| Changes in fatty acid composition of Neurospora crassa accompany sexual development and ascospore germination. | |
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MedLine Citation:
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PMID: 9695905 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Fatty acid composition was determined during several stages of sexual development in Neurospora crassa. Triacylglycerol was the predominant acyl lipid in cultures undergoing sexual development. The absolute amounts of triacylglycerol in fertilized cultures varied over time, in contrast to control (unfertilized or mock-fertilized) cultures, in which the amount of triacylglycerol decreased linearly with age. In cultures competent to undergo sexual development, alpha-linoleate was the predominant fatty acid, ranging from 53 to 65% of the total fatty acid mass. alpha-Linolenate was 3% or less of the total fatty acid, in marked contrast to the much higher levels (10-35%) typically reported for vegetative cultures. In fertilized cultures, a slightly higher mass ratio of oleate was also observed. This difference was due to the developing asci: in developing asci and mature ascospores, oleate replaced alpha-linoleate as the predominant fatty acid (45 to 50% of the total). In germinating ascospores, the fatty acid composition approached that of vegetative cultures 6 h after inducing germination by heat activation. These results show that the fatty acid composition of sexual tissues of Neurospora differs substantially from the composition of asexual tissues, and that extensive changes in fatty acid composition correlate with several events in the sexual stage of development. |
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Authors:
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M Goodrich-Tanrikulu; K Howe; A Stafford; M A Nelson |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Microbiology (Reading, England) Volume: 144 ( Pt 7) ISSN: 1350-0872 ISO Abbreviation: Microbiology (Reading, Engl.) Publication Date: 1998 Jul |
Date Detail:
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Created Date: 1998-09-23 Completed Date: 1998-09-23 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9430468 Medline TA: Microbiology Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 1713-20 Citation Subset: IM |
Affiliation:
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United States Department of Agriculture, Western Regional Research Center, Albany, CA 94710, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Fatty Acids
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analysis*,
metabolism Hot Temperature Linoleic Acid / analysis, metabolism Neurospora crassa / chemistry, physiology* Oleic Acid / analysis, metabolism Sex Differentiation / physiology Spores, Fungal / chemistry, physiology* Time Factors Triglycerides / analysis, metabolism |
| Grant Support | |
ID/Acronym/Agency:
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GM47374/GM/NIGMS NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Fatty Acids; 0/Triglycerides; 112-80-1/Oleic Acid; 2197-37-7/Linoleic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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