Cargando…

Phylogenetic placement and reassessment of Asperisporium pongamiae as Pedrocrousiella pongamiae gen. et comb. nov. (Mycosphaerellaceae)

The leaf spot disease of Pongamia pinnata caused by an asperisporium-like asexual morph, which is usually referred to as Asperisporium pongamiae, is quite common during monsoon seasons in India. Phylogenetic analyses, based on LSU and rpb2 sequence data, and blast searches using ITS sequence data, r...

Descripción completa

Detalles Bibliográficos
Autores principales: Rajeshkumar, K.C., Braun, U., Groenewald, J.Z., Lad, S.S., Ashtekar, N., Fatima, S., Anand, G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Westerdijk Fungal Biodiversity Institute 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8166208/
https://www.ncbi.nlm.nih.gov/pubmed/34124622
http://dx.doi.org/10.3114/fuse.2021.07.08
_version_ 1783701458997215232
author Rajeshkumar, K.C.
Braun, U.
Groenewald, J.Z.
Lad, S.S.
Ashtekar, N.
Fatima, S.
Anand, G.
author_facet Rajeshkumar, K.C.
Braun, U.
Groenewald, J.Z.
Lad, S.S.
Ashtekar, N.
Fatima, S.
Anand, G.
author_sort Rajeshkumar, K.C.
collection PubMed
description The leaf spot disease of Pongamia pinnata caused by an asperisporium-like asexual morph, which is usually referred to as Asperisporium pongamiae, is quite common during monsoon seasons in India. Phylogenetic analyses, based on LSU and rpb2 sequence data, and blast searches using ITS sequence data, revealed that this ascomycete forms a lineage within Mycosphaerellaceae distant from all other generic lineages. Pedrocrousiella gen. nov., with P. pongamiae comb. nov., based on Fusicladium pongamiae (≡ A. pongamiae), as type species is introduced for this lineage. This species has been considered the asexual morph of Mycosphaerella pongamiae (≡ Stigmatea pongamiae). However, this connection is unproven and was just based on the occasional association of the two taxa in some collections. Several attempts to induce the formation of a sexual morph in culture failed, therefore the putative connection between these morphs could not be confirmed. Asperisporium pongamiae-pinnatae is reduced to synonymy with P. pongamiae. Asperisporium pongamiae-pinnatae was introduced because of the wrong assumption that F. pongamiae had been described on another host, Pongamia globosa. But Fusicladium pongamiae was actually described in India on Pongamia glabra, which is a synonym of P. pinnata, and hence on the same host as Asperisporium pongamiae-pinnatae. Pedrocrousiella pongamiae clusters in a clade containing Distocercospora, Clypeosphaerella, and “Pseudocercospora” nephrolepidicola, a species which is not congeneric with Pseudocercospora. Phylogenetically, Pedrocrousiella is distant from the Asperisporium s. str. clade (type species A. caricae), which is more closely related to Amycosphaerella, Pseudocercosporella, Distomycovellosiella and Nothopassalora. Citation: Rajeshkumar KC, Braun U, Groenewald JZ, Lad SS, Ashtekar N, Fatima S, Anand G (2021). Phylogenetic placement and reassessment of Asperisporium pongamiae as Pedrocrousiella pongamiae gen. et comb. nov. (Mycosphaerellaceae). Fungal Systematics and Evolution 7: 165–176. doi: 10.3114/fuse.2021.07.08
format Online
Article
Text
id pubmed-8166208
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Westerdijk Fungal Biodiversity Institute
record_format MEDLINE/PubMed
spelling pubmed-81662082021-06-10 Phylogenetic placement and reassessment of Asperisporium pongamiae as Pedrocrousiella pongamiae gen. et comb. nov. (Mycosphaerellaceae) Rajeshkumar, K.C. Braun, U. Groenewald, J.Z. Lad, S.S. Ashtekar, N. Fatima, S. Anand, G. Fungal Syst Evol Articles The leaf spot disease of Pongamia pinnata caused by an asperisporium-like asexual morph, which is usually referred to as Asperisporium pongamiae, is quite common during monsoon seasons in India. Phylogenetic analyses, based on LSU and rpb2 sequence data, and blast searches using ITS sequence data, revealed that this ascomycete forms a lineage within Mycosphaerellaceae distant from all other generic lineages. Pedrocrousiella gen. nov., with P. pongamiae comb. nov., based on