The effect of growth temperature on the fatty acid composition of fungi in the order Mucorales

Sumner, John; Morgan, E. David; Evans, Holly

doi:10.1139/m69-089

Cited by 82 publications

(29 citation statements)

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“…The triply unsaturated C 18 acid was identified as y-linolenic acid. This agrees with previous reports that only the y-isomer is present in phycomycete fungi (Bernhard & Albrecht, 1948;Shaw, 1965Shaw, , 1966aWhite & Powell, 1966;Tyrrell, 1967 andSumner, Morgan &Evans, 1969). These results are summarized in Tables 3 and 4.…”

Section: 1supporting

confidence: 92%

The Fatty Acid Composition of Sporangiospores and Vegetative Mycelium of Temperature-adapted Fungi in the Order Mucorales

Sumner¹,

Morgan

1969

Journal of General Microbiology

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SUMMARYThe lipid content and fatty acid composition of sporangiospores and vegetative mycelium of mesophilic, thermotolerant and thermophilic fungi in the Mucorales were examined. In each fungus the spores contained less lipid than the vegetative mycelium. The mesophiles accumulated less lipid in spores and mycelium than did thermotolerants and thermophiles. No unusual fatty acids were detected by gas-liquid chromatography in the lipids of spores or mycelium. The fatty acid compositions of spores and vegetative mycelium were qualitatively very similar, but spore lipids were always more highly saturated than mycelial lipids. Lowering growth temperature from 48 to 25" increased the synthesis of unsaturated fatty acids in the spores and the mycelium of the thermotolerant and thermophilic fungi examined.

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Section: 1supporting

confidence: 92%

The Fatty Acid Composition of Sporangiospores and Vegetative Mycelium of Temperature-adapted Fungi in the Order Mucorales

Sumner¹,

Morgan

1969

Journal of General Microbiology

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“…The percent composition of other fatty acids did not vary appreciably under the influence of different temperatures. The results of this study show that the lower growth temperatures simulate the biosynthesis of highly unsaturated fatty acids, a phenomenon that has already been observed for some mesophilic and psychrophilic Mucor species (22). The effects of temperature on the degree of lipid unsaturation may be exerted through the influence of temperature on oxygen tension of the media.…”

Section: Resultssupporting

confidence: 67%

Enhancement of gamma-linolenic acid production by the fungus Mucor sp LB-54 by growth temperature

1999

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As a relatively prolific producer of GLA, the strain of Mucor sp LB-54 was selected for a study at different growth temperatures in shaker flask culture. The strain used in our experiment was capable to accumulate a relatively high amount of intracellular lipid, 20.73 % of dry cell weight, and GLA content of 15 % of total fatty acids after 5 days of incubation at 28°C. As the growth temperature was decreased from 28 to 12°C the percentage of GLA increased from 15 to 24 % of total fatty acids. In order to optimize the culture conditions for rapid biomass production and lipid production with a high proportion of GLA, the fungus was grown at two temperature combinations associated supplies of carbon source (glucose) in the culture medium. Maximal production of GLA (74 mg/l) was obtained from the Mucor sp LB-54 strain after 5 days of incubation at 28°C in basal medium following glucose addition (7 % w/v) and incubation for an additional 3 days at 12°C. The identity of GLA found in the strain of Mucor sp LB-54 was confirmed by the coupled gas chromatography-mass spectrometry

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“…This modifi cation could be due to the membrane fl uid stability of the organisms as an adaptive mechanism to cold environment. This observation is correlates very much with results observed by Robinson [18] and Sumner et al [19]. Multiple interlocking controls and regulatory mechanisms operate within the cell system necessitate or adjust the cell lipid to alter the lipid profi le.…”

Section: Resultssupporting

confidence: 90%

Differential temperature effect on the production of enhanced gamma linolenic acid in Mucor rouxii CFR-G15

Mamatha

Venkateswaran

2010

Indian J Microbiol

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Mucor rouxii CFR-G15, a locally isolated phycomycetous fungus, on cultivation at room temperature produced more than 30% (w/w) lipid in their dry cell weight, in which 14.2% accounted to be GLA content of the total fatty acids. It was observed that when incubation temperature lowered at 14°C, GLA content of the mycelium increased signifi cantly (P<0.05) from 14.2% to 21.97%. In order to optimize the cultural conditions for high biomass and lipid production with high GLA content, the fungus was grown in association of two different temperatures and supply of additional glucose in culture medium. Maximum lipid and GLA were obtained 23.56 and 19.5% respectively, when the culture was grown at 28°C for four days and followed by addition of glucose (5%), and lowered the incubation temperature to 14ºC for another four days. The presence of GLA in the oil obtained from M. rouxii CFR-G15 was confi rmed by the gas chromatography-mass spectrometry. Gamma linolenic acid (GLA, n-6) is gaining importance in pharmaceutical and nutraceutical industries because of clinical evidence demonstrated that it has various benefi cial effects in human health. In this paper temperature played a major role in enhancing the GLA content which has been described.

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The effect of growth temperature on the fatty acid composition of fungi in the order Mucorales

Cited by 82 publications

References 10 publications

The Fatty Acid Composition of Sporangiospores and Vegetative Mycelium of Temperature-adapted Fungi in the Order Mucorales

The Fatty Acid Composition of Sporangiospores and Vegetative Mycelium of Temperature-adapted Fungi in the Order Mucorales

Enhancement of gamma-linolenic acid production by the fungus Mucor sp LB-54 by growth temperature

Differential temperature effect on the production of enhanced gamma linolenic acid in Mucor rouxii CFR-G15

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