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The strain identity was confirmed by 16S rRNA-based phylogeny and Scanning Electron Microscopy (SEM). Ethyl acetate and chloroform (1\u2009:\u20091 v\/v) extracts from the endophyte were tested for antimicrobial and antioxidant activity on a total of 7 bacterial species (3 Gram-positive and 4 Gram-negative) using the standard Minimum Inhibitory Concentration (MIC) protocol and Quantitative Radical Scavenging activity using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) assay, respectively. The MICs were recorded at 250\u2009<jats:italic>\u03bc<\/jats:italic>g\/mL for <jats:italic>B. subtilis<\/jats:italic> ATCC 19659, <jats:italic>B. cereus<\/jats:italic> ATCC 1076, <jats:italic>E. coli<\/jats:italic> ATCC1053, and 62.5\u2009<jats:italic>\u03bc<\/jats:italic>g\/mL for <jats:italic>K. oxytoca<\/jats:italic> ATCC 13182 and <jats:italic>M. smegmatis<\/jats:italic> ATCC 21293, while an IC<jats:sub>50<\/jats:sub> of 5.65\u2009<jats:italic>\u03bc<\/jats:italic>g\/mL was recorded with the DPPH assay. Qualitative phytochemical analysis was positive for alkaloids, flavonoids, and steroids. Gas chromatography\/mass spectrometry (GC\/MS) analysis revealed the presence of 9-octadecene, 2,4-dinitrophenyl acetate, and 2(5H)-furanone, which have been previously reported for the targeted activities. <jats:italic>M. radiotolerans<\/jats:italic> MAMP 4754 tested positive for antimicrobial and antioxidant activity and this is linked to the production of plant-derived secondary metabolites by this strain.<\/jats:p>","DOI":"10.1155\/2020\/9483670","type":"journal-article","created":{"date-parts":[[2020,2,25]],"date-time":"2020-02-25T18:32:01Z","timestamp":1582655521000},"page":"1-11","source":"Crossref","is-referenced-by-count":83,"title":["Antimicrobial and Antioxidant Properties of a Bacterial Endophyte, <i>Methylobacterium radiotolerans<\/i> MAMP 4754, Isolated from <i>Combretum erythrophyllum<\/i> Seeds"],"prefix":"10.1155","volume":"2020","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6912-8238","authenticated-orcid":true,"given":"Mampolelo 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