Abstract
The regulatory effects of uneven phosphorus supplies on phosphorus transport in soybean roots are still unclear. To further analyze the regulatory effects of low-phosphorus stress on phosphorus transport in soybean roots and the effects of uneven phosphorus application on the physiological mechanism of phosphorus transport in soybean roots, dual-root soybean plants were prepared via grafting, and a sand culture experiment was performed. From the unfolded cotyledon stage to the initial flowering stage, one side of each dual-root soybean system was irrigated with a low-phosphorus-concentration solution (phosphorus-application [P+] side), and the other side was irrigated with a phosphorus-free nutrient solution (phosphorus-free [P-] side); this setup allowed the study of the effects of different phosphorus supply levels on the expression of genes and proteins and the accumulation of metabolites in soybean roots on the P- side to clarify the method through which phosphorus transport is regulated in soybean roots and to provide a theoretical basis for improving the use rate of phosphorus fertilizer. The results revealed that the unilateral supply of low-concentration phosphorus promoted the uptake of phosphorus by soybean roots and the transport of phosphorus from the P+ side to the P- side. Compared with the normal concentration of phosphorus supply and the phosphorus-free supply, the low concentration phosphorus supply affected the regulation of the metabolic pathways involved in starch and sucrose metabolism, glycolysis, fructose, and mannose metabolism, etc., thereby affecting soybean root phosphorus transport. The low-phosphorus stress inhibited fructose synthesis and sucrose synthase synthesis in the soybean roots and the synthesis of hexokinase (HK) and fructose kinase, which catalyzes the conversion of fructose to fructose-6-phosphate. Low-phosphorus stress promoted the synthesis of sucrose invertase and the conversion of sucrose into maltose by the activity of starch synthase (StS) and stimulated the synthesis of UDPG pyrophosphorylase (UGP) and phosphoglucose isomerase (GP1), which is involved in the conversion of UDP-glucose to glucose-6-phosphate. The phosphorus transport pathway of soybean roots was then affected, which promoted phosphorus allocation to UTP and glucose-6-phosphate. Additionally, low-phosphorus stress hastened glycolysis in the soybean roots and inhibited the synthesis of malic acid, thereby promoting the transport of phosphorus in the roots. In addition, low-phosphorus stress inhibited the synthesis of fructose, mannose, and mannose-1-phosphate and the synthesis of other enzymes involved in phosphorus transport as well as invertase, thereby inhibiting the transport and synthesis of several organic phosphorus-containing compounds.
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Claims 12
Claim · model-written summary
Unilateral low phosphorus supply promoted soybean root phosphorus uptake and transport from P+ to P- roots.
- Taxon
- soybean
Glycine maxe0 - Treatment
- unilateral supply of low-concentration phosphoruse0
- Outcome
- uptake of phosphoruse0
- Direction
- promotede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results revealed that the unilateral supply of low-concentration phosphorus promoted the uptake of phosphorus by soybean roots and the transport of phosphorus from the P+ side to the P- side.”
Claim · model-written summary
Low phosphorus supply affected starch and sucrose, glycolysis, fructose, and mannose metabolic pathways.
- Taxon
- soybeanGlycine maxe1
- Outcome
- metabolic pathwayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the low concentration phosphorus supply affected the regulation of the metabolic pathways involved in starch and sucrose metabolism, glycolysis, fructose, and mannose metabolism”
e1“The regulatory effects of uneven phosphorus supplies on phosphorus transport in soybean roots are still unclear.”
Claim · model-written summary
Low phosphorus stress inhibited fructose and sucrose synthase synthesis.
- Taxon
- soybeanGlycine maxe0
- Treatment
- low-phosphorus stresse0
- Outcome
- fructose synthesis and sucrose synthase synthesise0
- Direction
- inhibitede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The low-phosphorus stress inhibited fructose synthesis and sucrose synthase synthesis in the soybean roots”
Claim · model-written summary
Low phosphorus stress inhibited hexokinase and fructose kinase synthesis.
