Studies from Spanish National Research Council (CSIC) Provide New Data on Proteobacteria

By a News Reporter-Staff News Editor at Life Science Weekly -- Researchers detail new data in Proteobacteria. According to news reporting originating from Granada, Spain, by NewsRx correspondents, research stated, "Symbiotic chronic infection of legumes by rhizobia involves transition of invading bacteria from a free-living environment in soil to an intracellular state as differentiated nitrogen-fixing bacteroids within the nodules elicited in the host plant. The adaptive flexibility demanded by this complex lifestyle is likely facilitated by the large set of regulatory proteins encoded by rhizobial genomes."

Our news editors obtained a quote from the research from Spanish National Research Council (CSIC), "However, proteins are not the only relevant players in the regulation of gene expression in bacteria. Large-scale high-throughput analysis of prokaryotic genomes is evidencing the expression of an unexpected plethora of small untranslated transcripts (sRNAs) with housekeeping or regulatory roles. sRNAs mostly act in response to environmental cues as post-transcriptional regulators of gene expression through protein-assisted base-pairing interactions with target mRNAs. Riboregulation contributes to fine-tune a wide range of bacterial processes which, in intracellular animal pathogens, largely compromise virulence traits. Here, we summarize the incipient knowledge about the noncoding RNome structure of nitrogen-fixing endosymbiotic bacteria as inferred from genome-wide searches for sRNA genes in the alfalfa partner Sinorhizobium meliloti and further comparative genomics analysis."

According to the news editors, the research concluded: "The biology of relevant S. meliloti RNA chaperones (e.g., Hfq) is also reviewed as a first global indicator of the impact of riboregulation in the establishment of the symbiotic interaction."

For more information on this research see: Insights into the noncoding RNome of nitrogen-fixing endosymbiotic a-proteobacteria. Molecular Plant-microbe Interactions, 2013;26(2):160-7. Molecular Plant-microbe Interactions can be contacted at: Amer Phytopathological Soc, 3340 Pilot Knob Road, St Paul, MN 55121, USA (see also Proteobacteria).

The news editors report that additional information may be obtained by contacting J.I. Jimenez-Zurdo, Grupo de Ecologia Genetica de la Rizosfera, Estacion Experimental del Zaidin, Consejo Superior de Investigaciones Cientificas (CSIC), 18008 Granada, Spain.

Publisher contact information for the journal Molecular Plant-microbe Interactions is: Amer Phytopathological Soc, 3340 Pilot Knob Road, St Paul, MN 55121, USA.

Keywords for this news article include: Spain, Europe, Granada, Nitrogen, Proteobacteria.

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