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Biology bacteriocyte-associated endosymbionts of plant sap-sucking insects.
  • P. Baumann
  • Biology, Medicine
  • Annual review of microbiology
  • 9 September 2005
Psyllids, whiteflies, aphids, and mealybugs are members of the suborder Sternorrhyncha and share a common property, namely the utilization of plant sap as their food source, and the different properties of the genomes and fragments of the genome suggest that there are different constraints on the permissible evolutionary changes. Expand
Taxonomy of aerobic marine eubacteria.
Two hundred and eighteen strains of nonfermentative marine bacteria were submitted to an extensive morphological, physiological, and nutritional characterization, finding that the majority of these groups were separable by a large number of unrelated phenotypic traits. Expand
A molecular clock in endosymbiotic bacteria is calibrated using the insect hosts
Rates calibrated using dates inferred from fossil aphids imply that Asian and American species of the aphid tribe Melaphidina diverged by the early Eocene; this result confirms an earlier hypothesis based on biogeographic evidence. Expand
Organization of the mitochondrial genomes of whiteflies, aphids, and psyllids (Hemiptera, Sternorrhyncha)
Two species of whiteflies, one psyllid and one aphid have mitochondrial genomes with a gene order very similar to that of the proposed insect ancestor, indicating a transposition in the ancestor of these clusters. Expand
Sequence evolution in bacterial endosymbionts having extreme base compositions.
Phylogenetic reconstruction of amino acid replacements indicates that replacements yielding increased A + T predominated early in the evolution of Buchnera, with the trend slowing or stopping during the last 50 Myr, suggesting that base composition in BuchnerA has approached a limit enforced by selective constraint acting on protein function. Expand
Genetics, physiology, and evolutionary relationships of the genus Buchnera: intracellular symbionts of aphids.
Genetic and physiological studies indicate that Buchnera can synthesize methionine, cysteine, and tryptophan and supply these amino acids to the aphid host and involve plasmid-amplification of the gene coding for anthranilate synthase, the first enzyme of the tryptophile biosynthetic pathway. Expand
A study of the Moraxella group. II. Oxidative-negative species (genus Acinetobacter).
Neither the hydrolysis of gelatin nor acid production from aldose sugars was found to be a reliable index of strain affinities indicated by the phenotypic analysis, although both properties were of some use in distinguishing between the subgroups. Expand
Secondary (γ-Proteobacteria) Endosymbionts Infect the Primary (β-Proteobacteria) Endosymbionts of Mealybugs Multiple Times and Coevolve with Their Hosts
The results of phylogenetic analyses of mitochondrial DNA fragments encoding cytochrome oxidase subunits I and II from four representative mealybugs species were in agreement with the results of 16S-23S rDNA analyses, suggesting that relationships among strains of “Candidatus T. princeps” are useful in inferring the phylogeny of their mealybug hosts. Expand
Cospeciation of Psyllids and Their Primary Prokaryotic Endosymbionts
The rate of sequence change in the 16S-23S rDNA of the psyllid P endosymbiont was considerably higher than that of other bacteria, including other fast-evolving insect endosYmbionts. Expand
Taxonomy of marine bacteria: the genus Beneckea.
Nine groups which had deoxyribonucleic acid (DNA) containing 45 to 48 moles per cent guanine plus cytosine (GC) were assigned to a redefined genus Beneckea, and all of the strains in this genus, when grown in liquid medium, had a single, polar flagellum. Expand