New freshwater species of Ascoiaiwania and Savoryella from Taiwan

H. S. Chang; S. Y. Hsieh; E. B.G. Jones; S. J. Read; S. T. Moss

doi:10.1017/S0953756297005637

New freshwater species of Ascoiaiwania and Savoryella from Taiwan

H. S. Chang
, S. Y. Hsieh
, E. B.G. Jones
, S. J. Read
, S. T. Moss

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

41 Citations (Scopus)

Abstract

Four new taxa are described, each having multiseptate ascospores with hyaline end cells; Savoryella limnetica, Ascolaiwania wulai, A. hsilio and A. sawada). Savoryella and Ascolaiwania are evaluated and separated by the following characters: Savoryella has broad, up to 8 um paraphyses (sparse) that are septate and rounded at their ends, and smaller asci with an apical thickening containing a plugged pore and 3-septate ascospores; Ascolaiwania has narrow, filiform, septate paraphyses up to 2 urn wide, but these deliquesce early and are rarely observed in mature ascomata. Ascolaiwania also has asci with a well-developed apical ring and plugged pore and ascospores generally with more than 3 septa. Ultrastructural studies of A. lignicola showed that the ascopores are covered by a thin mucilaginous sheath and unitunicate asci with the wall comprising an outer, 30-40 nm electron-dense layer and an inner, 420-450 nm, thick, electron-transparent layer. Asci have a well-developed apical apparatus consisting of an electron-dense apical ring with a plug. The plug deliquesces prior to ascospore release. The ascospore wall comprises an electron-dense episporium and a less electron-dense mesosporium. External to the episporium is a fibro-granular sheath.
Copyright © 1998 British Mycological Society

Original language	English
Pages (from-to)	709-718
Journal	Mycological Research
Volume	102
Issue number	6
DOIs	https://doi.org/10.1017/S0953756297005637
Publication status	Published - 1998
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

We are grateful to the Natural Environment Research Council for the award of a research grant (GR3/7122) to undertake the ultrastructure study and to Colin Derrick for photographic assistance. Prof. Jones’s visit to Academia Sinica, Taipei, was financed by the National Science Council of the Republic of China. Prof. Jones is grateful to the Royal Society, London and the City University of Hong Kong for the award of a Kan Tong Po Visiting Professorship. We are grateful to the two referees for valuable suggestions and to Dr Kevin Hyde for a preview of their paper on Savoryella curvispora.

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title = "New freshwater species of Ascoiaiwania and Savoryella from Taiwan",

abstract = "Four new taxa are described, each having multiseptate ascospores with hyaline end cells; Savoryella limnetica, Ascolaiwania wulai, A. hsilio and A. sawada). Savoryella and Ascolaiwania are evaluated and separated by the following characters: Savoryella has broad, up to 8 um paraphyses (sparse) that are septate and rounded at their ends, and smaller asci with an apical thickening containing a plugged pore and 3-septate ascospores; Ascolaiwania has narrow, filiform, septate paraphyses up to 2 urn wide, but these deliquesce early and are rarely observed in mature ascomata. Ascolaiwania also has asci with a well-developed apical ring and plugged pore and ascospores generally with more than 3 septa. Ultrastructural studies of A. lignicola showed that the ascopores are covered by a thin mucilaginous sheath and unitunicate asci with the wall comprising an outer, 30-40 nm electron-dense layer and an inner, 420-450 nm, thick, electron-transparent layer. Asci have a well-developed apical apparatus consisting of an electron-dense apical ring with a plug. The plug deliquesces prior to ascospore release. The ascospore wall comprises an electron-dense episporium and a less electron-dense mesosporium. External to the episporium is a fibro-granular sheath. Copyright {\textcopyright} 1998 British Mycological Society",

author = "Chang, \{H. S.\} and Hsieh, \{S. Y.\} and Jones, \{E. B.G.\} and Read, \{S. J.\} and Moss, \{S. T.\}",

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AU - Chang, H. S.

AU - Hsieh, S. Y.

AU - Jones, E. B.G.

AU - Read, S. J.

AU - Moss, S. T.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 1998

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N2 - Four new taxa are described, each having multiseptate ascospores with hyaline end cells; Savoryella limnetica, Ascolaiwania wulai, A. hsilio and A. sawada). Savoryella and Ascolaiwania are evaluated and separated by the following characters: Savoryella has broad, up to 8 um paraphyses (sparse) that are septate and rounded at their ends, and smaller asci with an apical thickening containing a plugged pore and 3-septate ascospores; Ascolaiwania has narrow, filiform, septate paraphyses up to 2 urn wide, but these deliquesce early and are rarely observed in mature ascomata. Ascolaiwania also has asci with a well-developed apical ring and plugged pore and ascospores generally with more than 3 septa. Ultrastructural studies of A. lignicola showed that the ascopores are covered by a thin mucilaginous sheath and unitunicate asci with the wall comprising an outer, 30-40 nm electron-dense layer and an inner, 420-450 nm, thick, electron-transparent layer. Asci have a well-developed apical apparatus consisting of an electron-dense apical ring with a plug. The plug deliquesces prior to ascospore release. The ascospore wall comprises an electron-dense episporium and a less electron-dense mesosporium. External to the episporium is a fibro-granular sheath. Copyright © 1998 British Mycological Society

AB - Four new taxa are described, each having multiseptate ascospores with hyaline end cells; Savoryella limnetica, Ascolaiwania wulai, A. hsilio and A. sawada). Savoryella and Ascolaiwania are evaluated and separated by the following characters: Savoryella has broad, up to 8 um paraphyses (sparse) that are septate and rounded at their ends, and smaller asci with an apical thickening containing a plugged pore and 3-septate ascospores; Ascolaiwania has narrow, filiform, septate paraphyses up to 2 urn wide, but these deliquesce early and are rarely observed in mature ascomata. Ascolaiwania also has asci with a well-developed apical ring and plugged pore and ascospores generally with more than 3 septa. Ultrastructural studies of A. lignicola showed that the ascopores are covered by a thin mucilaginous sheath and unitunicate asci with the wall comprising an outer, 30-40 nm electron-dense layer and an inner, 420-450 nm, thick, electron-transparent layer. Asci have a well-developed apical apparatus consisting of an electron-dense apical ring with a plug. The plug deliquesces prior to ascospore release. The ascospore wall comprises an electron-dense episporium and a less electron-dense mesosporium. External to the episporium is a fibro-granular sheath. Copyright © 1998 British Mycological Society

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EP - 718

JO - Mycological Research

JF - Mycological Research

IS - 6

ER -

New freshwater species of Ascoiaiwania and Savoryella from Taiwan

Abstract

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