Experimental approaches to improve yerba mate tissue culture using nanoparticles.

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dc.contributorBRUNA ZANATTA PEREIRA, UNIVERSIDADE FEDERAL DO PARANA; REGINA CAETANO QUISEN, CNPF; JULIANA DEGENHARDT GOLDBACH, CNPF; IVAR WENDLING, CNPF.
dc.creatorPEREIRA, B. Z.
dc.creatorQUISEN, R. C.
dc.creatorDEGENHARDT, J.
dc.creatorWENDLING, I.
dc.date2025-10-15T10:49:32Z
dc.date2025-10-15T10:49:32Z
dc.date2025-10-09
dc.date2025
dc.date.accessioned2026-07-07T03:34:52Z
dc.descriptionIlex paraguariensis (yerba mate), a culturally and economically important South American species, faces significant challenges in vitro, including contamination, phenolic oxidation, and low regeneration rates. Nanoparticles have recently emerged as promising tools to overcome such limitations. This study evaluated silver (AgNPs) and chitosan nanoparticles (ChNPs) in eight experiments using nodal, leaf, and internodal explants. Surface disinfection with 1% colloidal silver solution 20 ppm significantly reduced contamination (17.2% and 15%) while maintaining viability (62.1%). However, supplementation of culture media with AgNPs (4–75 mg·L−1) or ChNPs (5–120 mg·L−1) did not improve nodal segment responses. In leaf explants, 4 mg·L−1 AgNPs proved most effective, reducing contamination and markedly decreasing callus oxidation from 63.3% to 10.0%. Callogenesis was enhanced when AgNPs were combined with growth regulators, with the highest induction at 6 mg·L−1 AgNPs + zeatin (38.1%) and 4 mg·L−1 AgNPs + BAP (42.9%). Conversely, in internodal segments, AgNPs combined with BAP completely inhibiting callus formation. The resulting calli exhibited compact and friable morphologies but no signs of somatic embryogenesis. Overall, the effectiveness of AgNPs depends on their formulation, explant type, and interaction with cytokinins. Optimization of nanoparticle formulation and hormonal balance remains essential to maximize efficacy while minimizing toxicity.
dc.identifierForests, v. 16, n. 9, 1429, 2025.
dc.identifier1999-4907
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1179560
dc.identifierhttps://doi.org/10.3390/f16091429
dc.identifier.urihttp://hdl.handle.net/123456789/437863
dc.languageeng
dc.rightsopenAccess
dc.subjectSilver nanoparticle
dc.subjectChitosan nanoparticle
dc.subjectNanopartícula de prata
dc.subjectNanopartícula de quitosana
dc.subjectErva mate
dc.subjectIlex Paraguariensis
dc.subjectCultura de Tecido
dc.subjectTissue culture
dc.subjectYerba mate
dc.titleExperimental approaches to improve yerba mate tissue culture using nanoparticles.
dc.typeArtigo de periódico

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