Exopolysaccharide basic was obtained from a submerged culture of a native Paecilomyces sp. strain isolated from Chilean soil.

Since its first announcement by P. Sensi et at. in 19591}, the rifamycin complex has been extensively studied by a number of workers2). The type culture Nocardia mediterranea (Margalith et Beretta) Thiemann et at. 1969*, then known as Streptomyces mediterranei^ was isolated from a soil sample collected in France. Sugawara et al.l) culturing an isolate (4107 A2) from a Japanese soil sample, repo...

Burkholderia pseudomallei is the cause of melioidosis, a severe and potentially fatal disease of humans and animals. It is endemic in northern Australia and Southeast Asia and is found in soil and surface water. The environmental distribution of B. pseudomallei worldwide and within countries where it is endemic, such as the Lao People's Democratic Republic (Laos), remains unclear. However, this...

A b s t I' act. Maintaining soil productivity is essential if agri­ culture production systems are to be sustainable, thus soil quality is an essential issue. However, there is a paucity of tools for mea­ surement for the purpose ofunderstanding changes in soil quality. Here the possibility of using fuzzy modeling theory as a means to address the problem of soil quality assessment is considered...

The prominence of fresh produce as a vehicle for foodborne pathogens such as enterohaemorrhagic Escherichia coli (EHEC) O157 is rising, where disease cases can cause hospitalization and in some cases death. This rise emphasises the necessity for accurate and sensitive methods for detection of pathogens in soil, potential sources of contamination of fresh produce. The complexity of the soil matr...

The production and quality of Rehmannia glutinosa can be dramatically reduced by replant disease under consecutive monoculture. The root-associated microbiome, also known as the second genome of the plant, was investigated to understand its impact on plant health. Culture-dependent and culture-independent pyrosequencing analysis was applied to assess the shifts in soil bacterial communities in ...

The study was carried out to compare generally used screening methods for salt tolerance: (i) a seedling-based, solution culture method, (ii) plant yield-based, soil method. The physiological and ionic analyses were used for comparisons of methodologies along with yield in soil based systems. The two methods were similar to each other by reproducing similar rankings for genotypes across the met...

A culture-independent survey was performed to search for 16S rRNA gene sequences representing dominant and metabolically active bacteria in rhizosphere soil. PCR- and reverse transcription-PCR-derived clone libraries were constructed from DNA and RNA directly extracted from the soil sample. Acidobacteria-related sequences occupied an unusually large proportion (>50%) of both rDNA- and rRNA-deri...

Polycyclic aromatic hydrocarbons (PAHs) are major pollutants globally and due to their carcinogenic and mutagenic properties their clean-up is paramount. Bioremediation or using PAH degrading microorganisms (mainly bacteria) to degrade the pollutants represents cheap, effective methods. These PAH degraders harbor functional genes which help microorganisms use PAHs as source of food and energy. ...