Abstract
This study introduces a new Penicillium species isolated from soil in Yavatmal, India. Penicillium sanjayi sp. nov. is classified in Penicillium section Citrina. The new species is delimited using phenotypic characters and sequences of the nuclear ribosomal internal transcribed spacer (ITS) rDNA regions, partial beta-tubulin (BenA), calmodulin (CaM), and RNA polymerase II second largest subunit (RPB2) region. Phylogenetic analyses consistently resolved the new species in a well-delineated clade with its close relative P. vascosobrinhoanum (originally published as P. vascosobrinhous), distinct from all other series of section Citrina. As a result, we introduce the series Vascosobrinhoana for this unique lineage. Key distinguishing characteristics such as greyish ruby to ruby centre of colonies (obverse) on malt extract agar (MEA), presence of cream colour sclerotia on oatmeal agar (OA), growth rates on standardised media, growth at 30 °C but lack of growth at 37 °C, additional microscopic characters such as solitary or rarely with a subterminal branch other than predominant monoverticillate penicilli, and conspicuously roughened to verruculose conidial ornamentation distinguish the new species P. sanjayi from other monoverticillate section Citrina species.
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Data availability
All sequence data generated for this study can be accessed via GenBank. Taxonomy details are deposited in MycoBank (nomenclature is verified with Curator).
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Acknowledgements
Kunhiraman C. Rajeshkumar thanks SERB, Department of Science and Technology, Government of India, for financial support under the project CRG/2020/000668. RKC also thanks Dr. P. K. Dhakephalkar, Director, MACS Agharkar Research Institute, Pune, for providing laboratory facilities and motivation in our work. Nikhil Ashtekar thanks CSIR-HRDG, INDIA, for the financial support under SRF fellowship (09/0670(11172)/2021-EMR-I).
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This research was funded by the SERB, DST, India (as mentioned in metadata and Acknowledgements already).
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Conceptualization: Rajeshkumar KC. Methodology: Rajeshkumar KC, Cobus Visagie, Neriman Yilmaz, Nikhil Ashtekar. Formal analysis and investigation: Cobus Visagie, Neriman Yilmaz (final tree analyses), Rajeshkumar KC, and Nikhil Ashtekar (collection, data, lab work, taxonomy, preliminary analyses). Writing—original draft preparation: Rajeshkumar KC, Cobus Visagie, Nikhil Ashtekar, Neriman Yilmaz. Writing—review and editing: Rajeshkumar KC, Cobus Visagie, Neriman Yilmaz. Funding acquisition: Rajeshkumar KC. Resources: Rajeshkumar KC. Supervision: Rajeshkumar KC, Cobus Visagie.
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Ashtekar, N., Rajeshkumar, K.C., Yilmaz, N. et al. A new Penicillium section Citrina species and series from India. Mycol Progress 21, 42 (2022). https://doi.org/10.1007/s11557-022-01802-3
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DOI: https://doi.org/10.1007/s11557-022-01802-3