Isaria macroscyticola, a rare entomopathogenic species on Cydnidae (Hemiptera), is a synnematous form and synonym of Purpureocillium lilacinum (Ophiocordycipitaceae)

Yamamoto, Kazuhito; Yasuda, Mamoru; Ohmae, Muneyuki; Sato, Hiroki; Orihara, Takamichi

doi:10.1016/j.myc.2020.03.002

Cited by 5 publications

(1 citation statement)

References 19 publications

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“…P. lilacinum isolates are sometimes misidentified to Isaria spp. as the anamorphs of both groups are similar (Yamamoto et al 2020). Therefore, use of genotypic identification tools should prove an effective solution for the correct identification.…”

Section: Introductionmentioning

confidence: 99%

Morphological and molecular identification of four Purpureocillium isolates and evaluating their efficacy against the sweet potato whitefly, Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae)

Sun

Ali

2021

Egypt J Biol Pest Control

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Background Entomopathogenic fungi are widely distributed and well described within the fungal kingdom. This study reports the isolation, characterization, and virulence of 4 Purpureocillium lilacinum isolates against the sweet potato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae). Results Four strains of Purpureocillium lilacinum (XI-1, XI-4, XI-5, and J27) were isolated from soil samples from different localities of China. The morphological studies observed that four strains showed essentially the same morphological characteristics. After 7 days of cultivation, the colonies were purple, round, and bulged. Conidia were single-celled, oval to spindle-shaped, chain-like, and the spore size was about 2.0–2.3 × 3.1–4.0 μm. The genome-based identification results showed that ITS sequences of XI-1 (GenBank accession # MW386433), XI-4 (GenBank accession # MW386434), XI-5 (GenBank accession # MW386435), and J27 (GenBank accession # MW386436) were similar to another P. lilacinum. The newly identified strains of P. lilacinum proved pathogenicity to B. tabaci under laboratory conditions. In addition, the P. lilacinum isolate XI-5 was the most virulent one against different nymphal instars of whitefly having median lethal concentration (LC50) values of 4.99 × 106, 4.82 × 105, and 2.85 × 106 conidia/ml, respectively, 7 days post application. Conclusion The newly isolated strains of P. lilacinum can be developed as a potential biopesticide against the whitefly although extensive field bioassays as well as development of proper formulation are still required.

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Section: Introductionmentioning

confidence: 99%

Morphological and molecular identification of four Purpureocillium isolates and evaluating their efficacy against the sweet potato whitefly, Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae)

Sun

Ali

2021

Egypt J Biol Pest Control

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Polycephalomycetaceae, a new family of clavicipitoid fungi segregates from Ophiocordycipitaceae

et al. 2023

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Clavicipitoid fungi comprise three families, namely Clavicipitaceae, Cordycipitaceae, and Ophiocordycipitaceae. They are found worldwide and are specialized pathogens of invertebrate, plant and fungal hosts. Over the last decade, morphology-and phylogeny-based studies on clavicipitoid fungi have increased. The latter have revealed that Polycephalomyces, Perennicordyceps and Pleurocordyceps consistently cluster together. These genera are currently considered as members of Ophiocordycipitaceae. Nonetheless, information with regard to their diversity and ecology remains sparse. To fill this gap, we collected 29 fresh specimens from insect and fungal substrates from tropical and subtropical evergreen forests in Thailand and southwestern China. We performed detailed morphological analyses and constructed photoplates for all isolated fungi. We used extensive taxon sampling and a dataset comprising internal transcribed spacer gene region (ITS), small subunit ribosomal RNA gene region (SSU), large subunit rRNA gene region (LSU), translation elongation factor 1-alpha gene region (TEF-1α), RNA polymerase II largest subunit gene region (RPB1) and RNA polymerase II second largest subunit (RPB2) to infer order-, family and genus-level phylogenetic trees. Based on these biphasic analyses, we segregate Polycephalomyces, Perennicordyceps, and Pleurocordyceps from Ophiocordycipitaceae and introduce the new family Polycephalomycetaceae to accomodate these three genera. The majority of species in this family have a vast range of insect and fungal hosts. The sexual morph of Polycephalomycetaceae has stromatic ascomata, long stipes, thick peridium, and cylindrical secondary spores. The asexual morph is characterized by colonies on the host surface or synnemata with stipes on the host, one or two types of phialides, and cylindrical to fusiform conidia. We expand the number of taxa in the new family by introducing seven new species (Polycephalomyces albiramus, Perennicordyceps lutea, Pleurocordyceps parvicapitata, Pleurocordyceps lanceolatus, Pleurocordyceps nutansis, Pleurocordyceps heilongtanensis, Pleurocordyceps vitellina), nine new hosts, and one new combination (Perennicordyceps elaphomyceticola). The results herein hint at a high level of diversity for Polycephalomycetaceae. Future investigations focusing on obtaining additional collections and specimens from different geographical areas would help to reveal not only the extent of the group's diversity, but also resolve its deeper phylogenetic placement.

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Revealing the non-overlapping characteristics between original centers and genetic diversity of Purpureocillium lilacinum

et al. 2022

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Isaria macroscyticola, a rare entomopathogenic species on Cydnidae (Hemiptera), is a synnematous form and synonym of Purpureocillium lilacinum (Ophiocordycipitaceae)

Cited by 5 publications

References 19 publications

Morphological and molecular identification of four Purpureocillium isolates and evaluating their efficacy against the sweet potato whitefly, Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae)

Morphological and molecular identification of four Purpureocillium isolates and evaluating their efficacy against the sweet potato whitefly, Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae)

Polycephalomycetaceae, a new family of clavicipitoid fungi segregates from Ophiocordycipitaceae

Revealing the non-overlapping characteristics between original centers and genetic diversity of Purpureocillium lilacinum

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