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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Effects of zinc, iron, cobalt, and manganese on Fusarium moniliforme NRRL 13616 growth and fusarin C biosynthesis in submerged cultures.</title><author><name sortKey="Jackson, M A" sort="Jackson, M A" uniqKey="Jackson M" first="M A" last="Jackson">M A Jackson</name></author><author><name sortKey="Slininger, P J" sort="Slininger, P J" uniqKey="Slininger P" first="P J" last="Slininger">P J Slininger</name></author><author><name sortKey="Bothast, R J" sort="Bothast, R J" uniqKey="Bothast R" first="R J" last="Bothast">R J Bothast</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">2930169</idno><idno type="pmc">184174</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC184174</idno><idno type="RBID">PMC:184174</idno><date when="1989">1989</date><idno type="wicri:Area/Pmc/Corpus">000152</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000152</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Effects of zinc, iron, cobalt, and manganese on Fusarium moniliforme NRRL 13616 growth and fusarin C biosynthesis in submerged cultures.</title><author><name sortKey="Jackson, M A" sort="Jackson, M A" uniqKey="Jackson M" first="M A" last="Jackson">M A Jackson</name></author><author><name sortKey="Slininger, P J" sort="Slininger, P J" uniqKey="Slininger P" first="P J" last="Slininger">P J Slininger</name></author><author><name sortKey="Bothast, R J" sort="Bothast, R J" uniqKey="Bothast R" first="R J" last="Bothast">R J Bothast</name></author></analytic><series><title level="j">Applied and Environmental Microbiology</title><idno type="ISSN">0099-2240</idno><idno type="eISSN">1098-5336</idno><imprint><date when="1989">1989</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The influence of zinc, iron, cobalt, and manganese on submerged cultures of Fusarium moniliforme NRRL 13616 was assessed by measuring dry weight accumulation, fusarin C biosynthesis, and ammonia assimilation. Shake flask cultures were grown in a nitrogen-limited defined medium supplemented with various combinations of metal ions according to partial-factorial experimental designs. Zinc (26 to 3,200 ppb [26 to 3,200 ng/ml]) inhibited fusarin C biosynthesis, increased dry weight accumulation, and increased ammonia assimilation. Carbohydrate was found to be the principal component of the increased dry weight in zinc-supplemented cultures. Zinc-deficient cultures synthesized more lipid and lipidlike compounds, such as fusarin C, than did zinc-supplemented cultures. Microscopic examination showed that zinc-deficient hyphae contained numerous lipid globules which were not present in zinc-supplemented cultures. Addition of zinc (3,200 ppb) to 2- and 4-day-old cultures inhibited further fusarin C biosynthesis but did not stimulate additional dry weight accumulation. Iron (10.0 ppm) and cobalt (9.0 ppm) did not affect fusarin C biosynthesis or dry weight accumulation. Manganese (5.1 ppm) did not affect dry weight accumulation but did increase fusarin C biosynthesis in the absence of zinc. Maximum fusarin C levels, 32.3 micrograms/mg (dry weight), were produced when cultures were supplied manganese, whereas minimum fusarin C levels, 0.07 micrograms/mg (dry weight), were produced when zinc, iron, cobalt, and manganese were supplied. These results suggest a multifunctional role for zinc in affecting F. moniliforme metabolism.</p><sec sec-type="scanned-figures"><title>Images</title><fig id="F1"><graphic xlink:href="aem00096-0119-a" xlink:role="653"></graphic></fig></sec></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Appl Environ Microbiol</journal-id><journal-title>Applied and Environmental Microbiology</journal-title><issn pub-type="ppub">0099-2240</issn><issn pub-type="epub">1098-5336</issn></journal-meta><article-meta><article-id pub-id-type="pmid">2930169</article-id><article-id pub-id-type="pmc">184174</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title>Effects of zinc, iron, cobalt, and manganese on Fusarium moniliforme NRRL 13616 growth and fusarin C biosynthesis in submerged cultures.</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Jackson</surname><given-names>M A</given-names></name></contrib><contrib contrib-type="author"><name><surname>Slininger</surname><given-names>P J</given-names></name></contrib><contrib contrib-type="author"><name><surname>Bothast</surname><given-names>R J</given-names></name></contrib></contrib-group><aff>Northern Regional Research Center, U.S. Department of Agriculture, Peoria, Illinois 61604.</aff><pub-date pub-type="ppub"><month>3</month><year>1989</year></pub-date><volume>55</volume><issue>3</issue><fpage>649</fpage><lpage>655</lpage><abstract><p>The influence of zinc, iron, cobalt, and manganese on submerged cultures of Fusarium moniliforme NRRL 13616 was assessed by measuring dry weight accumulation, fusarin C biosynthesis, and ammonia assimilation. Shake flask cultures were grown in a nitrogen-limited defined medium supplemented with various combinations of metal ions according to partial-factorial experimental designs. Zinc (26 to 3,200 ppb [26 to 3,200 ng/ml]) inhibited fusarin C biosynthesis, increased dry weight accumulation, and increased ammonia assimilation. Carbohydrate was found to be the principal component of the increased dry weight in zinc-supplemented cultures. Zinc-deficient cultures synthesized more lipid and lipidlike compounds, such as fusarin C, than did zinc-supplemented cultures. Microscopic examination showed that zinc-deficient hyphae contained numerous lipid globules which were not present in zinc-supplemented cultures. Addition of zinc (3,200 ppb) to 2- and 4-day-old cultures inhibited further fusarin C biosynthesis but did not stimulate additional dry weight accumulation. Iron (10.0 ppm) and cobalt (9.0 ppm) did not affect fusarin C biosynthesis or dry weight accumulation. Manganese (5.1 ppm) did not affect dry weight accumulation but did increase fusarin C biosynthesis in the absence of zinc. Maximum fusarin C levels, 32.3 micrograms/mg (dry weight), were produced when cultures were supplied manganese, whereas minimum fusarin C levels, 0.07 micrograms/mg (dry weight), were produced when zinc, iron, cobalt, and manganese were supplied. These results suggest a multifunctional role for zinc in affecting F. moniliforme metabolism.</p><sec sec-type="scanned-figures"><title>Images</title><fig id="F1"><graphic xlink:href="aem00096-0119-a" xlink:role="653"></graphic></fig></sec></abstract></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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