Abstract
Phosphate-solubilizing bacteria (PSB) enhance plant phosphorus utilization through their ability to dissolve phosphorus. To address the low utilization of nitrogen, phosphorus, potassium, zinc, and selenium by tea plants in acidic, selenium-rich soils, the study aimed to investigate the impact of exogenous PSB on soil nutrients and the absorption of zinc and selenium by tea plants. Following the inoculation of potted Longjing and Huangjinya varieties with exogenous phosphorus-solubilizing bacteria, we determined the concentrations of AN, AP, AK, Zn, and Se in their rhizosphere soil, in addition to the Zn and Se contents in their aboveground and belowground parts. The results show that after respective treatment with the three PSB, the concentration of available P in the tea plant rhizosphere soil significantly increased, with PMS08 having the most pronounced effect.After the same treatment, In the rhizosphere soil of Longjing tea plants, the AN content increased by 26.47%, 18.41%, and 7.51%, respectively, relative to the control, while the AK content decreased in the rhizosphere soil of Huangjinya tea plants. Inoculation with the three PSB resulted in a greater content of available Se in both the aboveground and belowground parts of the two tea plants. After inoculation with PMS20, the available Zn content of the belowground parts of Longjing and Huangjinya tea plants respectively decreased by 13.42% and 15.69% in comparison with the control. Additionally, after inoculating Longjing tea plants with PSt09 and Huangjinya tea plants with PMS08, the content of available Zn in their belowground parts significantly decreased by 9.22% and 35.74%, respectively. Evidently, the inoculation with the three phosphorus-solubilizing bacteria is beneficial for the uptake of available P by tea plants, promoting the utilization and accumulation of available Se. However, the content of AN or AK in rhizosphere soil varies between different tea plant varieties inoculated with the same kind of phosphorus-solubilizing bacteria. Moreover, the content of available Zn in tea plants also differs, highlighting the need to further investigate the differential effects of phosphorus-solubilizing bacteria on different plant varieties.
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Claims 12
Claim · model-written summary
Three PSB significantly increased rhizosphere available phosphorus, most with PMS08.
- Taxon
- tea plantst0
- Treatment
- three PSBe0
- Outcome
- available P in the tea plant rhizosphere soile0
- Direction
- increasede0
- Qualifier
- PMS08e0
Not reportedComparator
Verbatim
e0“after respective treatment with the three PSB, the concentration of available P in the tea plant rhizosphere soil significantly increased, with PMS08 having the most pronounced effect”
t0“tea plants”
Claim · model-written summary
PSB treatment increased Longjing rhizosphere AN by 26.47%.
Verbatim
e0“In the rhizosphere soil of Longjing tea plants, the AN content increased by 26.47%, 18.41%, and 7.51%, respectively, relative to the control”
t0“three exogenous phosphorus-solubilizing bacteria”
Claim · model-written summary
PSB treatment increased Longjing rhizosphere AN by 18.41%.
Verbatim
e0“In the rhizosphere soil of Longjing tea plants, the AN content increased by 26.47%, 18.41%, and 7.51%, respectively, relative to the control”
t0“three exogenous phosphorus-solubilizing bacteria”
Claim · model-written summary
PSB treatment increased Longjing rhizosphere AN by 7.51%.
Verbatim
e0“In the rhizosphere soil of Longjing tea plants, the AN content increased by 26.47%, 18.41%, and 7.51%, respectively, relative to the control”
t0“three exogenous phosphorus-solubilizing bacteria”
Claim · model-written summary
PSB treatment decreased Huangjinya rhizosphere AK.
- Taxon
- tea plantse0
- Material
- Huangjinyae0
- Treatment
- three exogenous phosphorus-solubilizing bacteriat0
- Outcome
- AK contente0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“the AK content decreased in the rhizosphere soil of Huangjinya tea plants”
t0“three exogenous phosphorus-solubilizing bacteria”
Claim · model-written summary
Three PSB increased available selenium in aboveground and belowground parts of both tea varieties.
- Taxon
- tea plantse0
- Organ / stage
- aboveground and belowground partse0
- Treatment
- Inoculation with the three PSBe0
- Outcome
- available See0
- Direction
- greatere0
Not reportedComparator
Verbatim
e0“Inoculation with the three PSB resulted in a greater content of available Se in both the aboveground and belowground parts of the two tea plants”
Claim · model-written summary
PMS20 inoculation decreased belowground available zinc in Longjing by 13.42%.
Verbatim
e0“After inoculation with PMS20, the available Zn content of the belowground parts of Longjing and Huangjinya tea plants respectively decreased by 13.42% and 15.69% in comparison with the control”
Claim · model-written summary
PMS20 inoculation decreased belowground available zinc in Huangjinya by 15.69%.
Verbatim
e0“After inoculation with PMS20, the available Zn content of the belowground parts of Longjing and Huangjinya tea plants respectively decreased by 13.42% and 15.69% in comparison with the control”
Claim · model-written summary
PSt09 inoculation significantly decreased belowground available zinc in Longjing by 9.22%.
- Taxon
- tea plantse0
- Material
- Longjinge0
- Organ / stage
- belowground partse0
- Treatment
- PSt09e0
- Outcome
- available Zne0
- Direction
- decreasede0
- Value
- 9.22%e0
Not reportedComparator
Verbatim
e0“after inoculating Longjing tea plants with PSt09 and Huangjinya tea plants with PMS08, the content of available Zn in their belowground parts significantly decreased by 9.22% and 35.74%, respectively”
Claim · model-written summary
PMS08 inoculation significantly decreased belowground available zinc in Huangjinya by 35.74%.
- Taxon
- tea plantse0
- Material
- Huangjinyae0
- Organ / stage
- belowground partse0
- Treatment
- PMS08e0
- Outcome
- available Zne0
- Direction
- decreasede0
- Value
- 35.74%e0
Not reportedComparator
Verbatim
e0“after inoculating Longjing tea plants with PSt09 and Huangjinya tea plants with PMS08, the content of available Zn in their belowground parts significantly decreased by 9.22% and 35.74%, respectively”
Claim · model-written summary
The same PSB produced variety dependent rhizosphere AN or AK contents.
Verbatim
e0“the content of AN or AK in rhizosphere soil varies between different tea plant varieties inoculated with the same kind of phosphorus-solubilizing bacteria”
Claim · model-written summary
Available zinc content differed among inoculated tea plants.
Verbatim
e0“the content of available Zn in tea plants also differs”
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