Allelochaeta (Sporocadaceae): pigmentation lost and gained

Pedro W. Crous; Fang Liu; Lei Cai; P.A. Barber; R. Thangavel; Brett A Summerell; Michael John Wingfield; J. Edwards; A.J. Carnegie; Johannes Z. Groenewald

doi:10.3114/fuse.2018.02.08

Allelochaeta (Sporocadaceae): pigmentation lost and gained

Pedro W. Crous, Fang Liu, Lei Cai, P.A. Barber, R. Thangavel, Brett A Summerell, Michael John Wingfield, J. Edwards, A.J. Carnegie, Johannes Z. Groenewald

Research output: Contribution to journal/periodical › Article › Scientific › peer-review

11 Citations (Scopus)

Abstract

The appendaged coelomycete genus Seimatosporium (Sporocadaceae, Sordariomycetes) and some of its purported synonyms Allelochaeta, Diploceras and Vermisporium are re-evaluated. Based on DNA data for five loci (ITS, LSU, rpb2, tub2 and tef1), Seimatosporium is shown to be paraphyletic. The ex-type species of Allelochaeta, Discostromopsis and Vermisporium represent a distinct sister clade to which the oldest name Allelochaeta is applied. These genera were traditionally separated based on a combination of conidial pigmentation, septation, and the nature of their conidial appendages. Allelochaeta is revealed to include taxa with both branched or solitary appendages, that could be cellular or continuous, with conidia being (2–)3(–5)-septate, hyaline, or pigmented, concolourous or versicolourous. This suggests that these characters should be applied at species, and not at the generic level. Conidial pigmentation appears to have been lost or gained several times during the evolution of species within Allelochaeta. In total, 25 new species, 15 new combinations, and 10 new epitypifications are proposed.

Original language	English
Pages (from-to)	273-309
Journal	Fungal Systematics and Evolution
Volume	2
DOIs	https://doi.org/10.3114/fuse.2018.02.08
Publication status	Published - 10 Sept 2018

Keywords

Australia
Eucalyptus
40 new taxa
multigene phylogeny
systematics

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10.3114/fuse.2018.02.08Licence: CC BY-NC-SA

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title = "Allelochaeta (Sporocadaceae): pigmentation lost and gained",

abstract = "The appendaged coelomycete genus Seimatosporium (Sporocadaceae, Sordariomycetes) and some of its purported synonyms Allelochaeta, Diploceras and Vermisporium are re-evaluated. Based on DNA data for five loci (ITS, LSU, rpb2, tub2 and tef1), Seimatosporium is shown to be paraphyletic. The ex-type species of Allelochaeta, Discostromopsis and Vermisporium represent a distinct sister clade to which the oldest name Allelochaeta is applied. These genera were traditionally separated based on a combination of conidial pigmentation, septation, and the nature of their conidial appendages. Allelochaeta is revealed to include taxa with both branched or solitary appendages, that could be cellular or continuous, with conidia being (2–)3(–5)-septate, hyaline, or pigmented, concolourous or versicolourous. This suggests that these characters should be applied at species, and not at the generic level. Conidial pigmentation appears to have been lost or gained several times during the evolution of species within Allelochaeta. In total, 25 new species, 15 new combinations, and 10 new epitypifications are proposed. ",

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author = "Crous, {Pedro W.} and Fang Liu and Lei Cai and P.A. Barber and R. Thangavel and Summerell, {Brett A} and Wingfield, {Michael John} and J. Edwards and A.J. Carnegie and Groenewald, {Johannes Z.}",

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AU - Crous, Pedro W.

AU - Liu, Fang

AU - Cai, Lei

AU - Barber, P.A.

AU - Thangavel, R.

AU - Summerell, Brett A

AU - Wingfield, Michael John

AU - Edwards, J.

AU - Carnegie, A.J.

AU - Groenewald, Johannes Z.

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N2 - The appendaged coelomycete genus Seimatosporium (Sporocadaceae, Sordariomycetes) and some of its purported synonyms Allelochaeta, Diploceras and Vermisporium are re-evaluated. Based on DNA data for five loci (ITS, LSU, rpb2, tub2 and tef1), Seimatosporium is shown to be paraphyletic. The ex-type species of Allelochaeta, Discostromopsis and Vermisporium represent a distinct sister clade to which the oldest name Allelochaeta is applied. These genera were traditionally separated based on a combination of conidial pigmentation, septation, and the nature of their conidial appendages. Allelochaeta is revealed to include taxa with both branched or solitary appendages, that could be cellular or continuous, with conidia being (2–)3(–5)-septate, hyaline, or pigmented, concolourous or versicolourous. This suggests that these characters should be applied at species, and not at the generic level. Conidial pigmentation appears to have been lost or gained several times during the evolution of species within Allelochaeta. In total, 25 new species, 15 new combinations, and 10 new epitypifications are proposed.

AB - The appendaged coelomycete genus Seimatosporium (Sporocadaceae, Sordariomycetes) and some of its purported synonyms Allelochaeta, Diploceras and Vermisporium are re-evaluated. Based on DNA data for five loci (ITS, LSU, rpb2, tub2 and tef1), Seimatosporium is shown to be paraphyletic. The ex-type species of Allelochaeta, Discostromopsis and Vermisporium represent a distinct sister clade to which the oldest name Allelochaeta is applied. These genera were traditionally separated based on a combination of conidial pigmentation, septation, and the nature of their conidial appendages. Allelochaeta is revealed to include taxa with both branched or solitary appendages, that could be cellular or continuous, with conidia being (2–)3(–5)-septate, hyaline, or pigmented, concolourous or versicolourous. This suggests that these characters should be applied at species, and not at the generic level. Conidial pigmentation appears to have been lost or gained several times during the evolution of species within Allelochaeta. In total, 25 new species, 15 new combinations, and 10 new epitypifications are proposed.

KW - Australia

KW - Eucalyptus

KW - 40 new taxa

KW - multigene phylogeny

KW - systematics

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DO - 10.3114/fuse.2018.02.08

M3 - Article

SN - 2589-3823

VL - 2

SP - 273

EP - 309

JO - Fungal Systematics and Evolution

JF - Fungal Systematics and Evolution

ER -

Allelochaeta (Sporocadaceae): pigmentation lost and gained

Abstract

Keywords

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