Abstract
Two light treatments [ambient sunlight (L1) during the entire growth period and 40% shade (L2) from 40 d after sowing until 24 d after flowering] and two phosphate fertilizer treatments [no phosphate fertilizer application (P0) and a conventional phosphate fertilizer application (P1)] were used to determine how phosphate fertilizer regulates soybean [Glycine max (L.) Merr.] photosynthesis under shading. We showed that phosphorus significantly increased chlorophyll content and grain yield under shading. The light-saturated net photosynthetic rate, apparent quantum yield, maximum electron transport rate, and maximum Rubisco carboxylation rate in P1 under L2 significantly increased. Moreover, phosphate fertilizer significantly improved the electron transfer and PSII reaction center performance under shading. Therefore, phosphate fertilizer increases low light-utilization efficiency by improving PSII performance, promoting ribulose-1,5-bisphosphate regeneration, ensuring a source of carboxylate substrates, and coordinating the balance between photochemical reaction and Calvin cycle under shading.
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Claims 6
Claim · model-written summary
Phosphorus increased chlorophyll content in shaded soybean.
- Taxon
- soybean
Glycine maxt0 - Treatment
- phosphoruse0
- Outcome
- chlorophyll contente0
- Direction
- increasede0
- Qualifier
- under shadinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphorus significantly increased chlorophyll content and grain yield under shading”
t0“soybean”
Claim · model-written summary
Phosphorus increased grain yield in shaded soybean.
- Taxon
- soybeanGlycine maxt0
- Treatment
- phosphoruse0
- Outcome
- grain yielde0
- Direction
- increasede0
- Qualifier
- under shadinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphorus significantly increased chlorophyll content and grain yield under shading”
t0“soybean”
Claim · model-written summary
P1 under L2 increased light-saturated net photosynthetic rate, apparent quantum yield, and maximum electron transport rate.
- Taxon
- soybeanGlycine maxt0
- Treatment
- P1 under L2e0
- Outcome
- light-saturated net photosynthetic rate, apparent quantum yield, maximum electron transport ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The light-saturated net photosynthetic rate, apparent quantum yield, maximum electron transport rate, and maximum Rubisco carboxylation rate in P1 under L2 significantly increased”
t0“soybean”
Claim · model-written summary
P1 under L2 increased maximum Rubisco carboxylation rate.
- Taxon
- soybeanGlycine maxt0
- Treatment
- P1 under L2e0
- Outcome
- maximum Rubisco carboxylation ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum Rubisco carboxylation rate in P1 under L2 significantly increased”
t0“soybean”
Claim · model-written summary
Phosphate fertilizer improved electron transfer and PSII reaction center performance under shading.
- Taxon
- soybeanGlycine maxt0
- Treatment
- phosphate fertilizere0
- Outcome
- electron transfer and PSII reaction center performancee0
- Direction
- improvede0
- Qualifier
- under shadinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphate fertilizer significantly improved the electron transfer and PSII reaction center performance under shading”
t0“soybean”
Claim · model-written summary
The authors infer that phosphate fertilizer increases low light utilization efficiency through improved PSII performance, ribulose-1,5-bisphosphate regeneration, carboxylate substrate supply and photochemical–Calvin cycle balance.
- Taxon
- soybeanGlycine maxt0
- Treatment
- phosphate fertilizere0
- Outcome
- low light-utilization efficiencye0
- Direction
- increasese0
- Qualifier
- improving PSII performance, promoting ribulose-1,5-bisphosphate regeneration, ensuring a source of carboxylate substrates, and coordinating the balance between photochemical reaction and Calvin cycle under shadinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphate fertilizer increases low light-utilization efficiency by improving PSII performance, promoting ribulose-1,5-bisphosphate regeneration, ensuring a source of carboxylate substrates, and coordinating the balance between photochemical reaction and Calvin cycle under shading”
t0“soybean”
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