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Citation for Study 11183

About Citation title: "Periglandula, a new fungal genus within the family Clavicipitaceae and its association with Convolvulaceae".
About Study name: "Periglandula, a new fungal genus within the family Clavicipitaceae and its association with Convolvulaceae".
About This study is part of submission 11173 (Status: Published).

Citation

Steiner U., Leibner S., Schardl C.L., Leuchtmann A., & Leistner E. 2011. Periglandula, a new fungal genus within the family Clavicipitaceae and its association with Convolvulaceae. Mycologia, .

Authors

  • Steiner U.
  • Leibner S.
  • Schardl C.L. (submitter) Phone 859-218-0730
  • Leuchtmann A.
  • Leistner E.

Abstract

We describe two newly discovered fungi living on the adaxial leaf surface of plants belonging to the family Convolvulaceae, Ipomoea asarifolia (Desr.)Roem. et Schult. and Turbina corymbosa (L.)Raf. The fungi apparently are epibionts since hyphae were never observed to penetrate epidermal cells or stomata of their respective host plants, and most remarkably are intimately associated with secretory glands on the leaf surface. Hyphae and structures resembling chlamydospores and synnemata (but lacking conidia), formed by both fungal species are phenotypically nearly indistinguishable either after in vitro growth or when examined in vivo on the leaf surface. Phylogenetic trees based on aligned DNA sequences from nuclear genes for β-tubulin (tubB) and RNA Polymerase II subunit 1 (rpbA), and the mitochondrial gene for ATP synthase F0 subunit A (atp6), grouped the fungal species in a clade within the family Clavicipitaceae. Clavicipitaceous fungi isolated from the two different plant species could be distinguished by their sequences of atp6 and rpbA, and nuclear genes for γ-actin (actG), translation elongation factor 1α (tefA), and 4(γ,γ-dimethylallyl)tryptophan synthase (dmaW), the determinant step in ergoline (syn. ergot) alkaloid biosynthesis. Based on these findings we propose a new fungal genus, Periglandula, and describe two new species, Periglandula ipomoeae from host plant Ipomoea asarifolia, and Periglandula turbinae from Turbina corymbosa.

Keywords

Ergoline alkaloids, ergot alkaloids, Ipomoea asarifolia, molecular systematics, Periglandula ipomoeae, Periglandula turbinae, symbiosis, Turbina corymbosa

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S11183
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