Abstract
Submergence stress is a limiting factor for rice growing in rainfed lowland areas of the world. It is known that the phytohormone gibberellin (GA) has negative effects on submergence tolerance in rice, while its inhibitor paclobutrazol (PB) does the opposite. However, the physiological and molecular basis underlying the GA- and PB-regulated submergence response remains largely unknown. In this study, we reveal that PB could significantly enhance rice seedling survival by retaining a higher level of chlorophyll content and alcohol dehydrogenase activity, and decelerating the consumption of non-structure carbohydrate when compared with the control and GA-treated samples. Further transcriptomic analysis identified 3936 differentially expressed genes (DEGs) among the GA- and PB-treated samples and control, which are extensively involved in the submergence and other abiotic stress responses, phytohormone biosynthesis and signaling, photosynthesis, and nutrient metabolism. The results suggested that PB enhances rice survival under submergence through maintaining the photosynthesis capacity and reducing nutrient metabolism. Taken together, the current study provided new insight into the mechanism of phytohormone-regulated submergence response in rice.
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Claims 6
Claim · model-written summary
Paclobutrazol significantly enhanced submerged rice seedling survival compared with control and gibberellin treatment.
- Taxon
- rice
Oryza sativae0 - Treatment
- PBe0
- Outcome
- rice seedling survivale0
- Direction
- enhancee0
- Comparator
- the control and GA-treated samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PB could significantly enhance rice seedling survival by retaining a higher level of chlorophyll content and alcohol dehydrogenase activity, and decelerating the consumption of non-structure carbohydrate when compared with the control and GA-treated samples.”
Claim · model-written summary
Paclobutrazol retained higher chlorophyll content.
- Taxon
- riceOryza sativae0
- Treatment
- PBe0
- Outcome
- chlorophyll contente0
- Direction
- highere0
- Comparator
- the control and GA-treated samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PB could significantly enhance rice seedling survival by retaining a higher level of chlorophyll content and alcohol dehydrogenase activity, and decelerating the consumption of non-structure carbohydrate when compared with the control and GA-treated samples.”
Claim · model-written summary
Paclobutrazol retained higher alcohol dehydrogenase activity.
- Taxon
- riceOryza sativae0
- Treatment
- PBe0
- Gene
- alcohol dehydrogenasee0
- Outcome
- alcohol dehydrogenase activitye0
- Direction
- highere0
- Comparator
- the control and GA-treated samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PB could significantly enhance rice seedling survival by retaining a higher level of chlorophyll content and alcohol dehydrogenase activity, and decelerating the consumption of non-structure carbohydrate when compared with the control and GA-treated samples.”
Claim · model-written summary
Paclobutrazol slowed non-structural carbohydrate consumption.
- Taxon
- riceOryza sativae0
- Treatment
- PBe0
- Outcome
- consumption of non-structure carbohydratee0
- Direction
- deceleratinge0
- Comparator
- the control and GA-treated samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PB could significantly enhance rice seedling survival by retaining a higher level of chlorophyll content and alcohol dehydrogenase activity, and decelerating the consumption of non-structure carbohydrate when compared with the control and GA-treated samples.”
Claim · model-written summary
Transcriptomic analysis identified 3936 differentially expressed genes among GA, PB and control rice seedlings.
Not reportedTaxon
Verbatim
e0“identified 3936 differentially expressed genes (DEGs) among the GA- and PB-treated samples and control”
Claim · model-written summary
Paclobutrazol was proposed to enhance submerged rice survival by maintaining photosynthesis and reducing nutrient metabolism.
- Taxon
- riceOryza sativae0
- Treatment
- PBe0
- Outcome
- rice survival under submergencee0
- Qualifier
- maintaining the photosynthesis capacity and reducing nutrient metabolisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PB enhances rice survival under submergence through maintaining the photosynthesis capacity and reducing nutrient metabolism.”
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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.