دورية أكاديمية
Foliar applications of various nitrogen (N) forms to winter wheat affect grain protein accumulation and quality via N metabolism and remobilization
| العنوان: | Foliar applications of various nitrogen (N) forms to winter wheat affect grain protein accumulation and quality via N metabolism and remobilization |
|---|---|
| المؤلفون: | Xiaokang Lyu, Yang Liu, Na Li, Liban Ku, Yuting Hou, Xiaoxia Wen |
| المصدر: | Crop Journal, Vol 10, Iss 4, Pp 1165-1177 (2022) |
| بيانات النشر: | KeAi Communications Co., Ltd., 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Agriculture LCC:Agriculture (General) |
| مصطلحات موضوعية: | Nitrogen remobilization, Source-Sink, Gluten protein, Grain filling, Quality formation, Agriculture, Agriculture (General), S1-972 |
| الوصف: | Foliar nitrogen (N) application is an effective strategy to improve protein content and quality in wheat kernels, but the specific effects of N forms remain unclear. In a two-year field study, foliar application of various N forms (NO3-, urea, NH4+) at anthesis was performed to measure their effects on wheat grain protein accumulation, quality formation, and the underlying mechanisms. Foliar application of three N forms showed varying effects in improving grain gluten proteins and quality traits. Under NH4+ application, there was more post-anthesis N uptake for grain filling, with relatively strong increase in enzyme activities and gene expression associated with N metabolism in flag leaves at 8–20 days after anthesis (DAA), whereas its promotion of grain N metabolism became weaker after 20 DAA than those under NO3- and urea treatments. More N was remobilized from source organs to grain under treatment with foliar NO3- and urea. Genes controlling the synthesis of gluten protein and disulfide bonds were upregulated by NO3- and urea at 20–28 DAA, contributing to increased grain protein content and quality. Overall, foliar applications of NO3- and urea were more effective than those of NH4+ in increasing grain N filling. These findings show that manipulating the source–sink relationship by reinforcing grain N metabolism and N remobilization is critical for optimizing grain protein accumulation and quality formation. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2214-5141 |
| العلاقة: | http://www.sciencedirect.com/science/article/pii/S2214514121002208Test; https://doaj.org/toc/2214-5141Test |
| DOI: | 10.1016/j.cj.2021.10.009 |
| الوصول الحر: | https://doaj.org/article/96481fde567048eb99741243ff7290dbTest |
| رقم الانضمام: | edsdoj.96481fde567048eb99741243ff7290db |
| قاعدة البيانات: | Directory of Open Access Journals |
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