African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12482

Full Length Research Paper

Botrallin from the endophytic fungus Hyalodendriella sp. Ponipodef12 and its antimicrobial activity

  Lingyun Zhong1, Liang Xu1, Xiangjie Meng1, Youliang Peng1, Yuanquan Chen1, Peng Sui1, Mingan Wang2 and Ligang Zhou1*  
  1College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China. 2College of Science, China Agricultural University, Beijing 100193, China.  
Email: [email protected]

  •  Accepted: 04 November 2011
  •  Published: 12 December 2011

Abstract

 

Bioassay-guided fractionation of the crude methanol extract of the mycelia from the endophytic fungus Hyalodendriella sp. Ponipodef12, associated with the hybrid 'Neva' of Populus deltoides Marsh × P. nigra L., led to the isolation of one compound coded as P12-1 which was identified as botrallin (1,7-dihydroxy-3,9- dimethoxy-4a-methyl-6H- dibenzo [b,d] pyran-2,6 (4aH) -dione) by spectroscopic and physicochemical means. The median inhibitory concentration (IC50) and minimum inhibitory concentration (MIC) of botrallin against Bacillus subtilis were 98.47 µg/ml and 200 µg/ml, respectively. The IC50 values of botrallin against spore germination ofMagnaporthe oryzae and Botryosphaeria dothidea were 81.62 µg/ml and 110.02 µg/m, respectively. This is the first report about botrallin and its antimicrobial activity from the endophytic fungus Hyalodendriella sp. Ponipodef12 derived from Populusspecies.

 

Key words: Poplar hybrid 'Neva', endophytic fungus, Hyalodendriella sp., botrallin, antimicrobial activity.