Abstract
Sorghum (Sorghum sudangrass) plants were treated with 5, 20 and 50 mM of Nitrogen (Nitrate or Ammonium). Growth parameters (length, dry weight and fresh weight), biochemistry parameters (proteins, amino acids and chlorophyll content) and activities of enzymes involved in nitrogen metabolism such as: Nitrate reductase (NR), Glutamine synthetase (GS) and glutamate dehydrogenase (GDH) were studied in the leaves and roots after 20 days of N exposure. Results showed that sorghum plants exhibited enhanced biomass production under high levels of inorganic nitrogen supply. Biochemistry parameters increased with increasing nitrogen concentration in roots and leaves especially in ammonium-treated plants. Exogenous nitrate but not ammonium induced significant difference in the leaves and roots nitrate reductase activity when compared with control plants (0.5 mM nitrate). While Glutamine synthetase 1 activity and protein accumulated in roots at increasing concentration of either nitrate or ammonium, particularly in ammonium-treated plants, glutamine synthetase 2 protein was more accumulated in leaves of nitrate-treated plants. Glutamate dehydrogenase activity was enhanced in both organs by increasing N source in the culture medium this increase is more pronounced in presence of ammonium. This data showed that sorghum plants exhibited higher adaptive potential under excessive concentration of ammonium by ability to detoxify this ion via nitrogen assimilation in roots.
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Claims 8
Claim · model-written summary
High levels of inorganic nitrogen supply enhanced biomass production of sorghum.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum (Sorghum sudangrass) plants were treated with 5, 20 and 50 mM of Nitrogen”
e1“sorghum plants exhibited enhanced biomass production under high levels of inorganic nitrogen supply”
Claim · model-written summary
Biochemistry parameters of sorghum increased with nitrogen concentration in roots and leaves, especially under ammonium.
- Organ / stage
- roots and leavese2
- Treatment
- increasing nitrogen concentratione2
- Outcome
- Biochemistry parameterse2
- Direction
- increasede2
- Qualifier
- especially in ammonium-treated plantse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum (Sorghum sudangrass) plants were treated with 5, 20 and 50 mM of Nitrogen”
e2“Biochemistry parameters increased with increasing nitrogen concentration in roots and leaves especially in ammonium-treated plants”
Claim · model-written summary
Exogenous nitrate induced a significant difference in nitrate reductase activity in leaves and roots compared with control plants (0.5 mM nitrate).
- Organ / stage
- leaves and rootse3
- Treatment
- Exogenous nitratee3
- Outcome
- nitrate reductase activitye3
- Direction
- inducede3
- Comparator
- control plants (0.5 mM nitrate)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum (Sorghum sudangrass) plants were treated with 5, 20 and 50 mM of Nitrogen”
e3“Exogenous nitrate but not ammonium induced significant difference in the leaves and roots nitrate reductase activity when compared with control plants (0.5 mM nitrate)”
Claim · model-written summary
Ammonium did not change nitrate reductase activity significantly in leaves or roots compared with control plants (0.5 mM nitrate).
- Treatment
- ammoniume4
- Outcome
- nitrate reductase activitye3
- Direction
- no_changeinferrede4
- Comparator
- control plants (0.5 mM nitrate)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum (Sorghum sudangrass) plants were treated with 5, 20 and 50 mM of Nitrogen”
e3“Exogenous nitrate but not ammonium induced significant difference in the leaves and roots nitrate reductase activity when compared with control plants (0.5 mM nitrate)”
e4“but not ammonium induced significant difference”
Claim · model-written summary
Glutamine synthetase 1 activity and protein accumulated in sorghum roots with increasing nitrogen concentration of either nitrate or ammonium.
- Organ / stage
- rootse5
- Treatment
- increasing concentration of either nitrate or ammoniume5
- Gene
- Glutamine synthetase 1e5
- Outcome
- activity and proteine5
- Direction
- accumulatede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum (Sorghum sudangrass) plants were treated with 5, 20 and 50 mM of Nitrogen”
e5“While Glutamine synthetase 1 activity and protein accumulated in roots at increasing concentration of either nitrate or ammonium”
Claim · model-written summary
Glutamine synthetase 2 protein was more accumulated in leaves of nitrate-treated sorghum plants.
- Organ / stage
- leavese6
- Treatment
- nitrate-treated plantse6
- Gene
- glutamine synthetase 2e6
- Outcome
- proteine6
- Direction
- more accumulatede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum (Sorghum sudangrass) plants were treated with 5, 20 and 50 mM of Nitrogen”
e6“glutamine synthetase 2 protein was more accumulated in leaves of nitrate-treated plants”
Claim · model-written summary
Glutamate dehydrogenase activity in sorghum was enhanced in both organs by increasing N source, more so with ammonium.
- Organ / stage
- both organse7
- Treatment
- increasing N sourcee7
- Gene
- Glutamate dehydrogenasee7
- Outcome
- activitye7
- Direction
- enhancede7
- Qualifier
- more pronounced in presence of ammoniume6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum (Sorghum sudangrass) plants were treated with 5, 20 and 50 mM of Nitrogen”
e7“Glutamate dehydrogenase activity was enhanced in both organs by increasing N source in the culture medium”
e6“this increase is more pronounced in presence of ammonium”
Claim · model-written summary
Sorghum has a higher adaptive potential under excess ammonium because it detoxifies ammonium through nitrogen assimilation in roots.
- Organ / stage
- rootse1
- Treatment
- excessive concentration of ammoniume1
- Outcome
- adaptive potentiale1
- Qualifier
- ability to detoxify this ion via nitrogen assimilatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum (Sorghum sudangrass) plants were treated with 5, 20 and 50 mM of Nitrogen”
e1“sorghum plants exhibited higher adaptive potential under excessive concentration of ammonium by ability to detoxify this ion via nitrogen assimilation in roots”
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See all 290 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.