Metal(loid)-resistant bacterial consortia with antimycotic properties increase tolerance of Chenopodium quinoa Wild. to metal(loid) stress

Primer Autor
Arriagada, Cesar
Co-autores
Alvarado, Roxana
Fuentes, Alejandra
Ortiz, Javier
Herrera, Hector
Título
Metal(loid)-resistant bacterial consortia with antimycotic properties increase tolerance of Chenopodium quinoa Wild. to metal(loid) stress
Editorial
ELSEVIER
Revista
RHIZOSPHERE
Lenguaje
en
Resumen
Bacteria associated with plants colonizing extreme environments in Chile (Atacama and Antarctic Desert soils) provide a model to study plant growth-promoting mechanisms that can be useful to improve the growth of crops such as Chenopodium quinoa Wild. (Amaranthaceae) growing under severe environmental conditions. This study aimed to determine the tolerance of extremophile rhizobacteria to multiple metal(loid)s and evaluate the effects of formulated consortia in seed germination and growth-promotion of C. quinoa. In our work, five rhizobacteria were isolated and classified into the bacteria genera Streptomyces, Bacillus, and Pseudomonas. The five bacteria showed optimum growth at 26 degrees C, pH 6, and 1% NaCl. In addition, the isolated were resistant to arsenic, manganese, zinc, copper, chromium and showed plant growth-promoting traits, including indole acetic acid production, siderophores production, phosphate solubilization, ACC deaminase activity, and ammonia production. According to compatibility tests, three bacterial consortia were formulated: i) consortium A (Pseudomonas sp. and Bacillus sp. (T1B41)), ii) consortium B (Pseudomonas sp. and Bacillus sp. (B2B24)), and iii) consortium C (Streptomyces sp., Bacillus sp. (B2B24) and Bacillus sp. (T3B45)). In vitro antagonism against phytopathogenic fungi showed that Bacillus sp. (B2B24) and Bacillus sp. (T3B45) have a significant level of antagonism (up to 18.7 and 6.8%, respectively) and consortia were the most effective against B. cinerea (up to 100%). Consortia B and C significantly improved the germination rate (%) of C. quinoa seeds (86 +/- 3.3 and 77 +/- 1.7, respectively) and the number of leaves, wet stem weight, length stem length, wet root weight, and root diameter in the presence of metal(loid)s. Our results showed that rhizobacterial consortia based on extremophile microorganisms can enhance the growth of C. quinoa seedlings under metal(loid) stress, demonstrating beneficial characteristics that may be key in the early stages of development.
Tipo de Recurso
artículo original
Description
This study was supported by the Fondo Nacional de Desarrollo Cientifico y Tecnologico of Chile grant number 1211857 and Doctoral Fellowship 21190207.
doi
10.1016/j.rhisph.2022.100569
Formato Recurso
PDF
Palabras Claves
Biocontrol
Bioremediation
Extremophiles
Plant growth-promoting bacteria
Rhizosphere
GROWTH PROMOTING BACTERIA
ENVIRONMENT
FUNGI
SOIL
Ubicación del archivo
http://dx.doi.org/10.1016/j.rhisph.2022.100569
Categoría OCDE
Agronomía
Ciencias Vegetales
Ciencia del suelo
Materias
Biocontrol
Biorremediación
Extremófilos
Bacterias promotoras del crecimiento de las plantas
Rizosfera
BACTERIAS PROMOTORAS DEL CRECIMIENTO
MEDIO AMBIENTE
HONGOS
SUELO
Disciplinas de la OCDE
Biotecnología agrícola
Agricultura
Microbiología
Título de la cita (Recomendado-único)
Metal(loid)-resistant bacterial consortia with antimycotic properties increase tolerance of Chenopodium quinoa Wild. to metal(loid) stress
Identificador del recurso (Mandatado-único)
artículo original
Versión del recurso (Recomendado-único)
version publicada
Condición de la licencia (Recomendado-repetible)
0
Derechos de acceso
restringido
Access Rights
restringido
Referencia del Financiador (Mandatado si es aplicable-repetible)
ANID-FONDECYT 1211857
ANID-FONDECYT 21190207
ANID FONDECYT 1211857
ANID FONDECYT 21190207
Id de Web of Science
WOS:000825080600001
Colecciones
Colección Publicaciones Científicas
Colección ANID
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