| phylogenetically distant intracellular symbionts in termites. | cockroaches are known to harbour intracellular bacteria in specialised cells (mycetocytes, or bacteriocytes) of the fat body. in termites, mycetocyte bacteria have been observed only in mastotermes darwiniensis. these symbionts are thought to have originated from a bacterium that infected an ancestor common to cockroaches and termites. thus, loss of the infection should have occurred during evolution in all termite lineages, with the exception of that leading to m. darwiniensis. one might suspec ... | 1997 | 9419851 |
| light and electron microscopic study of a rickettsiella species from the cockroach blatta orientalis. | an infection with rickettsiella sp. was responsible for an illness causing heavy body swelling in the oriental cockroach blatta orientalis. reproduction of the colony stagnated. vacuoles with parasitic bacteria occurred mainly in the fat body, but also in nearly all other organs, such as gut epithelium, malpighian tubules, blood cells, and ovarioles. the parasites clearly differed from the symbiotic bacteria of the genus blattabacterium, which regularly occur in the mycetocytes of b. orientalis. ... | 2000 | 11112369 |
| phylogenetic analysis of blattabacterium, endosymbiotic bacteria from the wood roach, cryptocercus (blattodea: cryptocercidae), including a description of three new species. | members of the cockroach genus cryptocercus are wood-feeding, subsocial insects that live in temperate forests of the nearctic and palaearctic. at present, nine species are recognized: cryptocercus relictus and cryptocercus kyebangensis in eastern asia and russia, cryptocercus primarius and cryptocercus matilei in southwestern china, cryptocercus clevelandi in the western usa, and cryptocercus darwini, cryptocercus garciai, cryptocercus punctulatus, and cryptocercus wrighti in the eastern usa. l ... | 2003 | 12470940 |
| evidence for cocladogenesis between diverse dictyopteran lineages and their intracellular endosymbionts. | bacteria of the genus blattabacterium are intracellular symbionts that reside in specialized cells of cockroaches and the termite mastotermes darwiniensis. they appear to be obligate mutualists, and are transmitted vertically in the eggs. such characteristics are expected to lead to equivalent phylogenies for host and symbiont, and we tested this hypothesis using recently accumulated data on relationships among termites and cockroaches and their blattabacterium spp. host and symbiont topologies ... | 2003 | 12716997 |
| distribution of the bacterial symbiont cardinium in arthropods. | abstract 'candidatus cardinium', a recently described bacterium from the bacteroidetes group, is involved in diverse reproduction alterations of its arthropod hosts, including cytoplasmic incompatibility, parthenogenesis and feminization. to estimate the incidence rate of cardinium and explore the limits of its host range, 99 insect and mite species were screened, using primers designed to amplify a portion of cardinium 16s ribosomal dna (rdna). these arthropods were also screened for the presen ... | 2004 | 15189221 |
| cockroaches that lack blattabacterium endosymbionts: the phylogenetically divergent genus nocticola. | phylogenetic relationships among termites, mantids and the five traditionally recognized cockroach families have been the subject of several studies during the last half-century. one cockroach lineage that has remained notably absent from such studies is the nocticolidae. this group of small, elusive surface- and cave-dwelling species from the old world tropics has been proposed to represent an additional family. using molecular sequences, we performed an initial phylogenetic examination of noct ... | 2007 | 17376757 |
| phylogenetic congruence of armored scale insects (hemiptera: diaspididae) and their primary endosymbionts from the phylum bacteroidetes. | insects in the sap-sucking hemipteran suborder sternorrhyncha typically harbor maternally transmitted bacteria housed in a specialized organ, the bacteriome. in three of the four superfamilies of sternorrhyncha (aphidoidea, aleyrodoidea, psylloidea), the bacteriome-associated (primary) bacterial lineage is from the class gammaproteobacteria (phylum proteobacteria). the fourth superfamily, coccoidea (scale insects), has a diverse array of bacterial endosymbionts whose affinities are largely unexp ... | 2007 | 17400002 |
| inherited fungal and bacterial endosymbionts of a parasitic wasp and its cockroach host. | bacterial endosymbionts of insects are increasingly being recognized as common, diverse, and integral to the biology of their hosts. inherited fungal symbionts have been largely overlooked, however, even though insect guts appear to be a key habitat for an incredible array of fungal diversity. like bacteria, fungal symbionts also likely play important roles in the ecology and evolution of their insect associates. the objective of this study was to lay the foundations for understanding the roles ... | 2009 | 18758845 |
