Differential uptake of soluble organic and inorganic nitrogen by two fruit species: Dimocarpus longan Lour. and Eriobotrya japonica Lindl
| العنوان: | Differential uptake of soluble organic and inorganic nitrogen by two fruit species: Dimocarpus longan Lour. and Eriobotrya japonica Lindl |
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| المؤلفون: | Shihe Xing, Chengrong Chen, Wenhao Yang, Liming Zhang, Yanlin Mao, Biqing Zhou |
| المصدر: | Journal of Soils and Sediments. 17:1579-1587 |
| بيانات النشر: | Springer Science and Business Media LLC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0106 biological sciences, Dimocarpus, biology, Chemistry, Stratigraphy, food and beverages, chemistry.chemical_element, 04 agricultural and veterinary sciences, Eriobotrya, biology.organism_classification, 01 natural sciences, Nitrogen, Japonica, Human fertilization, Distribution pattern, Glycine, Botany, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Inorganic nitrogen, 010606 plant biology & botany, Earth-Surface Processes |
| الوصف: | The aim of this study was to investigate whether two subtropical fruit species, Dimocarpus longan Lour. (Wulonglin) and Eriobotrya japonica Lindl. (Zaozhong 6), could directly take up soluble organic nitrogen (N), and if there was differential uptake of different forms of N between the two species. The stable isotopic tracing experiment was carried out using three 15N-labeled tracers [glycine-2-13C-15N, (15NH4)2SO4, and K(15NO3)] to examine the short-term (2, 6, and 72 h) uptake and distribution pattern of N within the plant in 1-year-old seedlings of both fruit species. After glycine-2-13C-15N application, the ratios of 13C to 15N concentration in the roots and whole seedlings of both Wulonglin and Zaozhong 6 were close to 1:1 at 2 and 6 h, respectively, showing that both fruit species could directly take up intact glycine. The 15NH4 + absorbed by Wulonglin and Zaozhong 6 whole seedlings in the (15NH4)2SO4 treatment were 13.2 and 9.2 times higher than glycine-derived-15N, while 15NO3 − absorbed in the K(15NO3) treatment were 27.7 and 7.7 times higher than glycine-derived-15N in the glycine-2-13C-15N treatment, respectively. This indicated that soluble organic N might not be the dominant N source taken up by both fruit species. Results also showed that Wulonglin preferred NO3 −, while Zaozhong 6 preferred NH4 +. The greater uptake of 15NH4 + and 15NO3 − than glycine-derived-15N by both fruit species might be related to their long-term adaptation to the supply of large quantity of inorganic N via fertilization. To elucidate the mechanisms responsible for the differential uptake of different forms of N by these two fruit species, further studies on mycorrhizal associations, transporter genes, and glycine metabolisms are warranted. This study has demonstrated that both D. longan Lour. and E. japonica Lindl. seedlings were able to take up intact glycine directly, while the NO3 − and NH4 + were still dominant N forms absorbed by both fruit species. |
| تدمد: | 1614-7480 1439-0108 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::a79088ab89b0e0589dfed84c86cbc007 https://doi.org/10.1007/s11368-016-1635-7 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........a79088ab89b0e0589dfed84c86cbc007 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 16147480 14390108 |
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