Abstract
Nitrogen is a critical nutrient vital for crop growth. However, our current understanding of nitrogen use efficiency (NUE) under drought remains inadequate. To delve into the molecular mechanisms underlying NUE under drought, a transcriptome and physiological co-expression analysis was performed in rice, which is particularly sensitive to drought. We conducted a pot experiment using rice grown under normal irrigation, mild drought stress, and severe drought stress. Compared to the normal treatment, drought stress led to a significant reduction in NUE across growth stages, with decreases ranging from 2.18% to 31.67%. Totals of 4,424 and 2,452 genes were identified as NUE-related DEGs that showed differential expressions (DEGs) and significantly correlated with NUE (NUE-related) under drought in the vegetative and reproductive stages, respectively. Interestingly, five genes involved in nitrogen metabolism were found in the overlapped genes of these two sets. Furthermore, the two sets of NUE-related DEGs were enriched in glyoxylate and dicarboxylate metabolism, as well as carbon fixation in photosynthetic organisms. Several genes in these two pathways were identified as hub genes in the two sets of NUE-related DEGs. This study offers new insights into the molecular mechanism of rice NUE under drought in agricultural practices and provides potential genes for breeding drought-resistant crops with high NUE.
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Claims 6
Claim · model-written summary
Drought stress significantly reduced rice NUE across growth stages, by 2.18% to 31.67% compared with normal irrigation.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- growth stagese1
- Treatment
- drought stresse1
- Outcome
- NUEe1
- Direction
- reductione1
- Value
- 2.18% to 31.67%e1
- Comparator
- normal treatmente1
- Setting
- pot experimente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“An integrated transcriptome and physiological analysis of nitrogen use efficiency in rice (Oryza sativa L. ssp. indica) under drought stress”
e1“Compared to the normal treatment, drought stress led to a significant reduction in NUE across growth stages, with decreases ranging from 2.18% to 31.67%”
e2“We conducted a pot experiment using rice grown under normal irrigation, mild drought stress, and severe drought stress”
Claim · model-written summary
In the vegetative stage, 4,424 genes were identified as NUE-related DEGs under drought.
- Taxon
- riceOryza sativat0
- Organ / stage
- vegetativee3
- Treatment
- droughte3
- Outcome
- NUE-related DEGse3
- Value
- 4,424e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“An integrated transcriptome and physiological analysis of nitrogen use efficiency in rice (Oryza sativa L. ssp. indica) under drought stress”
e3“Totals of 4,424 and 2,452 genes were identified as NUE-related DEGs that showed differential expressions (DEGs) and significantly correlated with NUE (NUE-related) under drought in the vegetative and reproductive stages, respectively”
Claim · model-written summary
In the reproductive stage, 2,452 genes were identified as NUE-related DEGs under drought.
- Taxon
- riceOryza sativat0
- Organ / stage
- reproductivee3
- Treatment
- droughte3
- Outcome
- NUE-related DEGse3
- Value
- 2,452e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“An integrated transcriptome and physiological analysis of nitrogen use efficiency in rice (Oryza sativa L. ssp. indica) under drought stress”
e3“Totals of 4,424 and 2,452 genes were identified as NUE-related DEGs that showed differential expressions (DEGs) and significantly correlated with NUE (NUE-related) under drought in the vegetative and reproductive stages, respectively”
Claim · model-written summary
Five genes involved in nitrogen metabolism were shared by the two sets of NUE-related DEGs.
- Taxon
- riceOryza sativat0
- Outcome
- genes involved in nitrogen metabolisme4
- Value
- fivee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“An integrated transcriptome and physiological analysis of nitrogen use efficiency in rice (Oryza sativa L. ssp. indica) under drought stress”
e4“five genes involved in nitrogen metabolism were found in the overlapped genes of these two sets”
Claim · model-written summary
The two sets of NUE-related DEGs were enriched in glyoxylate and dicarboxylate metabolism and in carbon fixation in photosynthetic organisms.
- Taxon
- riceOryza sativat0
- Outcome
- glyoxylate and dicarboxylate metabolism, as well as carbon fixation in photosynthetic organismse5
- Direction
- enrichede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“An integrated transcriptome and physiological analysis of nitrogen use efficiency in rice (Oryza sativa L. ssp. indica) under drought stress”
e5“the two sets of NUE-related DEGs were enriched in glyoxylate and dicarboxylate metabolism, as well as carbon fixation in photosynthetic organisms”
Claim · model-written summary
Several genes in these two pathways were identified as hub genes of the NUE-related DEG sets in rice.
- Taxon
- riceOryza sativat0
- Outcome
- hub genese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“An integrated transcriptome and physiological analysis of nitrogen use efficiency in rice (Oryza sativa L. ssp. indica) under drought stress”
e6“Several genes in these two pathways were identified as hub genes in the two sets of NUE-related DEGs”
The same questions in other papers
drought · nutrient: efficiency · Oryza sativa (rice)Positive and negative results
1 in the opposite direction
- positive
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.