Abstract
Flexible adaptation to different light intensities found in natural environments is crucial for efficient photosynthesis and yield production in crops. The ability to cope with suboptimal light conditions effectively and efficiently is clearly advantageous. In this study, increased photosynthetic ability, biomass accumulation, grain yield and high membrane lipid contents were observed in OsMGD1-overexpression plants of rice and tobacco under both low and high light conditions. Further exploration of the photosynthetic performance and xanthophyll cycle-dependent photoprotection in these transgenic plants revealed that under low light conditions, the overexpression lines maintained high levels of chlorophyll content and light harvesting capability, leading to a high photosynthetic quantum yield. While under high light conditions, the de-epoxidation status of xanthophyll cycle pigments was higher in the overexpression plants, leading to sufficient photoprotection and reduced photo-oxidative damage, resulting in an increased electron transport rate. These results indicate that OsMGD1 is involved in regulating photosynthetic processes when plants are exposed to different light intensities, providing an effective strategy for achieving improved photosynthesis and crop production under variable light conditions in nature.
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Claims 7
Claim · model-written summary
OsMGD1 overexpression increased photosynthetic ability, biomass, yield and membrane lipids in rice under low and high light.
- Taxon
- rice
Oryza sativae0 - Treatment
- OsMGD1-overexpressione0
- Gene
- OsMGD1e0
- Outcome
- photosynthetic ability, biomass accumulation, grain yielde0
- Direction
- increasede0
- Qualifier
- under both low and high light conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased photosynthetic ability, biomass accumulation, grain yield and high membrane lipid contents were observed in OsMGD1-overexpression plants of rice and tobacco under both low and high light conditions”
Claim · model-written summary
OsMGD1 overexpression increased photosynthetic ability, biomass and membrane lipids in tobacco under low and high light.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- OsMGD1-overexpressione0
- Gene
- OsMGD1e0
- Outcome
- photosynthetic ability, biomass accumulatione0
- Direction
- increasede0
- Qualifier
- under both low and high light conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased photosynthetic ability, biomass accumulation, grain yield and high membrane lipid contents were observed in OsMGD1-overexpression plants of rice and tobacco under both low and high light conditions”
Claim · model-written summary
Low-light overexpression lines maintained high chlorophyll and light-harvesting capability, leading to high quantum yield.
- Taxon
- riceOryza sativat0
- Treatment
- overexpression linese0
- Outcome
- photosynthetic quantum yielde0
- Qualifier
- chlorophyll content and light harvesting capabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under low light conditions, the overexpression lines maintained high levels of chlorophyll content and light harvesting capability, leading to a high photosynthetic quantum yield”
t0“Rice”
Claim · model-written summary
Under high light, overexpression plants had greater xanthophyll de-epoxidation.
- Taxon
- riceOryza sativat0
- Treatment
- overexpression plantse0
- Outcome
- de-epoxidation status of xanthophyll cycle pigmentse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under high light conditions, the de-epoxidation status of xanthophyll cycle pigments was higher in the overexpression plants”
t0“Rice”
Claim · model-written summary
High-light photoprotection reduced photo-oxidative damage in overexpression plants.
- Taxon
- riceOryza sativat0
- Outcome
- photo-oxidative damagee0
- Direction
- reducede0
- Qualifier
- photoprotectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leading to sufficient photoprotection and reduced photo-oxidative damage, resulting in an increased electron transport rate”
t0“Rice”
Claim · model-written summary
High-light photoprotection resulted in increased electron transport rate.
- Taxon
- riceOryza sativat0
- Outcome
- electron transport ratee0
- Direction
- increasede0
- Qualifier
- photoprotectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leading to sufficient photoprotection and reduced photo-oxidative damage, resulting in an increased electron transport rate”
t0“Rice”
Claim · model-written summary
OsMGD1 was interpreted as regulating photosynthesis across light intensities.
- Taxon
- riceOryza sativat0
- Gene
- OsMGD1e0
- Outcome
- photosynthetic processese0
- Qualifier
- different light intensitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsMGD1 is involved in regulating photosynthetic processes when plants are exposed to different light intensities”
t0“Rice”