mya) of Yorkshire, UK, and insights into the appearance and diversification of filamentous Ascomycota

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