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Muñoz-Torres P, Márquez SL, Sepúlveda-Chavera G, Cárdenas-Ninasivincha S, Arismendi-Macuer M, Huanca-Mamani W, Aguilar Y, Quezada A, Bugueño F. Isolation and Identification of Bacteria from Three Geothermal Sites of the Atacama Desert and Their Plant-Beneficial Characteristics. Microorganisms 2023; 11:2635. [PMID: 38004648 PMCID: PMC10672901 DOI: 10.3390/microorganisms11112635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
The Region of Arica and Parinacota (Atacama Desert) offers several unexplored remote sites with unique characteristics that would allow for the formulation of new bioproducts for agriculture. Among them, Jurasi Hot Springs, Polloquere Hot Springs, and Amuyo Lagoons represent a group of open pools fed by thermal water springing from the mountains. Their microbiomes remain unspecified, providing a unique opportunity to characterize the endemic community of these sites and develop new bioproducts for sustainable agriculture. Bacteria were isolated from the sediments of these geothermal sites and characterized by sequencing the 16S rRNA gene, microbiological characterization, and agricultural functional characterization. A total of 57 bacteria were isolated from three geothermal sites north of the Atacama Desert. The sequence analysis showed that the isolates belong to several bacterial genera, including Pantoea, Bacillus, and Pseudomonas, among others. The functional characterization revealed the presence of PGP traits, hydrolytic enzymes, and biocontrol activity against phytopathogenic fungi. These bacteria possess the potential to develop new biobased products for agriculture in arid conditions.
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Affiliation(s)
- Patricio Muñoz-Torres
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Av. General Velásquez 1775, Arica 1000000, Chile; (G.S.-C.); (S.C.-N.); (M.A.-M.); (W.H.-M.); (Y.A.); (A.Q.); (F.B.)
| | - Sebastián L. Márquez
- Fundación Científica y Cultural Biociencia, José Domingo Cañas, 2280 Ñuñoa, Santiago 7750132, Chile;
| | - Germán Sepúlveda-Chavera
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Av. General Velásquez 1775, Arica 1000000, Chile; (G.S.-C.); (S.C.-N.); (M.A.-M.); (W.H.-M.); (Y.A.); (A.Q.); (F.B.)
| | - Steffany Cárdenas-Ninasivincha
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Av. General Velásquez 1775, Arica 1000000, Chile; (G.S.-C.); (S.C.-N.); (M.A.-M.); (W.H.-M.); (Y.A.); (A.Q.); (F.B.)
| | - Mabel Arismendi-Macuer
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Av. General Velásquez 1775, Arica 1000000, Chile; (G.S.-C.); (S.C.-N.); (M.A.-M.); (W.H.-M.); (Y.A.); (A.Q.); (F.B.)
| | - Wilson Huanca-Mamani
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Av. General Velásquez 1775, Arica 1000000, Chile; (G.S.-C.); (S.C.-N.); (M.A.-M.); (W.H.-M.); (Y.A.); (A.Q.); (F.B.)
| | - Yola Aguilar
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Av. General Velásquez 1775, Arica 1000000, Chile; (G.S.-C.); (S.C.-N.); (M.A.-M.); (W.H.-M.); (Y.A.); (A.Q.); (F.B.)
| | - Antonio Quezada
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Av. General Velásquez 1775, Arica 1000000, Chile; (G.S.-C.); (S.C.-N.); (M.A.-M.); (W.H.-M.); (Y.A.); (A.Q.); (F.B.)
| | - Franco Bugueño
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Av. General Velásquez 1775, Arica 1000000, Chile; (G.S.-C.); (S.C.-N.); (M.A.-M.); (W.H.-M.); (Y.A.); (A.Q.); (F.B.)
