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Latest Rickettsiales Stories

2009-03-26 10:03:32

Certain bacteria have learned to manipulate the proportion of females and males in insect populations. Now Uppsala University researchers have mapped the entire genome of a bacterium that infects a close relative of the fruit fly. The findings, published in PNAS, reveal extremely high frequencies of gene exchange within this group of bacteria. In the future it is hoped that it will be possible to use sex-manipulating bacteria as environmentally friendly pesticides against harmful...

2008-07-04 15:00:41

By Jeremy Higgins, McAlester News-Capital, Okla. Jul. 4--Summertime means no school and lots of time for fun in the sun for most people. The summer months also bring out insects and other pests that could be hazardous to your health. One potentially deadly health concern during this time of year is Rocky Mountain spotted fever. According to the Department of Health and Human Services Centers for Disease Control and Prevention, "Rocky Mountain spotted fever is the most severe and...

2008-07-01 06:00:15

By Fallon, Ann M Abstract In vitro production of the obligate intracellular bacterium, Wolhachia pipientis, is essential to its manipulation as a genetic tool to spread transgenes within vector populations. We have adapted the Wolbachia-infected Aa23 Aedes albopictus mosquito cell line to Eagle's minimal medium, supplemented with nonessential amino acids, glutamine, and 20% fetal bovine serum. When plated at low densities, Aa23E cells grew as patchy monolayers, comprised of non-contiguous...

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2007-09-07 10:21:27

Bacterial to Animal Gene Transfers Now Shown to be Widespread, with Implications for Evolution and Control of Diseases and Pests Scientists at the University of Rochester and the J. Craig Venter Institute have discovered a copy of the genome of a bacterial parasite residing inside the genome of its host species. The research, reported in today's Science, also shows that lateral gene transfer"”the movement of genes between unrelated species"”may happen much more frequently between...


Latest Rickettsiales Reference Libraries

0_68051ac6f600313805ed284dd29cba8a
2011-04-28 17:50:48

Wolbachia is a genus of bacteria which infects arthropod species, including a high proportion of insects (~60% of species). It is one of the world's most common parasitic microbes and possibly the most common reproductive parasite in biosphere. Studies have suggested that 25-70% of all insect species are estimated to be potential hosts. Marshall Hertig and Burt Wolbach first identified the bacterium in 1924 in a species of mosquito. Hertig described the genus as Wolbachia pipientis. Not...

0_86d2284273d6244c9ff290b35cdd2cf2
2011-04-25 21:24:26

Rickettsia rickettsii is a gram-negative bacterium native to the New World and causes the malady known as Rocky Mountain spotted fever (RMSF). It is transmitted through the bit of an infected tick when it feeds on animals and humans. Humans are not necessary hosts in the rickettsia-tick life cycle but they can be. S. Burt Wolbach created the first detailed description of the etiologic agent in 1919. He recognized it as an intracellular bacterium seen most frequently in endothelial cells....

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Word of the Day
snash
  • To talk saucily.
  • Insolent, opprobrious language; impertinent abuse.
This word is Scots in origin and probably imitative.