Upregulation of a desaturase is associated with the enhancement of cold hardiness in the onion maggot, Delia antiqua.

Upregulation of a desaturase is associated with the enhancement of cold hardiness in the onion maggot, Delia antiqua. Research Abstract Details 

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Upregulation of a desaturase is associated with the enhancement of cold hardiness in the onion maggot, Delia antiqua. Abstract Text:

Takumi Kayukawa,Bin Chen,Sugihiko Hoshizaki,Yukio Ishikawa,Takumi Kayukawa,Bin Chen,Sugihiko Hoshizaki,Yukio Ishikawa,Takumi Kayukawa,Bin Chen,Sugihiko Hoshizaki,Yukio Ishikawa,

Cold-acclimated non-diapause pupae, and summer- and winter-diapause pupae of the onion maggot, Delia antiqua (Diptera: Anthomyiidae), show marked cold hardiness as compared with intact non-diapause pupae. Homeoviscous adaptation of cellular membranes is crucial to enhance the cold hardiness of organisms, and Delta9-acyl-CoA desaturases have been assumed, albeit without experimental evidence in insects, to play a key role in the adaptation. We cloned the cDNA of a desaturase gene (Dadesat) from D. antiqua, which is most likely to encode Delta9-acyl-CoA desaturase. Expression of Dadesat mRNA in the brain, midgut, and Malpighian tubules of cold-acclimated and diapause pupae was upregulated 2-10 fold, correlating well with the increase in cold hardiness. In the pupae with enhanced cold hardiness, palmitoleic and oleic acids, the presumed products of Dadesat, in the phospholipids were significantly increased. These findings suggest that the increase in the expression of Dadesat contributes to enhanced cold hardiness in D. antiqua through the production of these unsaturated fatty acids.

Upregulation of a desaturase is associated with the enhancement of cold hardiness in the onion maggot, Delia antiqua. Publishing Authors By Initials

T Kayukawa,B Chen,S Hoshizaki,Y Ishikawa,T Kayukawa,B Chen,S Hoshizaki,Y Ishikawa,T Kayukawa,B Chen,S Hoshizaki,Y Ishikawa,

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Upregulation of a desaturase is associated with the enhancement of cold hardiness in the onion maggot, Delia antiqua. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Insect biochemistry and molecular biology

VOLUME: 37

Page Numbers: 1160-7

Journal Abbreviation: Insect Biochem. Mol. Biol.

ISSN: 0965-1748

DAY: 22

MONTH: 07

YEAR: 2007

Upregulation of a desaturase is associated with the enhancement of cold hardiness in the onion maggot, Delia antiqua. Information

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LANGUAGE: eng

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AFFILIATION: Laboratory of Applied Entomology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan. aa57003@mail.ecc.u-tokyo.ac.jp

Country: England

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MEDLINETA: Insect Biochem Mol Biol

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