Article
Diversity and antimicrobial activities of the fungal endophyte community associated with the traditional Brazilian medicinal plant Solanum cernuum Vell. (Solanaceae)
Registro en:
VIEIRA, Mariana de Lourdes Almeida et al. Diversity and antimicrobial activities of the fungal endophyte community associated with the traditional Brazilian medicinal plant Solanum cernuum Vell. (Solanaceae). Canadian Journal of Microbiology, vol.58, pp. 54-66, 2012.
0008-4166
10.1139/w11-105
Autor
Vieira, Mariana de Lourdes Almeida
Hughes, Alice Ferreira da silva
Gil, Viviane Brey
Vaz, Aline Bruna Martins
Alves, Tânia Maria Almeida
Zani, Carlos Leomar
Rosa, Carlos Augusto
Henrique, Rosa, Luiz
Resumen
The diversity and antimicrobial activity of endophytic fungi associated with the Brazilian medicinal plant Solanum cernuum Vell. were studied during summer and winter seasons. A total of 246 fungal isolates were obtained, including 225 filamentous fungi and 21 yeasts. They were identified by morphological, physiological, and molecular methods. Fifty-five different taxa represented by the phyla Ascomycota (33 taxa), Basidiomycota (21 taxa), and Zygomycota (one taxon) were identified. The most abundant taxa were closely related to Arthrobotrys foliicola, Colletotrichum gloeosporioides, Coprinellus radians, Glomerella acutata, Diatrypella frostii, Phoma glomerata, Mucor sp., Phlebia subserialis, Phoma moricola, Phanerochaete sordida, and Colletotrichum sp. A total of 265 fungal extracts were screened and 64 (26.01%) displayed antimicrobial activities. Among these extracts, 18 (28.12%) presented antibacterial and antifungal activities, 42 (65.62%) displayed selective antibacterial activity, and four (6.25%) exhibited only antifungal activity. The best values of minimum inhibitory concentration were obtained from extracts of Cryptococcus rajasthanensis, Glomerella acutata, Leptosphaeria sp., and Phoma glomerataranging from 7.8 to 15.62 µg/mL. This study is the first survey of the endophytic fungi community associated withS. cernuum, and our results show that they can represent a promising source of bioactive compounds.