scholarly journals Solving the Conundrum: Widespread Proteins Annotated for Urea Metabolism in Bacteria Are Carboxyguanidine Deiminases Mediating Nitrogen Assimilation from Guanidine

Biochemistry ◽  
2020 ◽  
Vol 59 (35) ◽  
pp. 3258-3270 ◽  
Author(s):  
Nicholas O. Schneider ◽  
Lambros J. Tassoulas ◽  
Danyun Zeng ◽  
Amanda J. Laseke ◽  
Nicholas J. Reiter ◽  
...  
Keyword(s):  
Nitrogen Assimilation ◽  
Urea Metabolism

Nitrogen Assimilation in an Improved Alfalfa Population 1

Crop Science ◽  
1985 ◽  
Vol 25 (6) ◽  
pp. 1011-1015 ◽  
Author(s):  
Donald A. Phillips ◽  
Scott D. Cunningham ◽  
Eulogio J. Bedmar ◽  
T. Colleen Sweeney ◽  
Larry R. Teuber
Keyword(s):  
Nitrogen Assimilation

Nitrogen assimilation and gene regulation of two Kentucky bluegrass cultivars differing in response to nitrate supply

2021 ◽  
Vol 288 ◽  
pp. 110315
Author(s):  
Xiaoyang Sun ◽  
Qianjiao Zheng ◽  
Liangbing Xiong ◽  
Fuchun Xie ◽  
Xun Li ◽  
...  
Keyword(s):  
Gene Regulation ◽  
Nitrogen Assimilation ◽  
Kentucky Bluegrass ◽  
Nitrate Supply

Extended photoperiods after flowering increase the rate of dry matter production and nitrogen assimilation in mid maturing soybean cultivars

2021 ◽  
Vol 265 ◽  
pp. 108104
Author(s):  
Santiago Julián Kelly ◽  
María Gabriela Cano ◽  
Diego Darío Fanello ◽  
Eduardo Alberto Tambussi ◽  
Juan José Guiamet
Keyword(s):  
Dry Matter ◽  
Nitrogen Assimilation ◽  
Dry Matter Production ◽  
Soybean Cultivars ◽  
Matter Production

scholarly journals Biochar induced improvement in root system architecture enhances nutrient assimilation by cotton plant seedlings

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Lei Feng ◽  
Wanli Xu ◽  
Guangmu Tang ◽  
Meiying Gu ◽  
Zengchao Geng
Keyword(s):  
Root System ◽  
System Architecture ◽  
Fine Roots ◽  
Nitrogen Assimilation ◽  
Surface Soil ◽  
Soil Layer ◽  
Root System Architecture ◽  
Seedling Stage ◽  
Agronomic Efficiency ◽  
Surface Soil Layer

Abstract Background Raising nitrogen use efficiency of crops by improving root system architecture is highly essential not only to reduce costs of agricultural production but also to mitigate climate change. The physiological mechanisms of how biochar affects nitrogen assimilation by crop seedlings have not been well elucidated. Results Here, we report changes in root system architecture, activities of the key enzymes involved in nitrogen assimilation, and cytokinin (CTK) at the seedling stage of cotton with reduced urea usage and biochar application at different soil layers (0–10 cm and 10–20 cm). Active root absorption area, fresh weight, and nitrogen agronomic efficiency increased significantly when urea usage was reduced by 25% and biochar was applied in the surface soil layer. Glutamine oxoglutarate amino transferase (GOGAT) activity was closely related to the application depth of urea/biochar, and it increased when urea/biochar was applied in the 0–10 cm layer. Glutamic-pyruvic transaminase activity (GPT) increased significantly as well. Nitrate reductase (NR) activity was stimulated by CTK in the very fine roots but inhibited in the fine roots. In addition, AMT1;1, gdh3, and gdh2 were significantly up-regulated in the very fine roots when urea usage was reduced by 25% and biochar was applied. Conclusion Nitrogen assimilation efficiency was significantly affected when urea usage was reduced by 25% and biochar was applied in the surface soil layer at the seedling stage of cotton. The co-expression of gdh3 and gdh2 in the fine roots increased nitrogen agronomic efficiency. The synergistic expression of the ammonium transporter gene and gdh3 suggests that biochar may be beneficial to amino acid metabolism.

Nitrogen Assimilation in Alfalfa: Isolation and Characterization of an Asparagine Synthetase Gene Showing Enhanced Expression in Root Nodules and Dark-Adapted Leaves

1997 ◽  
Vol 9 (8) ◽  
pp. 1339 ◽  
Author(s):  
Lifang Shi ◽  
Scott N. Twary ◽  
Hirofumi Yoshioka ◽  
Robert G. Gregerson ◽  
Susan S. Miller ◽  
...  
Keyword(s):  
Nitrogen Assimilation ◽  
Root Nodules ◽  
Asparagine Synthetase ◽  
Isolation And Characterization ◽  
Enhanced Expression

scholarly journals Nitrogen assimilation defects in a mutant ofRhodopseudomonas capsulatablocked in α-ketoglutarate generation

1977 ◽  
Vol 2 (5) ◽  
pp. 267-270
Author(s):  
J.T. Beatty ◽  
B.C. Johansson ◽  
J.D. Wall ◽  
Howard Gest
Keyword(s):  
Nitrogen Assimilation
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