Fusicladium pongamiae (≡ A. pongamiae), as type species is introduced for this lineage. This species has been considered the asexual morph of Mycosphaerella pongamiae (≡ Stigmatea pongamiae). However, this connection is unproven and was just based on the occasional association of the two taxa in some collections. Several attempts to induce the formation of a sexual morph in culture failed, therefore the putative connection between these morphs could not be confirmed. Asperisporium pongamiae-pinnatae is reduced to synonymy with P. pongamiae. Asperisporium pongamiae-pinnatae was introduced because of the wrong assumption that F. pongamiae had been described on another host, Pongamia globosa. But Fusicladium pongamiae was actually described in India on Pongamia glabra, which is a synonym of P. pinnata, and hence on the same host as Asperisporium pongamiae-pinnatae. Pedrocrousiella pongamiae clusters in a clade containing Distocercospora, Clypeosphaerella, and “Pseudocercospora” nephrolepidicola, a species which is not congeneric with Pseudocercospora. Phylogenetically, Pedrocrousiella is distant from the Asperisporium s. str. clade (type species A. caricae), which is more closely related to Amycosphaerella, Pseudocercosporella, Distomycovellosiella and Nothopassalora. Citation: Rajeshkumar KC, Braun U, Groenewald JZ, Lad SS, Ashtekar N, Fatima S, Anand G (2021). Phylogenetic placement and reassessment of Asperisporium pongamiae as Pedrocrousiella pongamiae gen. et comb. nov. (Mycosphaerellaceae). Fungal Systematics and Evolution 7: 165–176. doi: 10.3114/fuse.2021.07.08 Westerdijk Fungal Biodiversity Institute 2021-02-08 2021-06 /pmc/articles/PMC8166208/ /pubmed/34124622 http://dx.doi.org/10.3114/fuse.2021.07.08 Text en © 2021 Westerdijk Fungal Biodiversity Institute https://creativecommons.org/licenses/by-nc-nd/4.0/Fungal Systematics and Evolution is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License
spellingShingle Articles
Rajeshkumar, K.C.
Braun, U.
Groenewald, J.Z.
Lad, S.S.
Ashtekar, N.
Fatima, S.
Anand, G.
Phylogenetic placement and reassessment of Asperisporium pongamiae as Pedrocrousiella pongamiae gen. et comb. nov. (Mycosphaerellaceae)
title Phylogenetic placement and reassessment of Asperisporium pongamiae as Pedrocrousiella pongamiae gen. et comb. nov. (Mycosphaerellaceae)
title_full Phylogenetic placement and reassessment of Asperisporium pongamiae as Pedrocrousiella pongamiae gen. et comb. nov. (Mycosphaerellaceae)
title_fullStr Phylogenetic placement and reassessment of Asperisporium pongamiae as Pedrocrousiella pongamiae gen. et comb. nov. (Mycosphaerellaceae)
title_full_unstemmed Phylogenetic placement and reassessment of Asperisporium pongamiae as Pedrocrousiella pongamiae gen. et comb. nov. (Mycosphaerellaceae)
title_short Phylogenetic placement and reassessment of Asperisporium pongamiae as Pedrocrousiella pongamiae gen. et comb. nov. (Mycosphaerellaceae)
title_sort phylogenetic placement and reassessment of asperisporium pongamiae as pedrocrousiella pongamiae gen. et comb. nov. (mycosphaerellaceae)
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8166208/
https://www.ncbi.nlm.nih.gov/pubmed/34124622
http://dx.doi.org/10.3114/fuse.2021.07.08
work_keys_str_mv AT rajeshkumarkc phylogeneticplacementandreassessmentofasperisporiumpongamiaeaspedrocrousiellapongamiaegenetcombnovmycosphaerellaceae
AT braunu phylogeneticplacementandreassessmentofasperisporiumpongamiaeaspedrocrousiellapongamiaegenetcombnovmycosphaerellaceae
AT groenewaldjz phylogeneticplacementandreassessmentofasperisporiumpongamiaeaspedrocrousiellapongamiaegenetcombnovmycosphaerellaceae
AT ladss phylogeneticplacementandreassessmentofasperisporiumpongamiaeaspedrocrousiellapongamiaegenetcombnovmycosphaerellaceae
AT ashtekarn phylogeneticplacementandreassessmentofasperisporiumpongamiaeaspedrocrousiellapongamiaegenetcombnovmycosphaerellaceae
AT fatimas phylogeneticplacementandreassessmentofasperisporiumpongamiaeaspedrocrousiellapongamiaegenetcombnovmycosphaerellaceae
AT anandg phylogeneticplacementandreassessmentofasperisporiumpongamiaeaspedrocrousiellapongamiaegenetcombnovmycosphaerellaceae