Search USGS⌕ Search

Geology topics

Hancock T.L. Connell

Publications and source records attributed to Hancock T.L. Connell.

2 recordsLinked to original sources

Aminobacter ciceronei sp. nov. and Aminobacter lissarensis sp. nov., isolated from various terrestrial environments

The bacterial strains IMB-1 T and CC495 T , which are capable of growth on methyl chloride (CH 3 Cl, chloromethane) and methyl bromide (CH 3 Br, bromomethane), were isolated from agricultural soil in California fumigated with CH 3 Br, and woodland soil in Northern Ireland, respectively. Two pesticide-/herbicide-degrading bacteria, strains ER2 and C147, were isolated from agricultural soil in Canada. Strain ER2 degrades N -methyl carbamate insecticides, and strain C147 degrades triazine herbicides widely used in agriculture. On the basis of their morphological, physiological and genotypic characteristics, these four strains are considered to represent two novel species of the genus Aminobacter , for which the names Aminobacter ciceronei sp. nov. (type strain IMB-1 T =ATCC 202197 T =CIP 108660 T =CCUG 50580 T ; strains ER2 and C147) and Aminobacter lissarensis sp. nov. (type strain CC495 T =NCIMB 13798 T =CIP 108661 T =CCUG 50579 T ) are proposed.

International Journal of Systematic and Evolutiona↗

Strain IMB-1, a novel bacterium for the removal of methyl bromide in fumigated agricultural soils

A facultatively methylotrophic bacterium, strain IMB-1, that has been isolated from agricultural soil grows on methyl bromide (MeBr), methyl iodide, methyl chloride, and methylated amines, as well as on glucose, pyruvate, or acetate. Phylogenetic analysis of its 16S rRNA gene sequence indicates that strain IMB-1 classes in the alpha subgroup of the class Proteobacteria and is closely related to members of the genus Rhizobium . The ability of strain IMB-1 to oxidize MeBr to CO 2 is constitutive in cells regardless of the growth substrate. Addition of cell suspensions of strain IMB-1 to soils greatly accelerates the oxidation of MeBr, as does pretreatment of soils with low concentrations of methyl iodide. These results suggest that soil treatment strategies can be devised whereby bacteria can effectively consume MeBr during field fumigations, which would diminish or eliminate the outward flux of MeBr to the atmosphere.

Applied and Environmental Microbiology↗