scholarly journals Urease Is Not Essential for Ureide Degradation in Soybean

1995 ◽  
Vol 109 (1) ◽  
pp. 169-175 ◽  
Author(s):  
N. E. Stebbins ◽  
J. C. Polacco
Keyword(s):  
Ureide Degradation

scholarly journals Ureide degradation pathways in intact soybean leaves 1

2000 ◽  
Vol 51 (349) ◽  
pp. 1459-1465 ◽  
Author(s):  
V. Vadez ◽  
T.R. Sinclair
Keyword(s):  
Degradation Pathways ◽  
Soybean Leaves ◽  
Ureide Degradation

scholarly journals Update on ureide degradation in legumes

2005 ◽  
Vol 57 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Christopher D. Todd ◽  
Peter A. Tipton ◽  
Dale G. Blevins ◽  
Pedro Piedras ◽  
Manuel Pineda ◽  
...  
Keyword(s):  
Ureide Degradation

Ureide degradation pathways in intact soybean leaves1

2000 ◽  
Vol 51 (349) ◽  
pp. 1459-1465 ◽  
Author(s):  
V. Vadez ◽  
T.R. Sinclair
Keyword(s):  
Degradation Pathways ◽  
Ureide Degradation

scholarly journals Application of Nitrate, Ammonium, or Urea Changes the Concentrations of Ureides, Urea, Amino Acids and Other Metabolites in Xylem Sap and in the Organs of Soybean Plants (Glycine max (L.) Merr.)

2021 ◽  
Vol 22 (9) ◽  
pp. 4573
Author(s):  
Yuki Ono ◽  
Masashige Fukasawa ◽  
Kuni Sueyoshi ◽  
Norikuni Ohtake ◽  
Takashi Sato ◽  
...  
Keyword(s):  
Glycine Max ◽  
Root Nodules ◽  
Xylem Sap ◽  
Nitrate Treatment ◽  
First Finding ◽  
Metabolite Concentrations ◽  
Glycine Max L ◽  
Soybean Plants ◽  
Positive Correlations ◽  
Ureide Degradation

Soybean (Glycine max (L.) Merr.) plants form root nodules and fix atmospheric dinitrogen, while also utilizing the combined nitrogen absorbed from roots. In this study, nodulated soybean plants were supplied with 5 mM N nitrate, ammonium, or urea for 3 days, and the changes in metabolite concentrations in the xylem sap and each organ were analyzed. The ureide concentration in the xylem sap was the highest in the control plants that were supplied with an N-free nutrient solution, but nitrate and asparagine were the principal compounds in the xylem sap with nitrate treatment. The metabolite concentrations in both the xylem sap and each organ were similar between the ammonium and urea treatments. Considerable amounts of urea were present in the xylem sap and all the organs among all the treatments. Positive correlations were observed between the ureides and urea concentrations in the xylem sap as well as in the roots and leaves, although no correlations were observed between the urea and arginine concentrations, suggesting that urea may have originated from ureide degradation in soybean plants, possibly in the roots. This is the first finding of the possibility of ureide degradation to urea in the underground organs of soybean plants.

scholarly journals A New Perspective on the Role of Glutamine Synthetase in Nitrogen Remobilization in Wheat (Triticum aestivum L.)

2021 ◽  
Vol 22 (20) ◽  
pp. 11083
Author(s):  
Yihao Wei ◽  
Lulu Wang ◽  
Butan Qin ◽  
Huiqiang Li ◽  
Xiaoran Wang ◽  
...  
Keyword(s):  
Glutamine Synthetase ◽  
Vascular System ◽  
Grain Filling ◽  
Triticum Aestivum L ◽  
Nitrogen Remobilization ◽  
Plant Nitrogen ◽  
Key Enzyme ◽  
N Remobilization ◽  
New Perspective ◽  
Ureide Degradation

Glutamine synthetase (GS), a key enzyme in plant nitrogen metabolism, is closely related to nitrogen remobilization. However, how GS isoforms participate in nitrogen remobilization remains unclear. Here, the spatiotemporal expression of the TaGS gene family after anthesis was investigated, and the results showed that TaGS1;1 was mainly encoded by TaGS1;1-6A, while the other isozymes were mainly encoded by TaGS localized on the A and D subgenomes. TaGS1;2-4A/4D had the highest expression level, especially in rachis and peduncle. Furthermore, immunofluorescence showed TaGS1;2 was located in the phloem of rachis and peduncle. GUS (β-glucuronidase) staining confirmed that ProTaGS1;2-4A/4D::GUS activity was mainly present in the vascular system of leaves, roots, and petal of Arabidopsis. Ureides, an important transport form of nitrogen, were mainly synthesized in flag leaves and transported to grains through the phloem of peduncle and rachis during grain filling. TaAAH, which encodes the enzyme that degrades ureides to release NH4+, had a higher expression in rachis and peduncle and was synchronized with the increase in NH4+ concentration in phloem, indicating that NH4+ in phloem is from ureide degradation. Taking the above into account, TaGS1;2, which is highly expressed in the phloem of peduncle and rachis, may participate in N remobilization by assimilating NH4+ released from ureide degradation.

scholarly journals Leaf ureide degradation and N 2 fixation tolerance to water deficit in soybean 1

2001 ◽  
Vol 52 (354) ◽  
pp. 153-159
Author(s):  
Vincent Vadez ◽  
Thomas R. Sinclair
Keyword(s):  
Water Deficit ◽  
Ureide Degradation

scholarly journals Disruption of ureide degradation affects plant growth and development during and after transition from vegetative to reproductive stages

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Hiroshi Takagi ◽  
Shunsuke Watanabe ◽  
Shoma Tanaka ◽  
Takakazu Matsuura ◽  
Izumi C. Mori ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Plant Growth And Development ◽  
Ureide Degradation
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