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Pleopeltis lepidopteris Langsd. & Fisch. (Polypodiaceae), an endemic fern from Brazilian “restingas”: viability of spores under different storage conditions

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Abstract

Spores of Pleopeltis lepidopteris (Polypodiaceae) were stored under different temperatures. Samples of spores were stored at room temperature, under refrigeration at 7 ± 1 °C (1 and 8 months), and in liquid nitrogen (1 and 8 months). After storage, spore viability and gametophyte development were analyzed. When stored at room temperature, spores of P. lepidopteris quickly lost viability after storage for 1 month and died after 8 months. When spores were stored dry at 7 °C, they showed higher percentages of germination, but there was a significant decrease in viabilities after 8 months of storage. In contrast, when stored in liquid nitrogen, spores survived and presented a high percentage of germination. Moreover, gametophyte development was accelerated in the cryopreserved spores relative to those grown from freshly collected spores. Thus, for this endemic species of the Brazilian sandbank, cryogenic storage of spores is an effective method for “ex situ” conservation in gene banks.

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Acknowledgments

The authors thank the graduate program in Fungi, Algae and Plants (FAP) of the Departament of Botany of the Federal University of Santa Catarian, Brazil. This study was supported in part by the Coordination of Improvement of Higher Education Personal (CAPES). The authors thank CAPES for providing a scholarship to Elisa Poltronieri Filipin.

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Correspondence to Áurea Maria Randi.

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Filipin, E.P., Simioni, C., Schmidt, É.C. et al. Pleopeltis lepidopteris Langsd. & Fisch. (Polypodiaceae), an endemic fern from Brazilian “restingas”: viability of spores under different storage conditions. Braz. J. Bot 40, 59–65 (2017). https://doi.org/10.1007/s40415-016-0332-5

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  • DOI: https://doi.org/10.1007/s40415-016-0332-5

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