L-asparaginase by filamentous fungi and yeasts from lichens and soils across maritime Antarctic islands.

Authors

Averlane Vieira da Silva, Bárbara Emanuelle Fernandes Ferro, Vanessa Daiany Vieira Medeiros, Valdilene Canazart Dos Santos, Maria Nicolle Pereira da Silva, Cledna Kaline Dos Santos Duarte, Aline Cavalcanti de Queiroz, Magna Suzana Alexandre Moreira, Luiz Henrique Rosa, Alysson Wagner Fernandes Duarte

Published in

Extremophiles : life under extreme conditions. Volume 30. Issue 1. Aug 01, 2026. Epub Aug 01, 2026.

Abstract

This study aimed to evaluate L-asparaginase (L-ASNase) production by fungi isolated from soils across different Antarctic islands. Out of 138 isolates, 33 filamentous fungi and 5 yeasts exhibited enzymatic activity in solid culture media. Filamentous fungi were identified by sequencing the Internal Transcribed Spacer (ITS) region, while yeasts were identified using the D1/D2 domains of the 26 S rDNA gene. The blue filamentous fungus Antarctomyces F13.CR.LASP exhibited a maximum L-ASNase productivity of 0.76 U/L. Regarding the yeasts, the isolate Vishniacozyma victoriae G.L11 reached a productivity of 0.17 U/L, while corresponding values for glutaminase and urease were 0.11 and 0.06 U/L, respectively. Furthermore, V. victoriae G.L11 was capable of producing the enzyme using different low-cost substrates, particularly pineapple peel waste, which yielded 5.17 U/L. In this scenario, future optimization could further enhance L-asparaginase production levels by these fungi, providing valuable insights into the biotechnological potential of Antarctic fungi.

PMID:
42542517
Bibliographic data and abstract were imported from PubMed on 02 Aug 2026.

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