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<title>Antartic Microbes</title>
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<h1><a href="index.html">Antartic Microbes</a></h1>
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<div class="text-content paper">
<h3>Isolation and biological activities of an endophytic <i>Mortierella alpina</i> strain from the Antarctic moss <i>Schistidium antarctici</i></h3>
<p class="author">Itamar S. Melo , Suikinai N. Santos, Luiz H. Rosa, Marcia M. Parma, Leonardo J. Silva, Sonia C. N. Queiroz and Vivian H. Pellizari</p>
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<p class="pretext">Abstract</p>
<span class="captalized-text">T</span>he Antarctic endophytic fungus (strain ITA1CCMA 952) was isolated from the moss <i>Schistidium antarctici</i> found in Admiralty Bay, King George Island, Antarctica. Strain ITA1 CCMA 952 was assigned to the specie <i>Mortierella alpina</i> by phylogenetic analysis based on 18S rRNA gene sequences. This strain produces high levels of polyunsaturated fatty acids (PUFAs), including y(gamma) linolenic acid and arachidonic acid, which when combined represents 48.3 % of the total fatty acid content. Fungal extracts demonstrated strong antioxidant activity with the EC50 value of 48.7 μg mL−1 and also a strong antibacterial activity, mainly against the following bacteria: <i>Escherichia coli</i>, with a MIC of 26.9 μg mL−1 and <i>Pseudomonas aeruginosa and <i>Enterococcus faecalis</i>, both with a MIC of 107 μg mL−1.
A GC–MS analysis of the chloroform fraction obtained from the crude extract revealed thepresence of potential antimicrobials (Pyrrolo[1,2a]pyrazine1,4dione, hexahydro3(2 methylpropyl) and Pyrrolo[1,2a]pyrazine1,4dione, hexahydro3(phenylmethyl)) as the major compounds. Therefore, the M. alpine strain ITA1CCMA 952 is a promising fungus for the biotechnological production of antibiotics, antioxidant substances and PUFAs. This study highlights the need for more research in extreme environments, such as Antarctica.
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<p>Fungi</p>
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<p>Moss</p>
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<p>Instituto Oceanográfico</p>
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