Influence of soil phosphate on rhizobacterial performance in affecting wheat yield

dc.contributor.authorBreedt, Gerhardus
dc.contributor.authorKorsten, Lise
dc.contributor.authorGokul, Jarishma Keriuscia
dc.contributor.emailjarishma.gokul@up.ac.zaen_US
dc.date.accessioned2024-05-24T05:29:18Z
dc.date.available2024-05-24T05:29:18Z
dc.date.issued2024-05
dc.description.abstractAs a primary nutrient in agricultural soils, phosphorus plays a crucial but growth-limiting role for plants due to its complex interactions with various soil elements. This often results in excessive phosphorus fertilizer application, posing concerns for the environment. Agri-research has therefore shifted focus to increase fertilizer-use efficiency and minimize environmental impact by leveraging plant growth-promoting rhizobacteria. This study aimed to evaluate the in-field incremental effect of inorganic phosphate concentration (up to 50 kg/ha/P) on the ability of two rhizobacterial isolates, Lysinibacillus sphaericus (T19), Paenibacillus alvei (T29), from the previous Breedt et al. (Ann Appl Biol 171:229–236, 2017) study on maize in enhancing the yield of commercially grown Duzi® cultivar wheat. Results obtained from three seasons of field trials revealed a significant relationship between soil phosphate concentration and the isolates’ effectiveness in improving wheat yield. Rhizospheric samples collected at flowering during the third season, specifically to assess phosphatase enzyme activity at the different soil phosphate levels, demonstrated a significant decrease in soil phosphatase activity when the phosphorus rate reached 75% for both isolates. Furthermore, in vitro assessments of inorganic phosphate solubilization by both isolates at five increments of tricalcium phosphate-amended Pikovskaya media found that only isolate T19 was capable of solubilizing tricalcium at concentrations exceeding 3 mg/ml. The current study demonstrates the substantial influence of inorganic phosphate on the performance of individual rhizobacterial isolates, highlighting that this is an essential consideration when optimizing these isolates to increase wheat yield in commercial cultivation.en_US
dc.description.departmentBiochemistryen_US
dc.description.departmentGeneticsen_US
dc.description.departmentMicrobiology and Plant Pathologyen_US
dc.description.departmentPlant Production and Soil Scienceen_US
dc.description.librarianhj2024en_US
dc.description.sdgSDG-02:Zero Hungeren_US
dc.description.sponsorshipOpen access funding provided by University of Pretoria.en_US
dc.description.urihttp://link.springer.com/journal/284en_US
dc.identifier.citationBreedt, G., Korsten, L. & Gokul, J.K. Influence of Soil Phosphate on Rhizobacterial Performance in Affecting Wheat Yield. Current Microbiology 81, 170 (2024). https://doi.org/10.1007/s00284-024-03685-x.en_US
dc.identifier.issn0343-8651 (print)
dc.identifier.issn1432-0991 (online)
dc.identifier.other10.1007/s00284-024-03685-x
dc.identifier.urihttp://hdl.handle.net/2263/96212
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.rights© The Author(s) 2024. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License.en_US
dc.subjectSoil phosphateen_US
dc.subjectFertilizer-use efficiencyen_US
dc.subjectLysinibacillus sphaericusen_US
dc.subjectPaenibacillus alveien_US
dc.subjectRhizobacteriaen_US
dc.subjectWheaten_US
dc.subjectSDG-02: Zero hungeren_US
dc.titleInfluence of soil phosphate on rhizobacterial performance in affecting wheat yielden_US
dc.typeArticleen_US

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