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Volume 168, Issue 3

as endophyte and pathogen Open Access

Abstract

is a common species of fungus frequently isolated from plants as both an endophyte and a pathogen. Although the current definition of rests on a foundation of morphological, genetic and genomic analyses, doubts persist regarding the scope of within the genus due to the varied symbiotic interactions and wide host range observed in these fungi. These doubts may be due in large part to the history of unstable taxonomy in , based on limited morphological characters for species delimitation and host specificity associated with toxins encoded by genes carried on conditionally dispensable chromosomes. This review explores the history of taxonomy, focusing in particular on the use of nutritional mode and host associations in species delimitation, with the goal of evaluating as it currently stands based on taxonomic best practice. Given the recombination detected among isolates of , different symbiotic associations in this species should not be considered phylogenetically informative.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): fungi , species delimitation , symbiosis , systematics and taxonomy
Funding
This study was supported by the:
  • Graduate School, University of Minnesota
    • Principle Award Recipient: MaraDeMers
© 2022 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License. This article was made open access via a Publish and Read agreement between the Microbiology Society and the corresponding author’s institution.
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2022-03-29
2024-04-24
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Alternaria alternata as endophyte and pathogen
Microbiology 168, 001153 (2022); https://doi.org/10.1099/mic.0.001153
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