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<p>The unique flora of Antarctica, dominated by cryptogams such as bryophytes, 22 face significant challenges for survival due to harsh environmental conditions. In this study, we explored the potential of <i>in vitro</i> cultivation as an <i>ex-situ</i> conservation 24 strategy for six Antarctic moss species, including <i>Bartramia patens</i>, <i>Bryum amblyodon</i>, 25 <i>Hymenoloma crispulum</i>, <i>Polytrichastrum alpinum</i>, <i>Funaria hygrometrica</i>, and <i>Polytrichum juniperinum</i>. To evaluate growth and biomass production, sporophytes were collected, sterilized, and cultured on different media over a 4-week period. Our results showed significant variations in growth patterns among the species and culture media. Notably, the BCD medium demonstrated promising results for <i>B. patens</i>, <i>B. amblyodon</i>, <i>F. hygrometrica</i>, and <i>P. juniperinum</i>, while media supplemented with sucrose and ammonium nitrate facilitated growth in <i>H. crispulum</i> and <i>P. alpinum</i>. These findings provide valuable insights into optimal culture conditions for <i>ex-situ</i> preservation of Antarctic mosses and highlight the potential of <i>in vitro</i> cultivation as a conservation tool.</p>

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Improving in vitro culture conditions for ex-situ conservation of antarctic mosses

  • 期刊论文

  • 发表日期：

    2025年4月23日

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  • Maria Victória Magalhães de Vargas,
  • Guilherme Afonso Kessler de Andrade,
  • Sara Navarrete Bohi Goulart,
  • Bruna Mota Bernardes,
  • Filipe de Carvalho Victoria

摘要

The unique flora of Antarctica, dominated by cryptogams such as bryophytes, 22 face significant challenges for survival due to harsh environmental conditions. In this study, we explored the potential of in vitro cultivation as an ex-situ conservation 24 strategy for six Antarctic moss species, including Bartramia patens, Bryum amblyodon, 25 Hymenoloma crispulum, Polytrichastrum alpinum, Funaria hygrometrica, and Polytrichum juniperinum. To evaluate growth and biomass production, sporophytes were collected, sterilized, and cultured on different media over a 4-week period. Our results showed significant variations in growth patterns among the species and culture media. Notably, the BCD medium demonstrated promising results for B. patens, B. amblyodon, F. hygrometrica, and P. juniperinum, while media supplemented with sucrose and ammonium nitrate facilitated growth in H. crispulum and P. alpinum. These findings provide valuable insights into optimal culture conditions for ex-situ preservation of Antarctic mosses and highlight the potential of in vitro cultivation as a conservation tool.