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Schuster C, Baró Robaina Y, Ben Gharsa H, Bobushova S, Manfrino RG, Gutierrez AC, Lopez Lastra CC, Doolotkeldieva T, Leclerque A. Species Discrimination within the Metarhizium PARB Clade: Ribosomal Intergenic Spacer (rIGS)-Based Diagnostic PCR and Single Marker Taxonomy. J Fungi (Basel) 2023; 9:996. [PMID: 37888252 PMCID: PMC10607842 DOI: 10.3390/jof9100996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 10/28/2023] Open
Abstract
(1) Background: The entomopathogenic fungus Metarhizium anisopliae sensu lato forms a species complex, comprising a tight cluster made up of four species, namely M. anisopliae sensu stricto, M. pinghaense, M. robertsii and M. brunneum. Unambiguous species delineation within this "PARB clade" that enables both the taxonomic assignment of new isolates and the identification of potentially new species is highly solicited. (2) Methods: Species-discriminating primer pairs targeting the ribosomal intergenic spacer (rIGS) sequence were designed and a diagnostic PCR protocol established. A partial rIGS sequence, referred to as rIGS-ID800, was introduced as a molecular taxonomic marker for PARB species delineation. (3) Results: PARB species from a validation strain set not implied in primer design were clearly discriminated using the diagnostic PCR protocol developed. Using rIGS-ID800 as a single sequence taxonomic marker gave rise to a higher resolution and statistically better supported delineation of PARB clade species. (4) Conclusions: Reliable species discrimination within the Metarhizium PARB clade is possible through both sequencing-independent diagnostic PCR and sequencing-dependent single marker comparison, both based on the rIGS marker.
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Affiliation(s)
- Christina Schuster
- Department of Biology, Technische Universität Darmstadt (TUDa), Schnittspahnstraße 10, 64287 Darmstadt, Germany; (Y.B.R.)
| | - Yamilé Baró Robaina
- Department of Biology, Technische Universität Darmstadt (TUDa), Schnittspahnstraße 10, 64287 Darmstadt, Germany; (Y.B.R.)
- Plant Health Research Institute (INISAV), 110 Str. 514, Havana 11600, Cuba
| | - Haifa Ben Gharsa
- Department of Biology, Technische Universität Darmstadt (TUDa), Schnittspahnstraße 10, 64287 Darmstadt, Germany; (Y.B.R.)
| | - Saikal Bobushova
- Faculty of Agriculture, Kyrgyz-Turkish Manas University, 56 Chyngyz Aitmatov Avenue, Bishkek 720038, Kyrgyzstan
| | - Romina Guadalupe Manfrino
- Department of Biology, Technische Universität Darmstadt (TUDa), Schnittspahnstraße 10, 64287 Darmstadt, Germany; (Y.B.R.)
- Centro de Estudios Parasitólogicos y de Vectores (CEPAVE), CONICET-Consejo Nacional de Investigaciones Científicas y Técnicas, UNLP-Universidad Nacional de La Plata, La Plata 1900, Argentina
| | - Alejandra C. Gutierrez
- Centro de Estudios Parasitólogicos y de Vectores (CEPAVE), CONICET-Consejo Nacional de Investigaciones Científicas y Técnicas, UNLP-Universidad Nacional de La Plata, La Plata 1900, Argentina
| | - Claudia C. Lopez Lastra
- Centro de Estudios Parasitólogicos y de Vectores (CEPAVE), CONICET-Consejo Nacional de Investigaciones Científicas y Técnicas, UNLP-Universidad Nacional de La Plata, La Plata 1900, Argentina
| | - Tinatin Doolotkeldieva
- Faculty of Agriculture, Kyrgyz-Turkish Manas University, 56 Chyngyz Aitmatov Avenue, Bishkek 720038, Kyrgyzstan
| | - Andreas Leclerque
- Department of Biology, Technische Universität Darmstadt (TUDa), Schnittspahnstraße 10, 64287 Darmstadt, Germany; (Y.B.R.)
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