November 2014

Optimization of fermentation conditions for the anti-cyanobacterial substances production by Streptomyces sp. HJC-D1 using response surface methodology

To investigate the influence of fermentation conditions such as temperature, initial pH, volume and agitation rate on anti-cyanobacterial active substances production, response surface methodology (RSM) was carried out to optimize the fermentation conditions of an anti-cyanobacterium Streptomyces sp. HJC-D1, and the anti-cyanobacterial effect was evaluated. Most common and widespread bloom-forming cyanobacterium...

Author(s): Yun Kong, Pei Zou, Jiaoqin Qi, Liming Song, Fei Shao, An Zheng, Chengcheng Xie, Jianzhong Zhou, Liang Zhu and Xiangyang Xu

November 2014

Fungal endophytes of sorghum in Burkina Faso: Occurrence and distribution

A survey was conducted to assess the natural occurrence and distribution of fungal endophytes in sorghum in relation to plant performance in two distinct agro-ecological zones in Burkina Faso. Sorghum farm-saved seeds were sown in 48 farmers’ fields in Sahelian and North Sudanian zones to produce sorghum plants. In each field, leaf samples were collected from five well-developed (performing) and five...

Author(s): Zida, E. P., Thio, I. G., Néya B. J., O’Hanlon, K., Deleuran, L. C., Wulff, E. G., Lund, O. S., Shetty, P. H. and Boelt, B.

November 2014

Improvement of soybean growth and productivity by inoculation with two yeast species in new reclaimed sandy soil amended with humic acid

The use of biofertilizers and organic matter can eventually reduce the need for inorganic synthetic fertilizers which are potentially more detrimental to the environment. The objective of this work was to study the impact of soil inoculation with Rhodotorula mucilaginosa MB151 and Saccharomyces cerevisiae 66 in a soil inoculated with Bradyrhizobium japonicum 110 and amended with different concentrations of humic acid...

Author(s): Ebtsam M. Morsy, Nadia H. El-Batanony and Osama N. Massoud

November 2014

Effect of bacteria biomass detachment on the ammonium oxidation yield

Nitrification yield can be affected by fixed biomass or biofilm density. Infact, biofilm detachment may influence the nitrification. The present experiment investigated the effect of detachment biomass cells on nitrifying bacteria expressed via nitrification rate. We monitored nitrification rates before and after biomass detachment from gravel sampled in a small-scale model of wastewater treatment using macrophytes in...

Author(s): Ben Rajeb Asma, Mehri Inès, Nasr Houda, Fievez Thierry, Hassen Abdennasser and Culot Marc