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Elucidating the effect of TiO2 nanoparticles on mung bean rhizobia via in vitro assay: Influence on growth, morphology, and plant growth promoting traits.
Kaur, Harleen; Kalia, Anu; Manchanda, Pooja.
Afiliación
  • Kaur H; Department of Microbiology, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, India.
  • Kalia A; Electron Microscopy and Nanoscience Laboratory, Department of Soil Science, College of Agriculture, Punjab Agricultural University, Ludhiana, India.
  • Manchanda P; School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, India.
J Basic Microbiol ; 64(3): e2300306, 2024 Mar.
Article en En | MEDLINE | ID: mdl-38183339
ABSTRACT
Titanium dioxide nanoparticles (TiO2 NPs) are among the most commonly used nanomaterials and are most likely to end up in soil. Therefore, it is pertinent to study the interaction of TiO2 NPs with soil microorganisms. The present in vitro broth study evaluates the impacts of low-dose treatments (0, 1.0, 5.0, 10.0, 20.0, and 40.0 mg L-1 ) of TiO2 NPs on cell viability, morphology, and plant growth promoting (PGP) traits of rhizobia isolated from mung bean root nodule. Two types of TiO2 NPs, that is, mixture of anatase and rutile, and anatase alone were used in the study. These TiO2 NPs were supplemented in broth along with a multifunctional isolate (Bradyrhizobium sp.) and two reference cultures. The exposure of TiO2 (anatase+rutile) NPs at low concentrations (less than 20.0 mg L-1 ) enhanced the cell growth, and total soluble protein content, besides improving the phosphate solubilization, Indole-3-acetic acid (IAA) production, siderophore, and gibberellic acid production. The TiO2 (anatase) NPs enhanced exopolysaccharide (EPS) production by the test rhizobial cultures. The radical scavenging assay was performed to reveal the mode of action of the nano-TiO2 particles. The study revealed higher reactive oxygen species (ROS) generation by the TiO2 (anatase) NPs as compared with TiO2 (anatase+rutile) NPs. Exposure to TiO2 NPs also altered the morphology of rhizobial cells. The findings suggest that TiO2 NPs could act as promoters of PGP traits of PGP bacteria when applied at appropriate lower doses.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Rhizobium / Nanopartículas / Vigna Idioma: En Revista: J Basic Microbiol Asunto de la revista: MICROBIOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Rhizobium / Nanopartículas / Vigna Idioma: En Revista: J Basic Microbiol Asunto de la revista: MICROBIOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Alemania