Lipoxygenase-mediated formation of hydrocarbons and unsaturated aldehydes in freshwater diatoms

被引：84

作者：

Wendel, T

Juttner, F

机构：

[1] UNIV ZURICH, INST PFLANZENBIOL, LIMNOL STN, CH-8802 KILCHBERG, SWITZERLAND

[2] MAX PLANCK INST LIMNOL, OKOPHYSIOL ABT, W-2320 PLON, GERMANY

来源：

PHYTOCHEMISTRY | 1996年 / 41卷 / 06期

关键词：

diatoms; lipoxygenase; hydrocarbons; ectocarpene; dictyopterenes; fucoserratene; 2,4,7-decatrienal; VOC;

D O I：

10.1016/0031-9422(95)00828-4

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Upon initiation of lipoxygenase reactions one group of freshwater diatoms synthesized unsaturated acyclic and alicyclic hydrocarbons (ectocarpene, dictyopterenes and fucoserratene); another group synthesized polyunsaturated aldehydes. Among others (2E),(4Z),(7Z)-decatrienal is described as a new lipoxygenase cleavage product in Melosira. The patterns of the volatile organic compounds were typical for particular species of diatoms, indicating different specificities of the enzymes involved. The formation of unsaturated hydrocarbons and aldehydes was fully inhibited by strict exclusion of dioxygen, but could be regained by subsequent addition of dioxygen. The application of radical scavengers or chelating agents resulted in a high percentage inhibition of hydrocarbon and aldehyde formation.

引用

页码：1445 / 1449

页数：5

共 24 条

[1] AN ENZYMATIC CONVERSION OF LIPOXYGENASE PRODUCTS BY A HYDROPEROXIDE LYASE IN BLUE-GREEN-ALGAE (OSCILLATORIA SP) [J].