FEMS Microbiology Letters

Editorial       Editorial: Microbial food and feed ingredients – reconciling tradition and novelty     Egon Bech Hansen; Dennis Sandris Nielsen; Gisèle LaPointe

Biotechnology and Synthetic Biology       Conserved motifs in the CRISPR leader sequence control spacer acquisition levels in Type I-D CRISPR-Cas systems     Sebastian N Kieper ; Cristóbal Almendros; Stan J J Brouns   Conserved nucleotide motifs in the CRISPR leader sequence control spacer acquisition levels of CRISPR-Cas systems

Environmental Microbiology       Brazilian-adapted soybean Bradyrhizobium strains uncover IS elements with potential impact on biological nitrogen fixation     Gesiele Almeida Barros-Carvalho; Mariangela Hungria; Fabrício Martins Lopes ; Marie-Anne Van Sluys   The contribution of insertion sequences to the diversity of soybean-nodulating Bradyrhizobium strains in Brazil.     Fecal microbiota of captive Antillean manatee Trichechus manatus manatus     Akihiko Suzuki; Keiichi Ueda; Takao Segawa; Miwa Suzuki   The novelty of this study is revealing the characteristics of intestinal microbiota of captive manatees and the differences in that of captive and wild manatees for the first time.     Comparative analysis of gut bacterial communities in housefly larvae fed different diets using a high-throughput sequencing approach     Zhijing Xue; Junli Zhang; Ruiling Zhang; Zhendong Huang; Qing Wan ...   High-fat diets are more suitable for housefly larvae to improve the diversity of intestinal bacteria and host immunity compared with high-protein, high-starch or wheat bran diets.

Food Microbiology       Metagenomic analysis of bacterial community composition in Dhanaan: Ethiopian traditional fermented camel milk     Tesfemariam Berhe; Richard Ipsen; Eyassu Seifu; Mohamed Y Kurtu; Angelina Fugl ...   Metagenomic analysis of bacterial community composition in Dhanaan: Ethiopian traditional fermented camel milk showed that Dhanaan is dominated by pathogenic and classical as well as non-classical lactic acid bacteria species.     Effects of synbiotics on the gut microbiota, blood and rearing parameters of chickens     Katarzyna Śliżewska; Paulina Markowiak; Artur Żbikowski; Piotr Szeleszczuk   The use of synbiotics as feed additives is very promising. The aim is to improve animal health, quality and safety of meat, also respect for the natural environment is taken into account.

Physiology and Biochemistry       MgrB affects the acid stress response of Escherichia coli by modulating the expression of iraM     Jintian Xu; Ting Li; Yunrong Gao; Jiaoyu Deng ; Jing Gu   This study shows that MgrB affects acid resistance of E. coli by modulating the expression of iraM. The known PhoP/Q-IraM pathway contributed to it but the modulation is not completely through the pathway, which merits further investigation.     GalK limits type I-F CRISPR-Cas expression in a CRP-dependent manner     Hannah G Hampton; Adrian G Patterson; James T Chang; Corinda Taylor ; Peter C Fineran   Galactose metabolism contributes to CRISPR-Cas regulation

Professional Development       The impact factor: implications for research policy, editorial rules and scholarly reputation     Juan Carlos Argüelles; Raquel Argüelles-Prieto   The Impact Factor has become an essential tool for research policy and scientific publication. However, there is a permanent controversy concerning its inappropriate application.     #EUROmicroMOOC: using Twitter to share trends in Microbiology worldwide     I López-Goñi; J Giner-Lamia; A Álvarez-Ordoñez; Alfonso Benitez-Páez ; D Claessen ...   Trends in Microbiology by Twitter.

Taxonomy and Systematics       Altererythrobacter rubellus sp. nov., a marine alphaproteobacterium isolated from seawater     Jaewoo Yoon; Jaewon Ryu   Based on distinct phylogenetic and phenotypic evidence, the novel strain KMU-45Trepresents a new species of the genus Altererythrobacter, Altererythrobacter rubellus sp. nov.

Incubator     Mini Review   Staring into the void: demystifying microbial metabolomics     Cynthia M Grim; Gordon T Luu; Laura M Sanchez   A short review on mass spectrometry based metabolomic approaches for microbes.   Mini Review   A multidimensional perspective on microbial interactions     Alan R Pacheco; Daniel Segrè   Reports of inter-species interactions in microbial communities contain abundant information that defies simple ecological categorizations. Vectors of attributes can formally capture this knowledge, helping create interaction catalogues and predictive models.