Journal of Microbiology

Research Support, Non-U.S. Gov'ts

NOTE] GFP-Expressing Influenza A Virus for Evaluation of the Efficacy of Antiviral Agents: Jin Il Kim , Sehee Park , Ilseob Lee , Sangmoo Lee , Saem Shin , Yongkwan Won , Min-Woong Hwang , Joon-Yong Bae , Jun Heo , Hye-Eun Hyun , Hyejin Jun , Soon Sung Lim , Man-Seong Park; J. Microbiol. 2012;50(2):359-362. Published online April 27, 2012; DOI: https://doi.org/10.1007/s12275-012-2163-9

Abstract: To address its value as a screening tool in the development of antiviral drugs, a recombinant influenza virus expressing green fluorescent protein (rPR8-GFP virus) was investigated in vitro and in vivo. The inhibition of viral growth by a neuraminidase inhibitor in the cells or lower respiratory tracts of mice could be visualized by the level of fluorescence. In addition, the rPR8-GFP virus exhibited high pathogenicity in mice. Taken together, these results suggest that the rPR8-GFP virus can be a useful tool for the rapid identification of antiviral drugs active against influenza viruses.

Evaluation of Endophytic Colonization of Citrus sinensis and Catharanthus roseus Seedlings by Endophytic Bacteria: Paulo Teixeira Lacava , Welington Luiz Araujo , Joao Lucio Azevedo; J. Microbiol. 2007;45(1):11-14.; DOI: https://doi.org/2498 [pii]

Abstract: Over the last few years, the endophytic bacterial community associated with citrus has been studied as an important component interacting with Xylella fastidiosa, the causal agent of citrus variegated chlorosis (CVC). This bacterium may also colonize some model plants, such as Catharanthus roseus and Nicotiana clevelandii. In the present study, we compared the endophytic colonization of Citrus sinensis and Catharanthus roseus using the endophytic bacteria Klebsiella pneumoniae. We chose an appropriate strain, K. pneumoniae 342 (Kp342), labeled with the GFP gene. This strain was inoculated onto seedlings of C. sinensis and C. roseus. The isolation frequency was determined one week after the inoculation and the endophytic colonization of K. pneumoniae was observed using fluorescence microscopy. Although the endophytic bacterium was more frequently isolated from C. roseus than from C. sinensis, the colonization profiles for both host plants were similar, suggesting that C. roseus could be used as a model plant to study the interaction between endophytic bacteria and X. fastidiosa.

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