Abstract
Phosphate-solubilizing bacteria (PSB) have the ability to solubilize insoluble phosphorus (P) and release soluble P. Extensive research has been performed with respect to PSB isolation from the rhizospheres of various plants, but little is known about the prevalence of PSB in the grapevine rhizosphere. In this study, we aimed to isolate and identify PSB from the grapevine rhizosphere in five vineyards of Northwest China, to characterize their plant-growth-promoting (PGP) traits, evaluate the effect of stress on their phosphate-solubilizing activity (PSA), and test their ability to stimulate the growth of Vitis vinifera L. cv. Cabernet Sauvignon. From the vineyard soils, 66 PSB isolates were screened, and 10 strains with high PSA were identified by 16S rRNA sequencing. Sequence analysis revealed that these 10 strains belonged to 4 genera and 5 species: Bacillus aryabhattai, B. megaterium, Klebsiella variicola, Stenotrophomonas rhizophila, and Enterobacter aerogenes. The selected PSB strains JY17 (B. aryabhattai) and JY22 (B. aryabhattai) were positive for multiple PGP traits, including nitrogen fixation and production of indole acetic acid (IAA), siderophores, 1-aminocyclopropane-1-carboxylate (ACC) deaminase, chitinase, and protease. JY17 and JY22 showed strong PSA under stress conditions of high pH, high salt, and high temperature. Therefore, these two isolates can be used as biofertilizers in saline-alkaline soils. The inoculation with PSB significantly facilitated the growth of V. vinifera cv. Cabernet Sauvignon under greenhouse conditions. Use of these PSB as biofertilizers will increase the available P content in soils, minimize P-fertilizer application, reduce environmental pollution, and promote sustainable agriculture.
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Claims 6
Claim · model-written summary
10 strains with high phosphate-solubilizing activity were identified among 66 isolates from grapevine rhizosphere soils in five vineyards.
- Interactor
- PSBe1symbiont
- Outcome
- strains with high PSAe1
- Value
- 10 strainse1
- Setting
- five vineyards of Northwest Chinae0
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“phosphate-solubilizing bacteria from grapevine rhizospheres”
e0“isolate and identify PSB from the grapevine rhizosphere in five vineyards of Northwest China”
e1“From the vineyard soils, 66 PSB isolates were screened, and 10 strains with high PSA were identified by 16S rRNA sequencing”
Claim · model-written summary
Strains JY17 and JY22 (B. aryabhattai) were positive for multiple plant-growth-promoting traits.
- Material
- JY17 (B. aryabhattai)e2
- Interactor
- B. aryabhattaiPriestia aryabhattaie2symbiont
- Outcome
- multiple PGP traitse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“phosphate-solubilizing bacteria from grapevine rhizospheres”
e2“The selected PSB strains JY17 (B. aryabhattai) and JY22 (B. aryabhattai) were positive for multiple PGP traits, including nitrogen fixation and production of indole acetic acid (IAA), siderophores, 1-aminocyclopropane-1-carboxylate (ACC) deaminase, chitinase, and protease”
Claim · model-written summary
Strains JY17 and JY22 showed strong phosphate-solubilizing activity under stress of high pH, high salt and high temperature.
- Material
- JY17 and JY22e3
- Treatment
- stress conditions of high pH, high salt, and high temperaturee3
- Outcome
- strong PSAe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“phosphate-solubilizing bacteria from grapevine rhizospheres”
e3“JY17 and JY22 showed strong PSA under stress conditions of high pH, high salt, and high temperature”
Claim · model-written summary
Inoculation with PSB significantly facilitated the growth of Vitis vinifera cv. Cabernet Sauvignon under greenhouse conditions.
- Taxon
- V. vinifera cv. Cabernet Sauvignon
Vitis viniferae4 - Treatment
- inoculation with PSBe4
- Interactor
- PSBe4symbiont
- Outcome
- growthe4
- Direction
- facilitatede4
- Setting
- greenhouse conditionse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“phosphate-solubilizing bacteria from grapevine rhizospheres”
e4“The inoculation with PSB significantly facilitated the growth of V. vinifera cv. Cabernet Sauvignon under greenhouse conditions”
Claim · model-written summary
Use of these PSB as biofertilizers is expected to increase the available phosphorus content in soils.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“phosphate-solubilizing bacteria from grapevine rhizospheres”
e5“Use of these PSB as biofertilizers will increase the available P content in soils”
Claim · model-written summary
The two isolates can be used as biofertilizers in saline-alkaline soils.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“phosphate-solubilizing bacteria from grapevine rhizospheres”
e6“these two isolates can be used as biofertilizers in saline-alkaline soils”
The same questions in other papers
inoculation · growth · Vitis vinifera (wine grape)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
5 papers more in this group
See all 9 papers →phosphorus · growth · Vitis vinifera (wine grape)Results agree
1 paper in the same direction as this paper
- 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.