Abstract
Selenium (Se) has been widely reported to affect plant growth, nutrient cycling, and the rhizobiome. However, how Se shapes the rhizobiome and interacts with plants remains largely elusive. Pot and hydroponic experiments were employed to elucidate the regulatory mechanism of Se in the citrus rhizobiome. Compared to the control, soil Se application significantly increased the root biomass (34.7%) and markedly reduced rhizosphere HCl-P, H 2 O-P, NaHCO 3 -IP, and residual-P of citrus, which were related to the variation of citrus rhizobiome. Se primarily enriched Proteobacteria and Actinobacteria as well as the phosphorus (P) functional genes phod and pqqc . Further study revealed that Se altered the metabolite profile of root exudate, particularly enhancing the abundance of l -cyclopentylglycine, cycloleucine, l -proline, l -pipecolic acid, and inositol, which played a key role in reshaping the citrus rhizobiome. These metabolites could serve as both nutrient sources and signaling molecules, thus supporting the growth or chemotaxis of the functional microbes. These bacterial taxa have the potential to solubilize P or stimulate plant growth. These findings provide a novel mechanistic understanding of the intriguing interactions between Se, root exudate, and rhizosphere microbiomes, and demonstrate the potential for utilizing Se to regulate rhizobiome function and enhance soil P utilization in citrus cultivation.
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Claims 11
Claim · model-written summary
Soil Se application increased citrus root biomass by 34.7% compared with the control.
- Treatment
- soil Se applicatione1
- Outcome
- root biomasse1
- Direction
- increasede1
- Value
- 34.7%e1
- Comparator
- controle1
CitrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e1“Compared to the control, soil Se application significantly increased the root biomass (34.7%) and markedly reduced rhizosphere HCl-P, H 2 O-P, NaHCO 3 -IP, and residual-P of citrus”
Claim · model-written summary
Soil Se application markedly reduced rhizosphere HCl-P, H 2 O-P and NaHCO 3 -IP compared with the control.
- Treatment
- soil Se applicatione1
- Outcome
- HCl-P, H 2 O-P, NaHCO 3 -IPe1
- Direction
- reducede1
- Qualifier
- markedlye1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e1“Compared to the control, soil Se application significantly increased the root biomass (34.7%) and markedly reduced rhizosphere HCl-P, H 2 O-P, NaHCO 3 -IP, and residual-P of citrus”
Claim · model-written summary
Soil Se application markedly reduced rhizosphere residual-P compared with the control.
- Treatment
- soil Se applicatione1
- Outcome
- residual-Pe1
- Direction
- reducede1
- Qualifier
- markedlye1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e1“Compared to the control, soil Se application significantly increased the root biomass (34.7%) and markedly reduced rhizosphere HCl-P, H 2 O-P, NaHCO 3 -IP, and residual-P of citrus”
Claim · model-written summary
Se was associated with enrichment of Proteobacteria and Actinobacteria.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e2“Se primarily enriched Proteobacteria and Actinobacteria as well as the phosphorus (P) functional genes phod and pqqc”
Claim · model-written summary
Se was associated with enrichment of the phosphorus functional genes phod and pqqc.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e2“Se primarily enriched Proteobacteria and Actinobacteria as well as the phosphorus (P) functional genes phod and pqqc”
Claim · model-written summary
Se altered the metabolite profile of citrus root exudate.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e3“Further study revealed that Se altered the metabolite profile of root exudate, particularly enhancing the abundance of l -cyclopentylglycine, cycloleucine, l -proline, l -pipecolic acid, and inositol, which played a key role in reshaping the citrus rhizobiome”
Claim · model-written summary
Se enhanced the abundance of l -cyclopentylglycine, cycloleucine and l -proline in root exudate.
- Treatment
- See3
- Outcome
- abundance of l -cyclopentylglycine, cycloleucine, l -prolinee3
- Direction
- enhancinge3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e3“Further study revealed that Se altered the metabolite profile of root exudate, particularly enhancing the abundance of l -cyclopentylglycine, cycloleucine, l -proline, l -pipecolic acid, and inositol, which played a key role in reshaping the citrus rhizobiome”
Claim · model-written summary
Se enhanced the abundance of l -pipecolic acid and inositol in root exudate.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e3“Further study revealed that Se altered the metabolite profile of root exudate, particularly enhancing the abundance of l -cyclopentylglycine, cycloleucine, l -proline, l -pipecolic acid, and inositol, which played a key role in reshaping the citrus rhizobiome”
Claim · model-written summary
The root exudate metabolites may serve as nutrient sources and signaling molecules that support the growth or chemotaxis of functional microbes.
- Interactor
- functional microbese4symbiont
- Outcome
- growth or chemotaxis of the functional microbese4
- Qualifier
- nutrient sources and signaling moleculese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e4“These metabolites could serve as both nutrient sources and signaling molecules, thus supporting the growth or chemotaxis of the functional microbes”
Claim · model-written summary
Bacterial taxes may have the potential to solubilize P or stimulate citrus growth.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e5“These bacterial taxa have the potential to solubilize P or stimulate plant growth”
Claim · model-written summary
Se use may be utilized to enhance soil P utilization in citrus cultivation.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Selenium-Mediated Shaping of Citrus Rhizobiome”
e6“demonstrate the potential for utilizing Se to regulate rhizobiome function and enhance soil P utilization in citrus cultivation”
The same questions in other papers
selenium atom · growth · CitrusResults agree
2 papers in the same direction as this paper
- positive
- positive
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.