Abstract
Nitrogen-based nutrients are the main factors affecting rice growth and development. As the nitrogen (N) application rate increased, the nitrogen use efficiency (NUE) of rice decreased. Therefore, it is important to understand the molecular mechanism of rice plant morphological, physiological, and yield formation under low N conditions to improve NUE. In this study, changes in the rice morphological, physiological, and yield-related traits under low N (13.33 ppm) and control N (40.00 ppm) conditions were performed. These results show that, compared with control N conditions, photosynthesis and growth were inhibited and the carbon (C)/N and photosynthetic nitrogen use efficiency (PNUE) were enhanced under low N conditions. To understand the post-translational modification mechanism underlying the rice response to low N conditions, comparative phosphoproteomic analysis was performed, and differentially modified proteins (DMPs) were further characterized. Compared with control N conditions, a total of 258 DMPs were identified under low N conditions. The modification of proteins involved in chloroplast development, chlorophyll synthesis, photosynthesis, carbon metabolism, phytohormones, and morphology-related proteins were differentially altered, which was an important reason for changes in rice morphological, physiological, and yield-related traits. Additionally, inconsistent changes in level of transcription and protein modification, indicates that the study of phosphoproteomics under low N conditions is also important for us to better understand the adaptation mechanism of rice to low N stress. These results provide insights into global changes in the response of rice to low N stress and may facilitate the development of rice cultivars with high NUE by regulating the phosphorylation level of carbon metabolism and rice morphology-related proteins.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Low nitrogen inhibited rice photosynthesis.
- Taxon
- rice
Oryza sativat0 - Treatment
- low N conditionse0
- Outcome
- photosynthesise0
- Direction
- inhibitede0
- Comparator
- control N conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with control N conditions, photosynthesis and growth were inhibited and the carbon (C)/N and photosynthetic nitrogen use efficiency (PNUE) were enhanced under low N conditions”
t0“Rice”
Claim · model-written summary
Low nitrogen inhibited rice growth.
- Taxon
- RiceOryza sativat0
- Treatment
- low N conditionse0
- Outcome
- growthe0
- Direction
- inhibitede0
- Comparator
- control N conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with control N conditions, photosynthesis and growth were inhibited and the carbon (C)/N and photosynthetic nitrogen use efficiency (PNUE) were enhanced under low N conditions”
t0“Rice”
Claim · model-written summary
Low nitrogen enhanced rice carbon to nitrogen ratio.
- Taxon
- RiceOryza sativat0
- Treatment
- low N conditionse0
- Outcome
- carbon (C)/Ne0
- Direction
- enhancede0
- Comparator
- control N conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with control N conditions, photosynthesis and growth were inhibited and the carbon (C)/N and photosynthetic nitrogen use efficiency (PNUE) were enhanced under low N conditions”
t0“Rice”
Claim · model-written summary
Low nitrogen enhanced rice photosynthetic nitrogen use efficiency.
- Taxon
- RiceOryza sativat0
- Treatment
- low N conditionse0
- Outcome
- photosynthetic nitrogen use efficiency (PNUE)e0
- Direction
- enhancede0
- Comparator
- control N conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with control N conditions, photosynthesis and growth were inhibited and the carbon (C)/N and photosynthetic nitrogen use efficiency (PNUE) were enhanced under low N conditions”
t0“Rice”
Claim · model-written summary
Low nitrogen yielded 258 differentially modified proteins.
- Taxon
- RiceOryza sativat0
- Treatment
- low N conditionse0
- Outcome
- DMPse0
- Value
- 258e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a total of 258 DMPs were identified under low N conditions”
t0“Rice”
Claim · model-written summary
Protein modifications related to chloroplast development, chlorophyll synthesis, photosynthesis, carbon metabolism, phytohormones and morphology were altered under low nitrogen.
- Taxon
- RiceOryza sativat0
- Outcome
- modification of proteinse0
- Direction
- differentially alterede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The modification of proteins involved in chloroplast development, chlorophyll synthesis, photosynthesis, carbon metabolism, phytohormones, and morphology-related proteins were differentially altered”
t0“Rice”
Claim · model-written summary
Transcription and protein modification changed inconsistently under low nitrogen.
- Taxon
- RiceOryza sativat0
- Outcome
- level of transcription and protein modificatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inconsistent changes in level of transcription and protein modification”
t0“Rice”
The same questions in other papers
nitrogen · physiology: photosynthesis · Oryza sativa (rice)Positive and negative results
80 papers in the same direction as this paper · 13 in the opposite direction · 3 reporting no difference from an alternative
- negative
- negative
- negative
93 papers more in this group
See all 97 papers →nitrogen · molecular: metabolites · Oryza sativa (rice)Positive and negative results
85 papers in the same direction as this paper · 34 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
117 papers more in this group
See all 121 papers →nitrogen · growth · Oryza sativa (rice)Positive and negative results
108 papers in the same direction as this paper · 402 in the opposite direction
- positive
- positive
- positive
507 papers more in this group
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.