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Growth characteristics, nitrogen uptake and enzyme activities of the nitrate-utilising ectomycorrhizal Scleroderma verrucosum

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Growth characteristics, nitrogen uptake and enzyme activities of the nitrate-utilising ectomycorrhizal Scleroderma verrucosum

Auteurs : D. Prima Putra [France] ; A. Berredjem [France] ; M. Chalot [France] ; B. Dell [Australie] ; B. Botton [France]

Source :

Mycological Research [ 0953-7562 ] ; 1999.

RBID : ISTEX:A11758B69C163A4F4501CF1DD59BB28691EE8B11

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Wicri :
- topic : Biomasse.

English descriptors

Abstract

The growth characteristics and uptake capacities for NO3 and NH4, as well as activities of nitrogen assimilating-enzymes have been determined in Scleroderma verrucosum. Biomass, grown on agar or liquid MMN media, was higher on nitrate. When S. verrucosum was grown in the presence of equal amounts of ammonium and nitrate, uptake rate for NH4 was considerably higher than that of NO3. In addition, it was found that a limitation in ammonium concentration was a prerequisite for nitrate uptake. Nitrate reductase was stimulated when the fungus was transferred from ammonium to nitrate containing media, indicating that the enzyme was inducible by nitrate and repressed by ammonium. Glutamine synthetase and NAD-glutamate synthase activities were clearly detected in S. verrucosum, while the NADP-glutamate dehydrogenase was almost undetectable. This is consistent with the view that ammonium assimilation occurs through the GS/GOGAT cycle in S. verrucosum.

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https://api.istex.fr/document/A11758B69C163A4F4501CF1DD59BB28691EE8B11/fulltext/pdf

DOI: 10.1017/S0953756298008004

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<author><name sortKey="Putra, D Prima" sort="Putra, D Prima" uniqKey="Putra D" first="D. Prima" last="Putra">D. Prima Putra</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Agar</term>
<term>Amino acids</term>
<term>Aminotransferase</term>
<term>Ammonium</term>
<term>Ammonium assimilation</term>
<term>Ammonium concentration</term>
<term>Aspartate aminotransferase</term>
<term>Biomass</term>
<term>Botton</term>
<term>Crassa</term>
<term>Culture medium</term>
<term>Dehydrogenase</term>
<term>Ectomycorrhizal</term>
<term>Ectomycorrhizal fungi</term>
<term>Enzyme activities</term>
<term>Finlay</term>
<term>Frostegard sonnerfeldt</term>
<term>Fungi</term>
<term>Fungus</term>
<term>Glutamate</term>
<term>Glutamate dehydrogenase</term>
<term>Glutamine</term>
<term>Glutamine synthetase</term>
<term>Growth characteristics</term>
<term>Hebeloma</term>
<term>Hebeloma cylindrosporum</term>
<term>Incubation medium</term>
<term>Initial concentration</term>
<term>Involutus</term>
<term>Laccaria</term>
<term>Laccaria laccata</term>
<term>Liquid culture</term>
<term>Mycelium</term>
<term>Mycorrhizal</term>
<term>Mycorrhizal fungi</term>
<term>Neurospora crassa</term>
<term>Nitrate</term>
<term>Nitrate reductase</term>
<term>Nitrate reductase activity</term>
<term>Nitrate utilization</term>
<term>Nitrogen source</term>
<term>Nitrogen uptake</term>
<term>Paxillus involutus</term>
<term>Physiologia plantarum</term>
<term>Phytologist</term>
<term>Plant physiology</term>
<term>Plassard</term>
<term>Plassard salsac</term>
<term>Potassium phosphate</term>
<term>Reductase</term>
<term>Salsac</term>
<term>Scleroderma</term>
<term>Scleroderma verrucosum</term>
<term>Synthetase</term>
<term>Undetectable</term>
<term>Uptake</term>
<term>Uptake rate</term>
<term>Verrucosum</term>
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<keywords scheme="Teeft" xml:lang="en"><term>Agar</term>
<term>Amino acids</term>
<term>Aminotransferase</term>
<term>Ammonium</term>
<term>Ammonium assimilation</term>
<term>Ammonium concentration</term>
<term>Aspartate aminotransferase</term>
<term>Biomass</term>
<term>Botton</term>
<term>Crassa</term>
<term>Culture medium</term>
<term>Dehydrogenase</term>
<term>Ectomycorrhizal</term>
<term>Ectomycorrhizal fungi</term>
<term>Enzyme activities</term>
<term>Finlay</term>
<term>Frostegard sonnerfeldt</term>
<term>Fungi</term>
<term>Fungus</term>
<term>Glutamate</term>
<term>Glutamate dehydrogenase</term>
<term>Glutamine</term>
<term>Glutamine synthetase</term>
<term>Growth characteristics</term>
<term>Hebeloma</term>
<term>Hebeloma cylindrosporum</term>
<term>Incubation medium</term>
<term>Initial concentration</term>
<term>Involutus</term>
<term>Laccaria</term>
<term>Laccaria laccata</term>
<term>Liquid culture</term>
<term>Mycelium</term>
<term>Mycorrhizal</term>
<term>Mycorrhizal fungi</term>
<term>Neurospora crassa</term>
<term>Nitrate</term>
<term>Nitrate reductase</term>
<term>Nitrate reductase activity</term>
<term>Nitrate utilization</term>
<term>Nitrogen source</term>
<term>Nitrogen uptake</term>
<term>Paxillus involutus</term>
<term>Physiologia plantarum</term>
<term>Phytologist</term>
<term>Plant physiology</term>
<term>Plassard</term>
<term>Plassard salsac</term>
<term>Potassium phosphate</term>
<term>Reductase</term>
<term>Salsac</term>
<term>Scleroderma</term>
<term>Scleroderma verrucosum</term>
<term>Synthetase</term>
<term>Undetectable</term>
<term>Uptake</term>
<term>Uptake rate</term>
<term>Verrucosum</term>
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<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Biomasse</term>
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<front><div type="abstract">The growth characteristics and uptake capacities for NO3 and NH4, as well as activities of nitrogen assimilating-enzymes have been determined in Scleroderma verrucosum. Biomass, grown on agar or liquid MMN media, was higher on nitrate. When S. verrucosum was grown in the presence of equal amounts of ammonium and nitrate, uptake rate for NH4 was considerably higher than that of NO3. In addition, it was found that a limitation in ammonium concentration was a prerequisite for nitrate uptake. Nitrate reductase was stimulated when the fungus was transferred from ammonium to nitrate containing media, indicating that the enzyme was inducible by nitrate and repressed by ammonium. Glutamine synthetase and NAD-glutamate synthase activities were clearly detected in S. verrucosum, while the NADP-glutamate dehydrogenase was almost undetectable. This is consistent with the view that ammonium assimilation occurs through the GS/GOGAT cycle in S. verrucosum.</div>
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Growth characteristics, nitrogen uptake and enzyme activities of the nitrate-utilising ectomycorrhizal Scleroderma verrucosum

Growth characteristics, nitrogen uptake and enzyme activities of the nitrate-utilising ectomycorrhizal Scleroderma verrucosum

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Abstract

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