Benomyl inhibits phosphorus transport but not fungal alkaline phosphatase activity in a Glomus-cucumber symbiosis

Short-term effects of benomyl on the arbuscular mycorrhizal fungus Glomus caledonium (Nicol. & Gerd.) Trappe and Gerdeman associated with Cucumis sativus L. were studied by measuring effects on fungal P transport and on fungal alkaline phosphatase activity. Mycorrhizal plants were grown in three...

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Veröffentlicht in:The New phytologist. - 1979. - 132(1996), 1 vom: 18. Jan., Seite 127-133
1. Verfasser: Larsen, J (VerfasserIn)
Weitere Verfasser: Thingstrup, I, Jakobsen, I, Rosendahl, S
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 1996
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Arbuscular mycorrhiza. hyphal P transport alkaline phosphatase benomyl
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520 |a Short-term effects of benomyl on the arbuscular mycorrhizal fungus Glomus caledonium (Nicol. & Gerd.) Trappe and Gerdeman associated with Cucumis sativus L. were studied by measuring effects on fungal P transport and on fungal alkaline phosphatase activity. Mycorrhizal plants were grown in three compartment systems where nylon mesh was used to separate n root-free hyphal compartment (HC) and a root + hyphal compartment(RHC) from The main root compartment (RC). Non-mycorrhizal control plants were grown in similar growth units. After 6 wk benomyl was applied to the plants in three ways: as soil drenches to RHC or HC, or as u spray to the leaves. Benomyl was added in three concentrations. Equal amounts of 32 P and 33 P were added to the HC and to the RHC respectively, immediately after the application of benomyl. Plants were harvested 4-6 d later. Hyphal transport of 32 P from the HC was inhibited when benomyl was applied to the HC at 10 μg g-1 soil, whereas the uptake of 32 P from RHC I roots + hyphae) was reduced only at the highest dose of application to the RHC (100 μ g g-1 soil). In contrast to the marked reduction of benomyl on fungal P transport, the activity of fungal alkaline phosphatase inside the roots was unaffected by benomyl 
650 4 |a Journal Article 
650 4 |a Arbuscular mycorrhiza. hyphal P transport 
650 4 |a alkaline phosphatase 
650 4 |a benomyl 
700 1 |a Thingstrup, I  |e verfasserin  |4 aut 
700 1 |a Jakobsen, I  |e verfasserin  |4 aut 
700 1 |a Rosendahl, S  |e verfasserin  |4 aut 
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