Screening for indole-3-acetic acid synthesis and 1-aminocyclopropane-carboxylate deaminase activity in soil yeasts from Chile uncovers Solicoccozyma aeria as an effective plant growth promoter

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dc.catalogadorgjm
dc.contributor.authorCarvajal Contardo, Mariajosé
dc.contributor.authorGodoy, Liliana
dc.contributor.authorGebauer H., Marlene
dc.contributor.authorCatrileo Aros, Daniela
dc.contributor.authorAlbornoz G., Francisco
dc.date.accessioned2024-05-06T17:36:16Z
dc.date.available2024-05-06T17:36:16Z
dc.date.issued2023
dc.description.abstractBackground and aims: Plant growth-promoting microorganisms (PGPMs) stimulate plant growth by a series of mechanisms, including atmospheric nitrogen fixation, phosphorus solubilization and the synthesis of plant hormones. Within the group of PGPMs, several species of bacteria and fungi have been extensively studied. However, little information is available with regard to soil yeasts. The present study was conducted to identify yeast strains isolated from different soils in Chile that present plant growth promotion activity. Methods: Twenty-three strains were evaluated either for their capacity to synthesize indole-3-acetic acid or show aminocyclopropane-1-carboxylate deaminase activity. The effect on tomato seedling growth was evaluated in vitro, and two strains were selected for in vivo evaluation of plant growth and root ethylene synthesis. Results: All the strains analyzed presented IAA synthesis within the range between 0.8 and 3.3 ?g IAA mL?1. Solicoccozyma aeria (YCPUC75 and YCPUC79 strains) was the only yeast with ACC deaminase activity. In vitro inoculation of tomato seeds with eight of the evaluated strains resulted in an increase in the root volume and the number of lateral roots. In the second experiment, a 40% reduction in root ethylene synthesis was achieved by adding S. aeria (YCPUC79) to the root zone, which resulted in a 26% increase in plant growth. Conclusions: Solicoccozyma aeria YCPUC79 is an effective plant growth promoter stimulating root growth and reducing root ethylene synthesis.
dc.description.funderFONDECYT
dc.description.funderAgencia Nacional de Investigación y Desarrollo
dc.fechaingreso.objetodigital2024-05-06
dc.fuente.origenORCID
dc.identifier.doi10.1007/s11104-023-05906-x
dc.identifier.eissn1573-5036
dc.identifier.issn0032-079X
dc.identifier.scopusidSCOPUS_ID:85147128994
dc.identifier.urihttps://doi.org/10.1007/s11104-023-05906-x
dc.identifier.urihttps://link.springer.com/article/10.1007/s11104-023-05906-x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/85467
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Carvajal Contardo, Mariajosé; S/I; 1047060
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Godoy, Liliana; 0000-0001-5110-5978; 1070717
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Gebauer H., Marlene; S/I; 100191
dc.information.autorucFacultad de Agronomía e Ingeniería Forestal; Catrileo Aros, Daniela; S/I; 1199772
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Albornoz G., Francisco; 0000-0003-4434-7631; 1020221
dc.language.isoen
dc.language.isoen
dc.nota.accesocontenido completo
dc.pagina.final93
dc.pagina.inicio83
dc.revistaPlant and Soil
dc.rightsacceso abierto
dc.rights.licenseCC BY 4.0 DEED Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectEthylene
dc.subjectPlant growth-promoting microorganisms
dc.subjectRoot volume
dc.subjectYeast collection
dc.titleScreening for indole-3-acetic acid synthesis and 1-aminocyclopropane-carboxylate deaminase activity in soil yeasts from Chile uncovers Solicoccozyma aeria as an effective plant growth promoter
dc.typeartículo
dc.volumen496
sipa.codpersvinculados1047060
sipa.codpersvinculados1070717
sipa.codpersvinculados100191
sipa.codpersvinculados1199772
sipa.codpersvinculados1020221
sipa.trazabilidadORCID;2024-05-06
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