| Autor: |
Salinas-Virgen LI; Doctorado en Ciencias Agropecuarias, Universidad Autónoma Metropolitana-Xochimilco, Mexico City 04960, Mexico., de la Torre-Hernández ME; CONAHCYT-Universidad Autónoma Metropolitana-Xochimilco, Mexico City 04960, Mexico.; Departamento Sistemas Biológicos, Universidad Autónoma Metropolitana-Xochimilco, Mexico City 04960, Mexico., Aguirre-Garrido JF; Departamento de Ciencias Ambientales, Universidad Autónoma Metropolitana-Lerma, Lerma de Villada 52004, Mexico., Martínez-Abarca F; Departamento de Microbiología del Suelo y la Planta, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, 18008 Granada, Spain., Ramírez-Saad HC; Departamento Sistemas Biológicos, Universidad Autónoma Metropolitana-Xochimilco, Mexico City 04960, Mexico. |
| Jazyk: |
angličtina |
| Zdroj: |
Microorganisms [Microorganisms] 2024 Jul 24; Vol. 12 (8). Date of Electronic Publication: 2024 Jul 24. |
| DOI: |
10.3390/microorganisms12081512 |
| Abstrakt: |
Plant growth-promoting rhizobacteria (PGPR) are a group of bacteria that associate with the rhizosphere of plants; one of the most abundant bacterial genera in this ecological niche is Pseudomonas , which is constantly expanding due to the emergence of new species such as Pseudomonas atacamensis , whose discovery in 2019 has led to the characterization of several strains from different environments but taxonomically related. The objective of this work was to phenotypically and molecularly characterize P. atacamensis strain EMP42, isolated from the rhizosphere of Echinocactus platyacanthus . The strain EMP42 is able to use different substrates and reduce oxidative stress in plants. It is capable of improving growth parameters such as the number of inflorescences and the height of the aerial body of Arabidopsis thaliana , as well as the germination and seedling survival of the cacti Echinocactus platyacanthus and Astrophytum capricorne . The genetic structure of P. atacamensis EMP42 consists of a closed chromosome of 6.14 Mbp, and 61.1% GC content. It has 5572 genes, including those associated with PGPR activities, such as the trp ABCDE, SAP, pho ABPRU and acs ABC genes, among others, and three ncRNA loci, nine regulatory regions, five complete rRNA operons and three CRISPR-Cas loci, showing phylogenomic similarities with the reference strain P. atacamensis B21-026. Therefore, this study contributes to the understanding of genomic diversity within P. atacamensis and, particularly, highlights the potential application of strain EMP42 as a PGPR. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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