Quantifying remobilization of pre-existing nitrogen from cuttings to new growth of woody plants using 15N at natural abundance
| العنوان: | Quantifying remobilization of pre-existing nitrogen from cuttings to new growth of woody plants using 15N at natural abundance |
|---|---|
| المؤلفون: | Lee Kalcsits, Robert D. Guy |
| المصدر: | Plant Methods |
| بيانات النشر: | BioMed Central, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | 0106 biological sciences, chemistry.chemical_element, Biomass, Plant Science, 01 natural sciences, 03 medical and health sciences, chemistry.chemical_compound, Cutting, Nitrate, Botany, Genetics, Ammonium, Populus balsamifera, 030304 developmental biology, 0303 health sciences, biology, fungi, Methodology, food and beverages, biology.organism_classification, Nitrogen, Isotopes of nitrogen, chemistry, Agronomy, Nitrogen remobilization, Poplar, δ15N, 010606 plant biology & botany, Biotechnology, Woody plant |
| الوصف: | Background For measurements of nitrogen isotope composition at natural abundance, carry-over of pre-existing nitrogen remobilized to new plant growth can cause deviation of measured isotope composition (δ15N) from the δ15Nof newly acquired nitrogen. To account for this problem, a two-step approach was proposed to quantify and correct for remobilized nitrogen from vegetative cuttings of Populus balsamifera L. grown with either nitrate (δ15N = 58.5‰) or ammonium (δ15N = −0.96‰). First, the fraction of carry-over nitrogen remaining in the cutting was estimated by isotope mass balance. Then measured δ15N values were adjusted for the fraction of pre-existing nitrogen remobilized to the plant. Results Mean plant δ15N prior to correction was 49‰ and −5.8‰ under nitrate and ammonium, respectively. Plant δ15N was non-linearly correlated to biomass (r2 = 0.331 and 0.249 for nitrate and ammonium, respectively; P |
| اللغة: | English |
| DOI: | 10.14288/1.0223345 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d516bcc36ed078e32d6510a1ca316248Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....d516bcc36ed078e32d6510a1ca316248 |
| قاعدة البيانات: | OpenAIRE |
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