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Ophiocordyceps flavida sp. nov. (Ophiocordycipitaceae), a new species from Thailand associated with Pseudogibellula formicarum (Cordycipitaceae), and their bioactive secondary metabolites
Mongkolsamrit, Suchada Noisripoom, Wasana Pumiputikul, Siraphop Boonlarppradab, Chollaratt Samson, Robert A. Becker, Kevin Luangsa-Ard, Janet Jennifer
Mongkolsamrit, Suchada
Noisripoom, Wasana
Pumiputikul, Siraphop
Boonlarppradab, Chollaratt
Samson, Robert A.
Becker, Kevin
Luangsa-Ard, Janet Jennifer
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2021-04-01
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Abstract
During a diversity study of entomopathogenic fungi in an agricultural ecosystem, two fungi were collected, isolated, and identified based on molecular phylogenetic analyses of three nuclear loci (LSU, TEF1, and RPB1) combined with morphological data. In this study, one novel species is described, Ophiocordyceps flavida, and a new record of Pseudogibellula formicarum for Thailand. Ophiocordyceps flavida morphologically resembles the Hirsutella anamorph of Ophiocordyceps pruinosa by having a mononematous character of the conidiophores and the same insect host (Hemiptera: Cicadellidae). Pseudogibellula formicarum is found to occur simultaneously with O. flavida, producing white conidiophores on the host. Additionally, secondary metabolites of both fungi were investigated and the major compound in O. flavida was identified as 2-[2-(4-chlorophenyl)ethyl]-2-(1,1-dimethylethyl)-oxirane. Pseudogibellula formicarum from Ghana and Thailand produces 6-methoxy-1H-indole-3-carbonitrile as a main component. These compounds are known from chemical synthesis or as products of biotransformation, respectively. However, they were obtained in our study as genuine fungal metabolites for the first time and may even constitute chemotaxonomic markers for the respective species
Citation
Mycol Progress 20, 477–492 (2021). https://doi.org/10.1007/s11557-021-01683-y.
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en
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1617416X
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18618952
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National Center for Genetic Engineering and Biotechnology
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Attribution 4.0 International