2026-09-16T19:41:51Zhttps://gredos.usal.es/oai/request

oai:gredos.usal.es:10366/1452342025-04-30T20:48:01Zcom_10366_110570com_10366_4576com_10366_3823col_10366_110571

Santamaría, Ramón I. Martínez-Carrasco, Ana Torres-Vila, Luis M. Bonal, Raúl Martín, Jesús Tormo, Rubén Reyes, Fernando Genilloud, Olga Sánchez de la Nieta Moreno, Ricardo Díaz Martínez, Margarita María 2021-02-12T11:32:04Z 2021-02-12T11:32:04Z 2020 Santamaría, R.I. ; Martínez Carrasco, A. [et al.] (2020). Characterization of Actinomycetes Strains Isolated from the Intestional Tract and Feces of the Larvae of the Longhorn Beetle Cerambyx welensii. Microorganisms, 8(12), pp. 1-14. doi:10.3390/microorganisms8122013 http://hdl.handle.net/10366/145234 10.3390/microorganisms8122013 2076-2607 [EN]Actinomycetes constitute a large group of Gram-positive bacteria present in different habitats. One of these habitats involves the association of these bacteria with insects. In this work, we have studied twenty-four actinomycetes strains isolated from the intestinal tract and feces from larvae of the xylophagous coleopteran Cerambyx welensii and have shown that seventeen strains present hydrolytic activity of some of the following substrates: cellulose, hemicellulose, starch and proteins. Fourteen of the isolates produce antimicrobial molecules against the Gram-positive bacteria Micrococcus luteus. Analysis of seven strains led us to identify the production of a wide number of compounds including streptanoate, alpiniamide A, alteramides A and B, coproporphyrin III, deferoxamine, demethylenenocardamine, dihydropicromycin, nocardamine, picromycin, surugamides A, B, C, D and E, tirandamycins A and B, and valinomycin. A significant number of other compounds, whose molecular formulae are not included in the Dictionary of Natural Products (DNP), were also present in the extracts analyzed, which opens up the possibility of identifying new active antibiotics. Molecular identification of ten of the isolated bacteria determined that six of them belong to the genus Streptomyces, two of them are included in the genus Amycolatopsis and two in the genus Nocardiopsis. eng http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Actinomycetes Streptomyces Amycolatopsis Nocardiopsis Cerambyx Antiobiotic production Hydrolytic enzymes Characterization of Actinomycetes Strains Isolated from the Intestinal Tract and Feces of the Larvae of the Longhorn Beetle Cerambyx welensii info:eu-repo/semantics/article