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August 27, 2026Chilean journal of agricultural researchOpen Access

Unveiling Pseudochrobactrum asaccharolyticum and associated rhizobacteria with Lepidium meyenii W.: PGPR potential and interaction with high Andean soil properties

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Authors

LHLucero HuasasquicheJCJohan CancanLSLilian L. Sanchez

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Overview

Microbiological analysis reveals extreme-altitude rhizobacteria with high viability in degraded maca soils, suggesting potential for native biofertilizers and bioremediation.

Key Points

  • To evaluate the diversity, viability, and plant growth-promoting potential of native rhizosphere bacteria associated with maca (Lepidium meyenii) cultivation in degraded High Andean soils.
  • Sampled rhizosphere soil from maca crops at extreme altitudes (> 4000 m a.s.l.) and isolated 133 bacterial strains using selective culture methodologies.
  • Identified six elite bacterial isolates via 16S rRNA gene sequencing and evaluated their survival under extreme environmental conditions.
  • Identified elite strains belonging to the genera Peribacillus, Pseudomonas, Pantoea, and Pseudochrobactrum asaccharolyticum.
  • Observed high bacterial viability exceeding 10^10 CFU mL^-1 among adapted strains, despite an overall low microbial density caused by intensive monoculture degradation.

Cite This Study

Huasasquiche et al. (2026) studied this question.

synapsesocial.com/papers/6a8fe99e10c91c1e92621611https://doi.org/10.4067/s0718-58392026000500779
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