- Taxon
- soybeanGlycine maxe1
- Treatment
- low-phosphorus stresse2
- Outcome
- synthesis of hexokinase (HK) and fructose kinasee0
- Direction
- inhibitede2
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the synthesis of hexokinase (HK) and fructose kinase, which catalyzes the conversion of fructose to fructose-6-phosphate.”
e1“The regulatory effects of uneven phosphorus supplies on phosphorus transport in soybean roots are still unclear.”
e2“low-phosphorus stress inhibited the synthesis of fructose”
Claim · model-written summary
Low phosphorus stress promoted sucrose invertase synthesis.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Low-phosphorus stresse0
- Outcome
- synthesis of sucrose invertasee0
- Direction
- promotede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low-phosphorus stress promoted the synthesis of sucrose invertase”
e1“The regulatory effects of uneven phosphorus supplies on phosphorus transport in soybean roots are still unclear.”
Claim · model-written summary
Starch synthase activity promoted sucrose to maltose conversion.
- Taxon
- soybeanGlycine maxe1
- Outcome
- conversion of sucrose into maltosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the conversion of sucrose into maltose by the activity of starch synthase (StS)”
e1“The regulatory effects of uneven phosphorus supplies on phosphorus transport in soybean roots are still unclear.”
Claim · model-written summary
Low phosphorus stress stimulated UDPG pyrophosphorylase and phosphoglucose isomerase synthesis.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Low-phosphorus stresse2
- Outcome
- synthesis of UDPG pyrophosphorylase (UGP) and phosphoglucose isomerase (GP1)e0
- Direction
- stimulatede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stimulated the synthesis of UDPG pyrophosphorylase (UGP) and phosphoglucose isomerase (GP1)”
e1“The regulatory effects of uneven phosphorus supplies on phosphorus transport in soybean roots are still unclear.”
e2“low-phosphorus stress inhibited the synthesis of fructose”
Claim · model-written summary
The affected phosphorus transport pathway promoted phosphorus allocation to UTP and glucose-6-phosphate.
- Taxon
- soybeanGlycine maxe0
- Outcome
- phosphorus allocation to UTP and glucose-6-phosphatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The phosphorus transport pathway of soybean roots was then affected, which promoted phosphorus allocation to UTP and glucose-6-phosphate.”
Claim · model-written summary
Low phosphorus stress hastened glycolysis in soybean roots.
- Taxon
- soybeanGlycine maxe0
- Treatment
- low-phosphorus stresse0
- Outcome
- glycolysise0
- Direction
- hastenede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low-phosphorus stress hastened glycolysis in the soybean roots”
Claim · model-written summary
Low phosphorus stress inhibited malic acid synthesis and promoted phosphorus transport.
- Taxon
- soybeanGlycine maxe1
- Treatment
- low-phosphorus stresse2
- Outcome
- synthesis of malic acide0
- Direction
- inhibitede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inhibited the synthesis of malic acid, thereby promoting the transport of phosphorus in the roots.”
e1“The regulatory effects of uneven phosphorus supplies on phosphorus transport in soybean roots are still unclear.”
e2“low-phosphorus stress inhibited the synthesis of fructose”
Claim · model-written summary
Low phosphorus stress inhibited fructose, mannose, and mannose-1-phosphate synthesis.
- Taxon
- soybeanGlycine maxe1
- Treatment
- low-phosphorus stresse0
- Outcome
- synthesis of fructose, mannose, and mannose-1-phosphatee0
- Direction
- inhibitede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low-phosphorus stress inhibited the synthesis of fructose, mannose, and mannose-1-phosphate”
e1“The regulatory effects of uneven phosphorus supplies on phosphorus transport in soybean roots are still unclear.”
Claim · model-written summary
Low phosphorus stress inhibited synthesis of phosphorus transport enzymes and invertase.
- Taxon
- soybeanGlycine maxe1
- Treatment
- low-phosphorus stresse2
- Outcome
- synthesis of other enzymes involved in phosphorus transport as well as invertasee0
- Direction
- inhibitede2
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the synthesis of other enzymes involved in phosphorus transport as well as invertase, thereby inhibiting the transport and synthesis of several organic phosphorus-containing compounds.”
e1“The regulatory effects of uneven phosphorus supplies on phosphorus transport in soybean roots are still unclear.”
e2“low-phosphorus stress inhibited the synthesis of fructose”
The same questions in other papers
phosphorus · nutrient: content · Glycine max (soybean)Positive and negative results
16 papers in the same direction as this paper · 107 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
- positive
120 papers more in this group
See all 124 papers →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.