دورية أكاديمية
Elevated CO2 increases nitrogen fixation at the reproductive phase contributing to various yield responses of soybean cultivars
| العنوان: | Elevated CO2 increases nitrogen fixation at the reproductive phase contributing to various yield responses of soybean cultivars |
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| المؤلفون: | Yansheng Li, Zhenhua Yu, Xiaobing Liu, Ulrike Mathesius, Guanghua Wang, Caixian Tang, Junjiang Wu, Judong Liu, Shaoqing Zhang, Jian Jin |
| سنة النشر: | 2021 |
| المجموعة: | La Trobe University (Melbourne): Figshare |
| مصطلحات موضوعية: | Uncategorized, Science & Technology, Life Sciences & Biomedicine, Plant Sciences, open-top chamber, N-15 labeling, nodule density, symbiotic N-2 fixation, N remobilization, Glycine max L, ATMOSPHERIC CARBON-DIOXIDE, GLYCINE-MAX, ENRICHMENT FACE, N-2 FIXATION, TRIFOLIUM-REPENS, FIELD CONDITIONS, NORTHEAST CHINA, SOIL, PEA, GROWTH, 15N labeling, symbiotic N2 fixation |
| الوصف: | © 2017 Li, Yu, Liu, Mathesius, Wang, Tang, Wu, Liu, Zhang and Jin. Nitrogen deficiency limits crop performance under elevated CO2 (eCO2), depending on the ability of plant N uptake. However, the dynamics and redistribution of N2 fixation, and fertilizer and soil N use in legumes under eCO2 have been little studied. Such an investigation is essential to improve the adaptability of legumes to climate change. We took advantage of genotype-specific responses of soybean to increased CO2 to test which N-uptake phenotypes are most strongly related to enhanced yield. Eight soybean cultivars were grown in open-top chambers with either 390 ppm (aCO2) or 550 ppm CO2 (eCO2). The plants were supplied with 100mg N kg−1 soil as15N-labeled calcium nitrate, and harvested at the initial seed-filling (R5) and full-mature (R8) stages. Increased yield in response to eCO2 correlated highly (r = 0.95) with an increase in symbiotically fixed N during the R5 to R8 stage. In contrast, eCO2 only led to small increases in the uptake of fertilizer-derived and soil-derived N during R5 to R8, and these increases did not correlate with enhanced yield. Elevated CO2 also decreased the proportion of seed N redistributed from shoot to seeds, and this decrease strongly correlated with increased yield. Moreover, the total N uptake was associated with increases in fixed-N per nodule in response to eCO2, but not with changes in nodule biomass, nodule density, or root length. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| العلاقة: | https://figshare.com/articles/journal_contribution/Elevated_CO2_increases_nitrogen_fixation_at_the_reproductive_phase_contributing_to_various_yield_responses_of_soybean_cultivars/13519928Test |
| DOI: | 10.26181/5ff546d52d5a0 |
| الإتاحة: | https://doi.org/10.26181/5ff546d52d5a0Test https://figshare.com/articles/journal_contribution/Elevated_CO2_increases_nitrogen_fixation_at_the_reproductive_phase_contributing_to_various_yield_responses_of_soybean_cultivars/13519928Test |
| حقوق: | CC BY 4.0 |
| رقم الانضمام: | edsbas.4DBAF41 |
| قاعدة البيانات: | BASE |
| DOI: | 10.26181/5ff546d52d5a0 |
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