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Moraga D, Latorre K, Muñoz-Torres P, Cárdenas S, Jofré-Quispe A, López-Cepeda J, Bustos L, Balada C, Argaluza MF, González P, Guzmán L. Diversity of Culturable Bacteria from Endemic Medicinal Plants of the Highlands of the Province of Parinacota, Chile. BIOLOGY 2023; 12:920. [PMID: 37508351 PMCID: PMC10376134 DOI: 10.3390/biology12070920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 07/30/2023]
Abstract
Endemic medicinal plants that grow at altitudes in northern Chile have been traditionally used for therapeutic applications by Aymara doctors. Several studies have analyzed the biological properties of these plants for therapeutic purposes. The aim was to characterize at molecular and biochemical levels the bacteria that live in the rhizosphere and roots from endemic medicinal plants that grow between 3681-5104 m.a.s.l. in the province of Parinacota. Thirty-nine bacteria were isolated from nine medicinal plants under our laboratory conditions. These bacteria were characterized by Gram stain, hydrolase production, plant-growth promotion, anti-fungal and antibacterial activities, and 16S rDNA sequencing. A phylogenetic study revealed the presence of three major phyla, Actinomycetota (46.2%), Bacillota (43.6%), and Pseudomonadota (10.3%). The rhizobacteria strains associated with the Aymara medicinal plant exhibited several interesting biological activities, such as hydrolytic enzymes, plant-growth-promoting traits, and antibacterial and antifungal properties, indicating their potential for developing new bio-based products for agricultural or clinical applications. These results are promising and highlight the need to point toward the search for explanations of the bio-molecular basis of the therapeutic effects of medicinal plants.
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Affiliation(s)
- Daniel Moraga
- Laboratorio de Fisiología, Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad de Tarapacá, Arica 1000000, Chile
| | - Katina Latorre
- Laboratorio de Microbiología, Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Tarapacá, Arica 1000000, Chile
| | - Patricio Muñoz-Torres
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Arica 1000000, Chile
| | - Steffany Cárdenas
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Arica 1000000, Chile
| | - Alan Jofré-Quispe
- Departamento de Ciencias Históricas y Geográficas, Universidad de Tarapacá, Arica 1000000, Chile
| | - José López-Cepeda
- Departamento de Biología, Facultad de Ciencias, Universidad de Tarapacá, Arica 1000000, Chile
| | - Luis Bustos
- Subdepartamento de Gestión de Farmacia, Servicio de Salud Arica, Arica 1000871, Chile
| | - Cristóbal Balada
- Laboratorio de Química Biológica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340001, Chile
| | - María Fernanda Argaluza
- Laboratorio de Química Biológica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340001, Chile
| | - Pablo González
- Laboratorio de Química Biológica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340001, Chile
| | - Leda Guzmán
- Laboratorio de Química Biológica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340001, Chile
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The Endophytic Pseudomonas sp. S57 for Plant-Growth Promotion and the Biocontrol of Phytopathogenic Fungi and Nematodes. PLANTS 2021; 10:plants10081531. [PMID: 34451576 PMCID: PMC8399624 DOI: 10.3390/plants10081531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/16/2021] [Accepted: 07/19/2021] [Indexed: 11/17/2022]
Abstract
Oregano from Socoroma (Atacama Desert) is characterized by its unique organoleptic properties and distinctive flavor and it is produced using ancestral pesticide-free agricultural practices performed by the Aymara communities. The cultivation in this zone is carried out under extreme conditions where the standard production of different crops is limited by several environmental factors, including aridity, high concentration of salts, and boron among others. However, oregano plants are associated with microorganisms that mitigate biotic and abiotic stresses present in this site. In this work, the S57 strain (member of the Pseudomonas genus that is closely related to Pseudomonas lini) was isolated from roots of oregano plants, which are grown in soils with high content of non-sodium salts and aluminum. This bacterium stimulates the growth of Micro-Tom tomato plants irrigated with saline-boric water. Moreover, it controls the growth of phytopathogenic fungi Fusarium oxysporum and Botrytis cinerea and the nematode Meloidogyne incognita under saline-boric conditions. Together with the high levels of bacterial biomass (~47 g/L), these results allow the establishment of the bases for developing a potential new agricultural bioproduct useful for arid and semiarid environments where commercial biological products show erratic behavior.
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