Abstract
The absorption, transport, and assimilation mechanism of organic and inorganic nitrogen(N) in rice organs were analyzed by applying 13 C-15 N dual-labeled organic and inorganic N directly to the leaves of rice plants (variety: C Liangyou 266) at tillering stage based on isotope tracing. The findings suggest that the dry weight and N accumulation of various rice organs under glycine N and ammonium N treatments were significantly higher than other treatments; the dry weight and N accumulation in rice organs followed the pattern of "leaf > root > stem", and there were no significant differences between control and nitrate N treatment. The 15 N increments were detected in the roots, stems and leaves of all treatments, showing a certain pattern of "leaf > stem > root"; there were significant differences between the 15 N increments of various organs (P < 0.01). The 13 C increment/ 15 N increment ratios of rice root, stem, leaf, and whole plant were 0.108, 0.158, 0.178, and 0.161 respectively. For rice plants treated by glycine N and ammonium N, the activity of GOT, GPT and GDH peaked in leaves, followed by stems and then roots; while the pattern of activity for GOT, GPT and GDH in the control (Ck) and nitrate N group was in following order "leaf > root > stem". The results showed that rice leaves directly absorb and utilize molecular glycine and the absorption rate of glycine is significantly higher than ammonium N or nitrate N. Molecular organic N absorbed into rice leaves would be transported to roots; the transportability of N in rice plants ranked in descending order is as follows: amino acid N > ammonium N > nitrate N.
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Claims 19
Claim · model-written summary
Glycine nitrogen increased rice organ dry weight relative to other treatments.
- Taxon
- Rice
Oryza sativat0 - Treatment
- glycine Ne0
- Outcome
- dry weighte0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight and N accumulation of various rice organs under glycine N and ammonium N treatments were significantly higher than other treatments”
t0“Rice”
Claim · model-written summary
Ammonium nitrogen increased rice organ dry weight relative to other treatments.
- Taxon
- RiceOryza sativat0
- Treatment
- ammonium Ne0
- Outcome
- dry weighte0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight and N accumulation of various rice organs under glycine N and ammonium N treatments were significantly higher than other treatments”
t0“Rice”
Claim · model-written summary
Glycine nitrogen increased rice organ nitrogen accumulation relative to other treatments.
- Taxon
- RiceOryza sativat0
- Treatment
- glycine Ne0
- Outcome
- N accumulatione0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight and N accumulation of various rice organs under glycine N and ammonium N treatments were significantly higher than other treatments”
t0“Rice”
Claim · model-written summary
Ammonium nitrogen increased rice organ nitrogen accumulation relative to other treatments.
- Taxon
- RiceOryza sativat0
- Treatment
- ammonium Ne0
- Outcome
- N accumulatione0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight and N accumulation of various rice organs under glycine N and ammonium N treatments were significantly higher than other treatments”
t0“Rice”
Claim · model-written summary
Organ dry weight and nitrogen accumulation ranked leaf above root above stem.
- Taxon
- riceOryza sativae0
- Organ / stage
- leaf > root > steme0
- Outcome
- dry weight and N accumulatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight and N accumulation in rice organs followed the pattern of "leaf > root > stem"”
Claim · model-written summary
Control and nitrate nitrogen did not differ significantly.
- Taxon
- RiceOryza sativat0
- Treatment
- nitrate N treatmente0
- Outcome
- differencese0
- Direction
- no significant differencese0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no significant differences between control and nitrate N treatment”
t0“Rice”
Claim · model-written summary
Nitrogen-15 increments occurred in rice roots, stems and leaves in all treatments.
- Taxon
- RiceOryza sativat0
- Organ / stage
- roots, stems and leavese0
- Outcome
- 15 N incrementse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 15 N increments were detected in the roots, stems and leaves of all treatments”
t0“Rice”
Claim · model-written summary
Nitrogen-15 increments ranked leaf above stem above root and differed significantly among organs.
- Taxon
- RiceOryza sativat0
- Organ / stage
- leaf > stem > roote0
- Outcome
- 15 N incrementse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“showing a certain pattern of "leaf > stem > root"; there were significant differences between the 15 N increments of various organs (P < 0.01)”
t0“Rice”
Claim · model-written summary
Rice root carbon-13 to nitrogen-15 increment ratio was 0.108.
