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| Content Provider | Springer Nature Link |
|---|---|
| Author | Mansouri Bauly, Hounayda Kruse, Jörg Sýkorová, Zuzana Scheerer, Ursula Kopriva, Stanislav |
| Copyright Year | 2006 |
| Abstract | The importance of the ectomycorrhiza symbiosis for plant acquisition of phosphorus and nitrogen is well established whereas its contribution to sulfur nutrition is only marginally understood. In a first step to investigate the role of ectomycorrhiza in plant sulfur nutrition, we characterized sulfate and glutathione uptake in Laccaria bicolor. By studying the regulation of sulfate uptake in this ectomycorrhizal fungus, we found that in contrast to bacteria, yeast, and plants, sulfate uptake in L. bicolor was not feedback-inhibited by glutathione. On the other hand, sulfate uptake was increased by sulfur starvation as in other organisms. The activity of 3′-phosphoadenosine 5′-phosphosulfate reductase, the key enzyme of the assimilatory sulfate reduction pathway in fungi, was increased by sulfur starvation and decreased after treatment with glutathione revealing an uncoupling of sulfate uptake and reduction in the presence of reduced sulfur compounds. These results support the hypothesis that L. bicolor increases sulfate supply to the plant by extended sulfate uptake and the plant provides the ectomycorrhizal fungus with reduced sulfur. |
| Starting Page | 421 |
| Ending Page | 427 |
| Page Count | 7 |
| File Format | |
| ISSN | 09406360 |
| Journal | Mycorrhiza |
| Volume Number | 16 |
| Issue Number | 6 |
| e-ISSN | 14321890 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2006-04-05 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Glutathione Ectomycorrhiza Laccaria bicolor Plant nutrition Sulfate uptake Sulfate assimilation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Plant Science Medicine Molecular Biology Ecology, Evolution, Behavior and Systematics |
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