A new species of Memnoniella (Hypocreales, Stachybotryaceae), Memnoniella pseudodichroa, from the ancient subtropical giant fern Angiopteris lygodiifolia (Marattiaceae) in Taiwan

Yeh, Yu-Wei; Hsieh, Ching-Ming; Yeh, Yi‐Cheun; Huang, Yao‐Moan; Kirschner, Roland

doi:10.1007/s00606-023-01855-1

Plant Syst Evol

2023

DOI: 10.1007/s00606-023-01855-1

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A new species of Memnoniella (Hypocreales, Stachybotryaceae), Memnoniella pseudodichroa, from the ancient subtropical giant fern Angiopteris lygodiifolia (Marattiaceae) in Taiwan

Yu-Wei Yeh

Ching-Ming Hsieh

Yi‐Cheun Yeh

et al.

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2024

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An independent Taiwanese lineage of powdery mildew on the endemic host species Koelreuteria henryi

Yeh,

Kirschner

2024

Bot Stud

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Background Powdery mildews (Erysiphaceae, Ascomycota) are common plant disease agents and also cause stress for forest and fruit trees worldwide as well as in Taiwan. The powdery mildew Erysiphe bulbouncinula on Koelreuteria host trees was considered an endemic species in China. While in China the host was K. paniculata and only the teleomorph stage found, the anamorph and the teleomorph were both recorded for the host in Taiwan, K. henryi. We aimed to clarify the relationship of the powdery mildews recorded under E. bulbouncinula with an apparently disjunct distribution. Results Specimens of powdery mildew on K. henryi from Taiwan were characterized based on the anamorph morphology and DNA sequences. They revealed a new record of Sawadaea koelreuteriae for this host species and Taiwan and a new species of Erysiphe, E. formosana, sister to E. bulbouncinula from China. Conclusions In Erysiphe on Koelreuteria hosts, speciation of plant parasitic fungi seems to be correlated with disjunct host and geographic distribution possibly shaped by extinction of potential host species which are known only as fossils. Two of the three extant East Asian species of Koelreuteria are now known as hosts of specific Erysiphe species. We may predict a further not yet discovered Erysiphe species on the third East Asian species, K. bipinnata, in South and Southwest China. In the speciation in Sawadaea, the extinction events in Koelreuteria can be excluded from being involved.

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An independent Taiwanese lineage of powdery mildew on the endemic host species Koelreuteria henryi

Yeh,

Kirschner

2024

Bot Stud

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A new species of Memnoniella (Hypocreales, Stachybotryaceae), Memnoniella pseudodichroa, from the ancient subtropical giant fern Angiopteris lygodiifolia (Marattiaceae) in Taiwan

Cited by 1 publication

References 21 publications

An independent Taiwanese lineage of powdery mildew on the endemic host species Koelreuteria henryi

An independent Taiwanese lineage of powdery mildew on the endemic host species Koelreuteria henryi

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