دورية أكاديمية
Post-anthesis nitrate uptake is critical to yield and grain protein content in Sorghum bicolor
| العنوان: | Post-anthesis nitrate uptake is critical to yield and grain protein content in Sorghum bicolor |
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| المؤلفون: | Worland, Belinda, Robinson, Nicole, Jordan, David, Schmidt, Susanne, Godwin, Ian |
| بيانات النشر: | Elsevier GmbH - Urban und Fischer |
| سنة النشر: | 2017 |
| المجموعة: | The University of Queensland: UQ eSpace |
| مصطلحات موضوعية: | Nitrate, Nitrate accumulation, Nitrogen, Nitrogen remobilization, 1102 Agronomy and Crop Science, 1110 Plant Science, 1314 Physiology |
| الوصف: | Crops only use ∼50% of applied nitrogen (N) fertilizer creating N losses and pollution. Plants need to efficiently uptake and utilize N to meet growing global food demands. Here we investigate how the supply and timing of nitrate affects N status and yield in Sorghum bicolor (sorghum). Sorghum was grown in pots with either 10 mM (High) or 1 mM (Low) nitrate supply. Shortly before anthesis the nitrate supply was either maintained, increased 10-fold or eliminated. Leaf sheaths of sorghum grown with High nitrate accumulated nitrate in concentrations >3-times higher than leaves. Removal of nitrate supply pre-anthesis resulted in the rapid reduction of stored nitrate in all organs. Plants receiving a 10-fold increase in nitrate supply pre-anthesis achieved similar grain yield and protein content and 29% larger grains than those maintained on High nitrate, despite receiving 24% less nitrate over the whole growth period. In sorghum, plant available N is important throughout development, particularly anthesis and grain filling, for grain yield and grain protein content. Nitrate accumulation in leaf sheaths presents opportunities for the genetic analysis of mechanisms behind nitrate storage and remobilization in sorghum to improve N use efficiency. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 0176-1617 1618-1328 |
| العلاقة: | orcid:0000-0002-8928-1552; orcid:0000-0001-6285-6179; orcid:0000-0002-8128-1304; orcid:0000-0001-8369-1238; orcid:0000-0002-4006-4426; Not set |
| الإتاحة: | https://doi.org/10.1016/j.jplph.2017.05.026Test https://espace.library.uq.edu.au/view/UQ:681917/UQ681917_OA.pdfTest https://espace.library.uq.edu.au/view/UQ:681917Test |
| رقم الانضمام: | edsbas.99D87FD4 |
| قاعدة البيانات: | BASE |
| تدمد: | 01761617 16181328 |
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