Activity of Antarctic fungi extracts against phytopathogenic bacteria

作者：Puric J; Vieira G; Cavalca L B; Sette L D; Ferreira H; Vieira M L C; Sass D C^*

来源：Letters in Applied Microbiology, 2018, 66(6): 530-536.

DOI：10.1111/lam.12875

• antibacterial
• passionfruit
• phytopathogen
• tomato
• Xanthomonas

This study aims to obtain secondary metabolites extracts from filamentous fungi isolated from soil and marine sediments from Antarctic ecosystems and to assess its potential antibacterial activity on Xanthomonas euvesicatoria and Xanthomonas axonopodis pv. passiflorae (phytopathogenic bacteria causing diseases in pepper and tomato and passionfruit, respectively). Among the 66 crude intracellular and extracellular extracts obtained from fungi recovered from soil and 79 obtained from marine sediment samples, 25 showed the ability to prevent the growth of X. euvesicatoria invitro and 28 showed the ability to prevent the growth of X. axonopodis pv. passiflorae invitro. Intracellular and extracellular extracts from soil fungi inhibited around 97% of X. euvesicatoria and 98% of X. axonopodis pv. passiflorae at 2.1 mg ml(-1). The average inhibition rates against X. euvesicatoria and X. axonopodis pv. passiflorae for intracellular and extracellular extracts from marine sediments fungi were around 96 and 97%, respectively, at 3.0 mg ml(-1). Extracts containing secondary metabolites with antimicrobial activity against X. euvesicatoria and X. axonopodis pv. passiflorae were obtained, containing possible substitutes for the products currently used to control these phytopathogens.

• 出版日期2018-6