Abstract
In agroecosystems, a plant-usable form of nitrogen is mainly generated by legume-based biological nitrogen fixation, a process that requires phosphorus (P) as an essential nutrient. To investigate the physiological mechanism whereby phosphorus influences soybean nodule nitrogen fixation, soybean root nodules were exposed to four phosphate levels: 1 mg/L (P stress), 11 mg/L (P stress), 31 mg/L (Normal P), and 61 mg/L (High P) then proteome analysis of nodules was conducted to identify phosphorus-associated proteome changes. We found that phosphorus stress-induced ribosomal protein structural changes were associated with altered key root nodule protein synthesis profiles. Importantly, up-regulated expression of peroxidase was observed as an important phosphorus stress-induced nitrogen fixation-associated adaptation that supported two nodule-associated activities: scavenging of reactive oxygen species (ROS) and cell wall growth. In addition, phosphorus transporter (PT) and purple acid phosphatase (PAPs) were up-regulated that regulated phosphorus transport and utilization to maintain phosphorus balance and nitrogen fixation function in phosphorus-stressed root nodules.
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Claims 3
Claim · model-written summary
Phosphorus stress-induced ribosomal protein structural changes were associated with altered soybean nodule protein synthesis profiles.
- Taxon
- soybean
Glycine maxe1 - Treatment
- phosphorus stresse2
- Outcome
- protein synthesis profilese2
- Direction
- alterede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“soybean root nodules were exposed to four phosphate levels: 1 mg/L (P stress), 11 mg/L (P stress), 31 mg/L (Normal P), and 61 mg/L (High P)”
e2“phosphorus stress-induced ribosomal protein structural changes were associated with altered key root nodule protein synthesis profiles”
Claim · model-written summary
Phosphorus stress up-regulated peroxidase expression in soybean nodules as a nitrogen fixation-associated adaptation.
- Taxon
- soybeanGlycine maxe1
- Treatment
- phosphorus stresse3
- Gene
- peroxidasee3
- Outcome
- expression of peroxidasee3
- Direction
- up-regulatede3
- Comparator
- Normal Pe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“soybean root nodules were exposed to four phosphate levels: 1 mg/L (P stress), 11 mg/L (P stress), 31 mg/L (Normal P), and 61 mg/L (High P)”
e3“up-regulated expression of peroxidase was observed as an important phosphorus stress-induced nitrogen fixation-associated adaptation”
Claim · model-written summary
Under phosphorus stress, phosphorus transporter and purple acid phosphatase were up-regulated in soybean nodules.
- Taxon
- soybeanGlycine maxe1
- Treatment
- phosphorus-stressede5
- Gene
- purple acid phosphatase (PAPs)e4
- Outcome
- phosphorus transporter (PT) and purple acid phosphatase (PAPs)e4
- Direction
- up-regulatede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“soybean root nodules were exposed to four phosphate levels: 1 mg/L (P stress), 11 mg/L (P stress), 31 mg/L (Normal P), and 61 mg/L (High P)”
e4“phosphorus transporter (PT) and purple acid phosphatase (PAPs) were up-regulated”
e5“in phosphorus-stressed root nodules”
The same questions in other papers
phosphorus · molecular: expression · Glycine max (soybean)Positive and negative results
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