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| Content Provider | Springer Nature Link |
|---|---|
| Author | Wei, Lili Chen, Chengrong Xu, Zhihong Näsholm, Torgny |
| Copyright Year | 2013 |
| Abstract | Organic nitrogen (N) can be directly taken up by many plants, particularly under low-temperature and N-limited conditions. The natural environment of Wollemia nobilis, shady conditions and shallow, acidic soils with high organic matter, led to the hypothesis that organic N might be a potential N source, although this species is living in a subtropical area. A pot experiment was carried out to investigate whether W. nobilis seedlings have the capability to take up intact organic N and whether the uptake of organic N contributes significantly to N acquisition for W. nobilis. Three 15N-labeled N forms, ammonium (NH4-N), nitrate (NO3-N), or glycine, were injected into soils separately, and the tissues of plants were then harvested 6 and 48 h after injection. Our results demonstrated that W. nobilis, a subtropical species, has the capability to take up intact glycine as indicated by the enrichment of 13C and 15N in fine roots at a nearly 1:1 ratio. The uptake rate of glycine-N was faster than that of inorganic N, but which was only restricted in the short term (6 h). The absorbed glycine-N reduced quickly (in 48 h), indicating that organic N uptake did not contribute greatly to N acquisition for W. nobilis. |
| Starting Page | 1247 |
| Ending Page | 1252 |
| Page Count | 6 |
| File Format | |
| ISSN | 01782762 |
| Journal | Biology and Fertility of Soils |
| Volume Number | 49 |
| Issue Number | 8 |
| e-ISSN | 14320789 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2013-05-22 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Australian native plant species Double labeling Glycine Subtropical Wollemi pine Agriculture Soil Science & Conservation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Agronomy and Crop Science Soil Science Microbiology |
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