Abstract
Diversispora cerifera and Diversispora succinacia are new arbuscular mycorrhizal fungal species that have been isolated and propagated from spores extracted from rhizosphere soils of native vegetation that had naturally established from seeds on a nickel mine tailing test basin in New Caledonia. Interestingly, these species were not recorded from ultramafic soils of maquis vegetation endemic to New Caledonia surrounding the tailing basin. In greenhouse trap and single-species cultures, the fungi produced numerous spores, which were formed terminally or intercalary on subtending hyphae. Spores of D. cerifera are white-yellow with a waxy appearance and 70–100–120 µm in diameter; spores of D. succinacia are translucent, amber in color, and 60–80–110 µm in diameter; both species have three spore wall layers. A phylogenetic analysis placed D. cerifera in a clade sister to D. succinacia. The same analysis showed that the sister species of D. succinacia is D. sabulosa.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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This work was supported by Prony Resources New Caledonia. Author T. C. has received research support from Company Prony Resources New Caledonia.
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Thomas Crossay, Stephane McCoy, Leslie Maï-van’y, and Hamid Amir. The first draft of the manuscript was written by Thomas Crossay, Stephane McCoy, and Leslie Maï-van’y, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Crossay, T., McCoy, S., Maï-van’y, L. et al. Two new species of Diversispora (arbuscular mycorrhizal fungi; Glomeromycota) colonizing roots of endemic shrubs on nickel mine tailings in New Caledonia. Mycol Progress 23, 21 (2024). https://doi.org/10.1007/s11557-024-01961-5
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DOI: https://doi.org/10.1007/s11557-024-01961-5