Abstract
Field-grown rice plants are exposed to various stresses at different stages of their life cycle, but little is known about the effects of stage-specific stresses on phenomes and transcriptomes. In this study, we performed integrated time-course multiomics on rice at 3-d intervals from seedling to heading stage under six drought conditions in a well-controlled growth chamber. Drought stress at seedling and reproductive stages reduced yield performance by reducing seed number and setting rate, respectively. High temporal resolution analysis revealed that drought response occurred in two steps: a rapid response via the abscisic acid (ABA) signaling pathway and a slightly delayed DEHYDRATION-RESPONSIVE ELEMENT-BINDING PROTEIN (DREB) pathway, allowing plants to respond flexibly to deteriorating soil water conditions. Our long-term time-course multiomics showed that temporary drought stress delayed flowering due to prolonged expression of the flowering repressor gene GRAIN NUMBER, PLANT HEIGHT AND HEADING DATE 7 (Ghd7) and delayed expression of the florigen genes HEADING DATE 3a (Hd3a) and RICE FLOWERING LOCUS T 1 (RFT1). Our life-cycle multiomics dataset on rice shoots under drought conditions provides a valuable resource for further functional genomic studies to improve crop resilience to drought stress.
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Claims 7
Claim · model-written summary
Seedling-stage drought reduced rice yield through reduced seed number.
- Taxon
- Rice
Oryza sativat0 - Treatment
- Drought stress at seedlinge0
- Outcome
- seed numbere0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress at seedling and reproductive stages reduced yield performance by reducing seed number and setting rate, respectively”
t0“Rice”
Claim · model-written summary
Reproductive-stage drought reduced rice yield through reduced setting rate.
- Taxon
- riceOryza sativat0
- Treatment
- reproductive stagese0
- Outcome
- setting ratee0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress at seedling and reproductive stages reduced yield performance by reducing seed number and setting rate, respectively”
t0“Rice”
Claim · model-written summary
Rice drought response included rapid ABA signaling followed by a delayed DREB pathway response.
- Taxon
- RiceOryza sativat0
- Outcome
- drought response occurred in two stepse0
- Qualifier
- a rapid response via the abscisic acid (ABA) signaling pathway and a slightly delayed DEHYDRATION-RESPONSIVE ELEMENT-BINDING PROTEIN (DREB) pathwaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought response occurred in two steps: a rapid response via the abscisic acid (ABA) signaling pathway and a slightly delayed DEHYDRATION-RESPONSIVE ELEMENT-BINDING PROTEIN (DREB) pathway”
t0“Rice”
Claim · model-written summary
Temporary drought delayed flowering in rice.
- Taxon
- RiceOryza sativat0
- Treatment
- temporary drought stresse0
- Outcome
- floweringe0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“temporary drought stress delayed flowering”
t0“Rice”
Claim · model-written summary
Temporary drought prolonged Ghd7 expression.
- Taxon
- RiceOryza sativat0
- Treatment
- temporary drought stresse1
- Gene
- GRAIN NUMBER, PLANT HEIGHT AND HEADING DATE 7 (Ghd7)e0
- Outcome
- expressione0
- Direction
- prolongede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“prolonged expression of the flowering repressor gene GRAIN NUMBER, PLANT HEIGHT AND HEADING DATE 7 (Ghd7)”
e1“temporary drought stress delayed flowering”
t0“Rice”
Claim · model-written summary
Temporary drought delayed expression of Hd3a and RFT1 florigen genes.
- Taxon
- RiceOryza sativat0
- Treatment
- temporary drought stresse1
- Gene
- HEADING DATE 3a (Hd3a) and RICE FLOWERING LOCUS T 1 (RFT1)e0
- Outcome
- expression of the florigen genese0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“delayed expression of the florigen genes HEADING DATE 3a (Hd3a) and RICE FLOWERING LOCUS T 1 (RFT1)”
e1“temporary drought stress delayed flowering”
t0“Rice”
Claim · model-written summary
The rice shoot life-cycle multiomics dataset was provided for drought research.
- Taxon
- riceOryza sativae0
- Outcome
- life-cycle multiomics dataset on rice shoots under drought conditionse0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our life-cycle multiomics dataset on rice shoots under drought conditions provides a valuable resource for further functional genomic studies”
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