| Literature DB >> 10436920 |
Abstract
Using a glnII (encoding glutamine synthetase II) PCR selective screening, a Frankia ACN14a gene library clone was isolated. A derived glnII-hybridising 2.7-kb HindIII subclone was characterised. Identities of 95% and 93% were observed, respectively, with the corresponding Frankia CpI1 glnI and glnII regions. A variable segment of the glnII region was selected, PCR amplified from various Frankia genomes, sequenced, and used to investigate phylogenetic relationships within the genus. glnII phylogenetic inferences are well-resolved and allowed us to deduce evolutionary trends among Frankia. Frankia radiation seems to begin with a diversification according to the ability or not to infect actinorhizal plants. The infective strains are divided into two clusters matching plant-colonising specificities.Entities:
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Year: 1999 PMID: 10436920 DOI: 10.1111/j.1574-6968.1999.tb13709.x
Source DB: PubMed Journal: FEMS Microbiol Lett ISSN: 0378-1097 Impact factor: 2.742