The bacterial populations associated with sea ice sampled from Antarctic coastal areas were investigated by use of a phenotypic approach and a phylogenetic approach based on genes encoding 16S rRNA (16S rDNA). The diversity of bacteria associated with sea ice was also compared with the bacterial diversity of seawater underlying sea ice. Psychrophilic (optimal growth temperature, < or = 15 degre...

BACKGROUND Generally, extremophiles have been deemed to survive in the extreme environments to which they had adapted to grow. Recently many extremophiles have been isolated from places where they are not expected to grow. Alkaliphilic microorganisms have been isolated from acidic soil samples with pH 4.0, and thermophiles have been isolated from samples of low temperature. Numerous moderately ...

The growth and production of yeast in the industrial fermentation are seriously restrained by heat stress and exacerbated by heat induced oxidative stress. In this study, a novel synthetic biology approach was developed to globally boost the viability and production ability of S. cerevisiae at high temperature through rationally designing and combing heat shock protein (HSP) and superoxide dism...

Halophilic and halo-tolerant bacteria are micro-organisms that living in hyper saline environments. They have many potential several fields life such as Industry agriculture. In this study a total of 17 isolates were obtained from the four ponds Qarun Lake on Nutrient Agar (NA) medium prepared using ponds' water. The 16S rRNA analysis showed our affiliated with groups, Firmicutes (47.06% isolat...