Plectosporium alismatis comb. nov. a new placement for the Alismataceae pathogen Rhynchosporium alismatis

Wayne Pitt; Stephen B. Goodwin; Gavin Ash; Norma J. Cother; Eric John Cother

doi:10.1017/S0953756204000541

Plectosporium alismatis comb. nov. a new placement for the Alismataceae pathogen Rhynchosporium alismatis

Wayne Pitt, Stephen B. Goodwin, Gavin Ash, Norma J. Cother, Eric John Cother

Agricultural, Environmental and Veterinary Sciences

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

The phytopathogen Rhynchosporium alismatis occurring on Alisma, Sagittaria and other genera in the Alismataceae is under investigation as a mycoherbicide for alismataceous weeds in Australian rice crops. The type species of Rhynchosporium, R. secalis belongs in the Helotiales while the phylogenetic relationships of R. alismatis were unknown. To identify fungi related to R. alismatis the internal transcribed spacer (ITS) region of the ribosomal DNA (ITS1, 5.8S rRNA gene, ITS2) of 56 isolates was sequenced and compared to those available in databases. Analysis of ITS sequences revealed close relationships between R. alismatis and the teleomorph genus Plectosphaerella as well as several anamorphic fungi which were primarily species of Verticillium. Rhynchosporium alismatis and Plectosphaerella cucumerina clustered together with 98% bootstrap support. Morphological comparisons supported this relationship indicating that R. alismatis and the anamorphic genus Plectosporium are congeneric. Rhynchosporium alismatis is transferred to Plectosporium a name proposed for conservation.

Original language	English
Pages (from-to)	775-780
Number of pages	6
Journal	Fungal Biology
Volume	108
Issue number	7
DOIs	https://doi.org/10.1017/S0953756204000541
Publication status	Published - 2004

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title = "Plectosporium alismatis comb. nov. a new placement for the Alismataceae pathogen Rhynchosporium alismatis",

abstract = "The phytopathogen Rhynchosporium alismatis occurring on Alisma, Sagittaria and other genera in the Alismataceae is under investigation as a mycoherbicide for alismataceous weeds in Australian rice crops. The type species of Rhynchosporium, R. secalis belongs in the Helotiales while the phylogenetic relationships of R. alismatis were unknown. To identify fungi related to R. alismatis the internal transcribed spacer (ITS) region of the ribosomal DNA (ITS1, 5.8S rRNA gene, ITS2) of 56 isolates was sequenced and compared to those available in databases. Analysis of ITS sequences revealed close relationships between R. alismatis and the teleomorph genus Plectosphaerella as well as several anamorphic fungi which were primarily species of Verticillium. Rhynchosporium alismatis and Plectosphaerella cucumerina clustered together with 98% bootstrap support. Morphological comparisons supported this relationship indicating that R. alismatis and the anamorphic genus Plectosporium are congeneric. Rhynchosporium alismatis is transferred to Plectosporium a name proposed for conservation.",

author = "Wayne Pitt and Goodwin, {Stephen B.} and Gavin Ash and Cother, {Norma J.} and Cother, {Eric John}",

note = "Imported on 12 Apr 2017 - DigiTool details were: Journal title (773t) = Mycological Research. ISSNs: 0953-7562; ",

year = "2004",

doi = "10.1017/S0953756204000541",

language = "English",

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journal = "Fungal Biology",

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T1 - Plectosporium alismatis comb. nov. a new placement for the Alismataceae pathogen Rhynchosporium alismatis

AU - Pitt, Wayne

AU - Goodwin, Stephen B.

AU - Ash, Gavin

AU - Cother, Norma J.

AU - Cother, Eric John

N1 - Imported on 12 Apr 2017 - DigiTool details were: Journal title (773t) = Mycological Research. ISSNs: 0953-7562;

PY - 2004

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N2 - The phytopathogen Rhynchosporium alismatis occurring on Alisma, Sagittaria and other genera in the Alismataceae is under investigation as a mycoherbicide for alismataceous weeds in Australian rice crops. The type species of Rhynchosporium, R. secalis belongs in the Helotiales while the phylogenetic relationships of R. alismatis were unknown. To identify fungi related to R. alismatis the internal transcribed spacer (ITS) region of the ribosomal DNA (ITS1, 5.8S rRNA gene, ITS2) of 56 isolates was sequenced and compared to those available in databases. Analysis of ITS sequences revealed close relationships between R. alismatis and the teleomorph genus Plectosphaerella as well as several anamorphic fungi which were primarily species of Verticillium. Rhynchosporium alismatis and Plectosphaerella cucumerina clustered together with 98% bootstrap support. Morphological comparisons supported this relationship indicating that R. alismatis and the anamorphic genus Plectosporium are congeneric. Rhynchosporium alismatis is transferred to Plectosporium a name proposed for conservation.

AB - The phytopathogen Rhynchosporium alismatis occurring on Alisma, Sagittaria and other genera in the Alismataceae is under investigation as a mycoherbicide for alismataceous weeds in Australian rice crops. The type species of Rhynchosporium, R. secalis belongs in the Helotiales while the phylogenetic relationships of R. alismatis were unknown. To identify fungi related to R. alismatis the internal transcribed spacer (ITS) region of the ribosomal DNA (ITS1, 5.8S rRNA gene, ITS2) of 56 isolates was sequenced and compared to those available in databases. Analysis of ITS sequences revealed close relationships between R. alismatis and the teleomorph genus Plectosphaerella as well as several anamorphic fungi which were primarily species of Verticillium. Rhynchosporium alismatis and Plectosphaerella cucumerina clustered together with 98% bootstrap support. Morphological comparisons supported this relationship indicating that R. alismatis and the anamorphic genus Plectosporium are congeneric. Rhynchosporium alismatis is transferred to Plectosporium a name proposed for conservation.

U2 - 10.1017/S0953756204000541

DO - 10.1017/S0953756204000541

M3 - Article

SN - 1878-6146

VL - 108

SP - 775

EP - 780

JO - Fungal Biology

JF - Fungal Biology

IS - 7

ER -

Plectosporium alismatis comb. nov. a new placement for the Alismataceae pathogen Rhynchosporium alismatis

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