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Broader Terms:
   Alpha proteobacteria 
   Alphaproteobacteria 
   Inside 
   Microtatobiotes 
   Rickettsiales 

More Specific:
   Anaplasmataceae 
   Caedibacter 
   Candidatus 
   Ehrlichiaceae 
   Holosporaceae 
   Rhodocyclus gelatinosus 
   Rhodocyclus purpureus 
   Rhodocyclus tenuis 
   Rickettsiaceae 
   Rickettsiales 
   Rickettsiales bacterium 
   SAR cluster 
   Unassigned 
   environmental samples 
   unclassified 
 
 
Latest Articles on Rickettsiales from uBioRSS


External Resources:

Common Names: rickettsias



1.  'Candidatus Gromoviella agglomerans', a novel intracellular Holosporaceae parasite of the ciliate Paramecium showing marked genome reduction.LinkIT
Castelli M, Lanzoni O, Giovannini M, Lebedeva N, Gammuto L, Sassera D, Melekhin M, Potekhin A, Fokin S, Petroni G
Environmental microbiology reportsEnviron Microbiol Rep'Candidatus Gromoviella agglomerans', a novel intracellular Holosporaceae parasite of the ciliate Paramecium showing marked genome reduction.10.1111/1758-2229.13021Holosporales are an alphaproteobacterial lineage encompassing bacteria obligatorily associated with multiple diverse eukaryotes. For most representatives, little is known on the interactions with their hosts. In this study, we characterized a novel Holosporales symbiont of the ciliate Paramecium polycaryum. This bacterium inhabits the host cytoplasm, frequently forming quite large aggregates. Possibly due to such aggregates, host cells sometimes displayed lethal division defects. The symbiont was also able to experimentally stably infect another Paramecium polycaryum strain. The bacterium is phylogenetically related with symbionts of other ciliates and diplonemids, forming a putatively fast-evolving clade within the family Holosporaceae. Similarly to many close relatives, it presents a very small genome (<600?kbp), and, accordingly, a limited predicted metabolism, implying a heavy dependence on Paramecium, thanks also to some specialized membrane transporters. Characterized features, including the presence of specific secretion systems, are overall suggestive of a mild parasitic effect on the host. From an evolutionary perspective, a potential ancestral trend towards pronounced genome reduction and possibly linked to parasitism could be inferred, at least among fast-evolving Holosporaceae, with some lineage-specific traits. Interestingly, similar convergent features could be observed in other host-associated lineages, in particular Rickettsiales among Alphaproteobacteria.© 2021 Society for Applied Microbiology and John Wiley & Sons Ltd.CastelliMicheleMhttps://orcid.org/0000-0003-2177-5772Dipartimento di Biologia e Biotecnologie, Università degli studi di Pavia, Pavia, Italy.LanzoniOliviaODipartimento di Biologia, Università di Pisa, Pisa, Italy.Department of Food Hygiene and Environmental Health, University of Helsinki, Helsinki, Finland.GiovanniniMicheleMDipartimento di Biologia, Università di Pisa, Pisa, Italy.LebedevaNataliaNCentre of Core Facilities "Culture Collections of Microorganisms", Saint Petersburg State University, Saint Petersburg, Russia.GammutoLeandroLDipartimento di Biologia, Università di Pisa, Pisa, Italy.SasseraDavideDhttps://orcid.org/0000-0003-0442-5252Dipartimento di Biologia e Biotecnologie, Università degli studi di Pavia, Pavia, Italy.MelekhinMaksimMhttps://orcid.org/0000-0002-4599-5836Department of Microbiology, Faculty of Biology, Saint Petersburg State University, Saint Petersburg, Russia.Laboratory of Cellular and Molecular Protistology, Zoological Institute RAS, Saint Petersburg, Russia.PotekhinAlexeyADepartment of Microbiology, Faculty of Biology, Saint Petersburg State University, Saint Petersburg, Russia.Laboratory of Cellular and Molecular Protistology, Zoological Institute RAS, Saint Petersburg, Russia.FokinSergeiSDipartimento di Biologia, Università di Pisa, Pisa, Italy.Department of Invertebrate Zoology, Saint Petersburg State University, Saint Petersburg, Russia.PetroniGiulioGhttps://orcid.org/0000-0001-9572-9897Dipartimento di Biologia, Università di Pisa, Pisa, Italy.eng20-14-00220Russian Science Foundation872767European CommissionPRA_2018_63the University of PisaJournal Article20211112United StatesEnviron Microbiol Rep1014992071758-2229IM20210428202109142021111273020211113602021111360aheadofprint3476644310.1111/1758-2229.13021References, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>2.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Population Dynamics of Wolbachia in the Leafhopper Vector Yamatotettix flavovittatus (Hemiptera: Cicadellidae).</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Wangkeeree J, Sanit P, Roddee J, Hanboonsong Y<br><font color=gray><i>Journal of insect science (Online), 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>3.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Characterization of "<i>Candidatus</i> Ehrlichia Pampeana" in <i>Haemaphysalis juxtakochi</i> Ticks and Gray Brocket Deer (<i>Mazama gouazoubira</i>) from Uruguay.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Félix ML, Muñoz-Leal S, Carvalho LA, Queirolo D, Remesar S, Armúa-Fernández MT, Venzal JM<br><font color=gray><i>Microorganisms, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>4.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>gltA typing of Anaplasma strains related to A. platys: Taxonomical and one health implications.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Zobba R, Schianchi E, Ben Said M, Belkahia H, Messadi L, Piredda R, Pittau M, Alberti A<br><font color=gray><i>Ticks and tick-borne diseases, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>5.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Mediterranean Spotted Fever: Current Knowledge and Recent Advances.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Spernovasilis N, Markaki I, Papadakis M, Mazonakis N, Ierodiakonou D<br><font color=gray><i>Tropical medicine and infectious disease, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>6.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Analysis of Orientia tsutsugamushi promoter activity.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Hunt JR, Carlyon JA<br><font color=gray><i>Pathogens and disease, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>7.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Ticks and their epidemiological role in Slovakia: from the past till present.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Stanko M, Derdáková M, ?pitalská E, Kazimírová M<br><font color=gray><i>Biologia, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>8.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Colonization and Development of the Fecal Microflora of South China Tiger Cubs (Panthera tigris amoyensis) by Sequencing of the 16S rRNA Gene.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Sun Y, Yao J, Zhang M, Chen T, Xu W, Fu W, Wu Q, Li Y, Chen X, Zhu Y, Zhang X, