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Plant growth and microbiota structural effects of rhizobacteria inoculation on mahogany (Swietenia macrophylla King [Meliaceae]) under nursery conditions

Trujillo Elisea, Flor Itzel [autora] | Labrín Sotomayor, Natalia Ysabel [autora] | Becerra Lucio, Patricia Alejandra [autora] | Becerra Lucio, Ángel Antonio [autor] | Martínez Heredia, Jorge E [autor] | Chávez Bárcenas, Ana T [autora] | Peña Ramírez, Yuri Jorge Jesús [autor].
Tipo de material: Artículo en línea Artículo en línea Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Swietenia macrophylla | Árboles maderables | RizobacteriasTema(s) en inglés: Swietenia macrophylla | Timber | RhizobacteriaNota de acceso: Acceso en línea sin restricciones En: Forests. Volumen 13, número 10, artículo número 1742 (October 2022), páginas 1-11. --ISSN: 1999-4907Número de sistema: 63085Resumen:
Inglés

Swietenia macrophylla is a tropical timber species of ecological and economic importance. However, its slow vegetative growth and root development in nurseries strongly limit its production. This study evaluated the effect of 10 rhizobacteria strains during the early stages of production of S. macrophylla. Superficially disinfected seeds were inoculated with rhizobacteria under commercial nursery conditions. Inoculation was complemented by initial fertilization without growth regulators, fungicides, or bactericides. The results indicate that the rhizobacteria strains induce different responses in plants. Significant differences in plant biomass and root architecture were found. Treatments inoculated with Bacillus sp., Bacillus polyfermenticus, and Bacillus siamensis strains; showed an increase of up to 41% (dry weight). Plants increased root biomass by 30% when inoculated with S. siamensis. All inoculated strains were identified as members of the genus Bacillus spp., and their presence three months after inoculation was assessed by 16S rRNA gene-based amplicon massive sequencing. We found that Bacillus sp. genus was only present in inoculated treatments, suggesting that inoculated bacteria could establish themselves successfully as part of the microbiota. These results support the advantages of using PGPRs in commercial tropical tree production.

Recurso en línea: https://doi.org/10.3390/f13101742
Lista(s) en las que aparece este ítem: AHMRET-Campeche
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Acceso en línea sin restricciones

Swietenia macrophylla is a tropical timber species of ecological and economic importance. However, its slow vegetative growth and root development in nurseries strongly limit its production. This study evaluated the effect of 10 rhizobacteria strains during the early stages of production of S. macrophylla. Superficially disinfected seeds were inoculated with rhizobacteria under commercial nursery conditions. Inoculation was complemented by initial fertilization without growth regulators, fungicides, or bactericides. The results indicate that the rhizobacteria strains induce different responses in plants. Significant differences in plant biomass and root architecture were found. Treatments inoculated with Bacillus sp., Bacillus polyfermenticus, and Bacillus siamensis strains; showed an increase of up to 41% (dry weight). Plants increased root biomass by 30% when inoculated with S. siamensis. All inoculated strains were identified as members of the genus Bacillus spp., and their presence three months after inoculation was assessed by 16S rRNA gene-based amplicon massive sequencing. We found that Bacillus sp. genus was only present in inoculated treatments, suggesting that inoculated bacteria could establish themselves successfully as part of the microbiota. These results support the advantages of using PGPRs in commercial tropical tree production. eng

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