Publications

life under nutrient limitation in oligotrophic marine environments: an eco/physiological perspective of sphingopyxis alaskensis (formerly sphingomonas alaskensis).	the oceans of the world are nutrient-limited environments that support a dynamic diversity of microbial life. heterotrophic prokaryotes proliferate in oligotrophic regions and affect nutrient transformation and remineralization thereby impacting directly on the all marine biota. an important challenge in studying the microbial ecology of oligotrophic environments has been the isolation of ecologically important species. this goal has been recognized not only for its relevance in defining the dyn ...	2003	12632213
implications of rrna operon copy number and ribosome content in the marine oligotrophic ultramicrobacterium sphingomonas sp. strain rb2256.	sphingomonas sp. strain rb2256 is a representative of the dominant class of ultramicrobacteria that are present in marine oligotrophic waters. in this study we examined the rrna copy number and ribosome content of rb2256 to identify factors that may be associated with the relatively low rate of growth exhibited by the organism. it was found that rb2256 contains a single copy of the rrna operon, in contrast to vibrio spp., which contain more than eight copies. the maximum number of ribosomes per ...	1998	9797303