Dans beaucoup de graines, le glyoxysome est un type de peroxysome dans lequel se déroule le cycle du glyoxylate permettant la transformation des lipides stockés dans cette graine en saccharose pour alimenter l'embryon lors de la germination.
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GLYOXYSOME — Pendant la germination des graines oléagineuses (ricin, tournesol), les réserves lipidiques de l’albumen ou des cotylédons des semences disparaissent. Ces lipides sont convertis en glucides, principalement du saccharose: ainsi un flux de carbone… … Encyclopédie Universelle
Glyoxysome — Glyoxysomes are specialized peroxisomes found in plants (particularly in the fat storage tissues of germinating seeds) and also in filamentous fungi. As in all peroxisomes, in glyoxysomes the fatty acids are hydrolyzed to acetyl CoA by… … Wikipedia
glyoxysome — noun Any of various specialized peroxisomes found in plants (particularly in the fat storage tissues of germinating seeds) and also in filamentous fungi, serving to break down fatty acids and provide enzymes to produce intermediates for the… … Wiktionary
glyoxysome — gly·ox·y·some (gli okґsĭ sōm) any of the microbodies present in certain plants and microorganisms, resembling the peroxisomes of vertebrate animal cells, but having, in addition to catalase and oxidase enzymes, the enzymes of the… … Medical dictionary
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