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Profile of Enzyme Activity And Growth of Wood Rotting Fungi In Metal Ion Containing Media

Erman Munır,Takefumi Hattori,Mikio Shimada-2008-12-01
2

TL;DRAbstract

Key cnzyme! of the glyoxylate cycle (isocilrate lyase and malate synthase), tricarboxylic acid cycle (isocitrate dehydrogenase), and GABA route (glutamate dehydrogenase) were measured in mycelia of Fnmilnp.fi.f paluuri.f grown on metal ion containing media. A higher isocitrate lyase activity was observed on the initial stage of cultivation at all linds of media tested. while malate !ynthase was constant throughout the incubation period. The activity of isocitrate dehydrogenase and glutamate dehydrogenase increased steadily from the early !tage of cultivation. The growth of brown-rot fungi Fomi/opsis poills/ris. Coniaporaputeana. and Lae/iporus sulphureus was not effected by Cu. In. and AI. but the last two fungi were !trongly inhibited by Co al 1000 ppm. The white rot fungi Pleura/us ostreatus and Coriolus versicolor were also inhibited by Co. the laner fungus and Phanerochoe/e chrysasporium were inhibited by eu at this concentration. Higher activity of Ihe glyoxylate cycle enzymes det

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Key cnzyme! of the glyoxylate cycle (isocilrate lyase and malate synthase), tricarboxylic acid cycle (isocitrate dehydrogenase), and GABA route (glutamate dehydrogenase) were measured in mycelia of Fnmilnp.fi.f paluuri.f grown on metal ion containing media. A higher isocitrate lyase activity was observed on the initial stage of cultivation at all linds of media tested. while malate !ynthase was constant throughout the incubation period. The activity of isocitrate dehydrogenase and glutamate dehydrogenase increased steadily from the early !tage of cultivation. The growth of brown-rot fungi Fomi/opsis poills/ris. Coniaporaputeana. and Lae/iporus sulphureus was not effected by Cu. In. and AI. but the last two fungi were !trongly inhibited by Co al 1000 ppm. The white rot fungi Pleura/us ostreatus and Coriolus versicolor were also inhibited by Co. the laner fungus and Phanerochoe/e chrysasporium were inhibited by eu at this concentration. Higher activity of Ihe glyoxylate cycle enzymes det

Keywords

Malate synthaseIsocitrate lyaseGlyoxylate cycleMalate dehydrogenaseIsocitrate dehydrogenaseCitric acid cycleMyceliumDehydrogenase

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