Blar i forfatter "Jensen, John Beck"
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A Genetic and Chemical Perspective on Symbiotic Recruitment of Cyanobacteria of the Genus Nostoc into the Host Plant Blasia pusilla L.
Liaimer, Anton; Jensen, John Beck; Dittmann, Elke (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-01)Liverwort Blasia pusilla L. recruits soil nitrogen-fixing cyanobacteria of genus Nostoc as symbiotic partners. In this work we compared Nostoc community composition inside the plants and in the soil around them from two distant locations in Northern Norway. STRR fingerprinting and 16S rDNA phylogeny reconstruction showed a remarkable local diversity among isolates assigned to several Nostoc ... -
On the resistance of epiphytic cyanobacteria of the Kola Bay to the effects of oil hydrocarbons in the aquatic ecosystem
Pugovkin, Dmitry V.; Miroshnichenko, E.S.; Voskoboinikov, Grigory M.; Jensen, John Beck; Liaimer, Anton (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)The epiphytic communities of cyanobacteria of Fucus vesiculosus L. of the Kola Bay are able to bear the high amounts of the oil products in the environment. The results of studying the resistance of epiphytic cyanobacterial communities to oil pollution using both classical (cultural) and molecular-genetic methods of microbiological analysis have been presented. The objects of the study are the ... -
The thuEFGKAB Operon of Rhizobia and Agrobacterium tumefaciens Codes for Transport of Trehalose, Maltitol, and Isomers of Sucrose and Their Assimilation through the Formation of Their 3-Keto Derivatives
Ampomah, Osei Yaw; Avetisyan, Anna; Hansen, Espen; Svenson, Johan; Huser, Thomas; Jensen, John Beck; Bhuvaneswari, T.V (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)The thu operon (thuEFGKAB) in Sinorhizobium meliloti codes for transport and utilization functions of the disaccharide trehalose. Sequenced genomes of members of the Rhizobiaceae reveal that some rhizobia and Agrobacterium possess the entire thu operon in similar organizations and that Mesorhizobium loti MAFF303099 lacks the transport (thuEFGK) genes. In this study, we show that this operon is ...