Metagenomics approaches represent an important way to acquire information on the
microbial communities present in complex environments like soil. However, to what extent …

The members of the actinomycete genus Frankia are nitrogen-fixing symbionts of many
species of woody dicotyledonous plants belonging to eight families. Several strains isolated …

There is an increased interest in the extraction of nucleic acids from various environmental
samples, since molecular techniques allow less biased access to a greater portion of …

In order to develop a rapid and specific detection test for bacteria in soil, we improved a
method based on the polymerase chain reaction (PCR). Each step of the protocol, including …

Although the biological conversion of nitrite to nitrate is a well-known process, studies of
Nitrobacter populations are hindered by their physiological characteristics. This report …

Symbiotic association of the N 2-fixing actinomycete Frankia with the roots of more than 200
tree species from 24 genera of 8 families of angiosperms has been studied since 1829. The …

The polymerase chain reaction (PCR) is an in vitro procedure for primer-directed enzymatic
amplification of specific template nucleic acid sequences. In order to determine whether a …

DNA sequences from the intergenic spacer (IGS) region of the ribosomal operon were
amplified by the polymerase chain reaction (PCR) technique using two primers derived from …

The diversity among 43 isolates of the genus Frankia was studied by determining levels of
deoxyribonucleic acid relatedness (SI nuclease method) and DNA base compositions. The …

Les processus infectieux des symbioses Frankia-Alnus et Rhizobium-légumineuses
présentent de fortes similarités, laissant supposer l'existence d'analogies entre le facteur …