| purification and partial genome characterization of the bacterial endosymbiont blattabacterium cuenoti from the fat bodies of cockroaches. | abstract: | 2008 | 19025664 |
| nitrogen recycling and nutritional provisioning by blattabacterium, the cockroach endosymbiont. | nitrogen acquisition and assimilation is a primary concern of insects feeding on diets largely composed of plant material. reclaiming nitrogen from waste products provides a rich reserve for this limited resource, provided that recycling mechanisms are in place. cockroaches, unlike most terrestrial insects, excrete waste nitrogen within their fat bodies as uric acids, postulated to be a supplement when dietary nitrogen is limited. the fat bodies of most cockroaches are inhabited by blattabacteri ... | 2009 | 19880743 |
| evolutionary convergence and nitrogen metabolism in blattabacterium strain bge, primary endosymbiont of the cockroach blattella germanica. | bacterial endosymbionts of insects play a central role in upgrading the diet of their hosts. in certain cases, such as aphids and tsetse flies, endosymbionts complement the metabolic capacity of hosts living on nutrient-deficient diets, while the bacteria harbored by omnivorous carpenter ants are involved in nitrogen recycling. in this study, we describe the genome sequence and inferred metabolism of blattabacterium strain bge, the primary flavobacteria endosymbiont of the omnivorous german cock ... | 2009 | 19911043 |
| chromosome stability and gene loss in cockroach endosymbionts. | insect endosymbiont genomes reflect massive gene loss. two blattabacterium genomes display colinearity and similar gene contents, despite high orthologous gene divergence, reflecting over 140 million years of independent evolution in separate cockroach lineages. we speculate that distant homologs may replace the functions of some eliminated genes through broadened substrate specificity. | 2010 | 20418442 |
| Genome Shrinkage and Loss of Nutrient-Providing Potential in the Obligate Symbiont of the Primitive Termite Mastotermes darwiniensis. | Beneficial microbial associations with insects are common and are classified as either one or a few intracellular species that are vertically transmitted and reside intracellularly within specialized organs or as microbial assemblages in the gut. Cockroaches and termites maintain at least one if not both beneficial associations. Blattabacterium is a flavobacterial endosymbiont of nearly all cockroaches and the termite Mastotermes darwiniensis and can use nitrogenous wastes in essential amino aci ... | 2012 | 22020505 |
| Genome Economization in the Endosymbiont of the Wood Roach Cryptocercus punctulatus Due to Drastic Loss of Amino Acid Synthesis Capabilities. | Cockroaches (Blattaria: Dictyoptera) harbor the endosymbiont Blattabacterium sp. in their abdominal fat body. This endosymbiont is involved in nitrogen recycling and amino acid provision to its host. In this study, the genome of Blattabacterium sp. of Cryptocercus punctulatus (BCpu) was sequenced and compared with those of the symbionts of Blattella germanica and Periplaneta americana, BBge and BPam, respectively. The BCpu genome consists of a chromosome of 605.7 kb and a plasmid of 3.8 kb and i ... | 2011 | 22094859 |
| [blattabacterium in the fat body of the maritime territory relic roach, cryptocercus relictus]. | rod-like symbiotic bacteria in the fat body of the cockroach cryptocercus relictus have a thin cell wall of the gram-positive type; the nucleoplasm in "diffuse". the septum connected with a massive mesosome is formed during cell division. the bacteria in the host cells are surrounded will several host membranes. for tens of millions of years. cryptocercus relictus has been developing in the conditions of entire geographical isolation, but the morphology of its blattabacterium is similar to that ... | 1980 | 7207253 |
| evolutionary relationships among primary endosymbionts of the mealybug subfamily phenacoccinae (hemiptera: coccoidea: pseudococcidae). | mealybugs (coccoidea: pseudococcidae) are sap-sucking plant parasites that harbor bacterial endosymbionts within specialized organs. previous studies have identified two subfamilies, pseudococcinae and phenacoccinae, within mealybugs and determined the primary endosymbionts (p-endosymbionts) of the pseudococcinae to be betaproteobacteria ("candidatus tremblaya princeps") containing gammaproteobacteria secondary symbionts. here, the p-endosymbionts of phenacoccine mealybugs are characterized base ... | 2010 | 20851962 |