- Taxon
- riceOryza sativae0
- Organ / stage
- roote0
- Outcome
- 13 C increment/ 15 N increment ratiose0
- Value
- 0.108e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 13 C increment/ 15 N increment ratios of rice root, stem, leaf, and whole plant were 0.108, 0.158, 0.178, and 0.161 respectively”
Claim · model-written summary
Rice stem carbon-13 to nitrogen-15 increment ratio was 0.158.
- Taxon
- riceOryza sativae0
- Organ / stage
- steme0
- Outcome
- 13 C increment/ 15 N increment ratiose0
- Value
- 0.158e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 13 C increment/ 15 N increment ratios of rice root, stem, leaf, and whole plant were 0.108, 0.158, 0.178, and 0.161 respectively”
Claim · model-written summary
Rice leaf carbon-13 to nitrogen-15 increment ratio was 0.178.
- Taxon
- riceOryza sativae0
- Organ / stage
- leafe0
- Outcome
- 13 C increment/ 15 N increment ratiose0
- Value
- 0.178e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 13 C increment/ 15 N increment ratios of rice root, stem, leaf, and whole plant were 0.108, 0.158, 0.178, and 0.161 respectively”
Claim · model-written summary
Whole-plant carbon-13 to nitrogen-15 increment ratio was 0.161.
- Taxon
- riceOryza sativae0
- Organ / stage
- whole plante0
- Outcome
- 13 C increment/ 15 N increment ratiose0
- Value
- 0.161e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 13 C increment/ 15 N increment ratios of rice root, stem, leaf, and whole plant were 0.108, 0.158, 0.178, and 0.161 respectively”
Claim · model-written summary
Under glycine nitrogen, GOT, GPT and GDH activity peaked in leaves, then stems, then roots.
- Taxon
- riceOryza sativae0
- Organ / stage
- leavese0
- Treatment
- glycine Ne0
- Outcome
- activity of GOT, GPT and GDHe0
- Direction
- peakede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For rice plants treated by glycine N and ammonium N, the activity of GOT, GPT and GDH peaked in leaves, followed by stems and then roots”
Claim · model-written summary
Under ammonium nitrogen, GOT, GPT and GDH activity peaked in leaves, then stems, then roots.
- Taxon
- riceOryza sativae0
- Organ / stage
- leavese0
- Treatment
- ammonium Ne0
- Outcome
- activity of GOT, GPT and GDHe0
- Direction
- peakede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For rice plants treated by glycine N and ammonium N, the activity of GOT, GPT and GDH peaked in leaves, followed by stems and then roots”
Claim · model-written summary
Control and nitrate groups ranked enzyme activity leaf above root above stem.
- Taxon
- RiceOryza sativat0
- Organ / stage
- leaf > root > steme0
- Treatment
- nitrate Ne0
- Outcome
- activity for GOT, GPT and GDHe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pattern of activity for GOT, GPT and GDH in the control (Ck) and nitrate N group was in following order "leaf > root > stem"”
t0“Rice”
Claim · model-written summary
Rice leaves directly absorbed and utilized molecular glycine.
- Taxon
- riceOryza sativae0
- Organ / stage
- leavese0
- Outcome
- absorb and utilize molecular glycinee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice leaves directly absorb and utilize molecular glycine”
Claim · model-written summary
Glycine absorption rate exceeded ammonium and nitrate nitrogen.
- Taxon
- RiceOryza sativat0
- Treatment
- glycinee0
- Outcome
- absorption rate of glycinee0
- Direction
- highere0
- Comparator
- ammonium N or nitrate Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the absorption rate of glycine is significantly higher than ammonium N or nitrate N”
t0“Rice”
Claim · model-written summary
Molecular organic nitrogen absorbed in rice leaves was transported to roots.
- Taxon
- riceOryza sativae0
- Organ / stage
- leavese0
- Outcome
- transported to rootse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Molecular organic N absorbed into rice leaves would be transported to roots”
Claim · model-written summary
Nitrogen transportability ranked amino acid above ammonium above nitrate.
- Taxon
- riceOryza sativae0
- Outcome
- transportability of Ne0
- Direction
- descending ordere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transportability of N in rice plants ranked in descending order is as follows: amino acid N > ammonium N > nitrate N”
The same questions in other papers
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401 papers in the same direction as this paper · 101 in the opposite direction · 8 reporting no difference from an alternative
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See all 511 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.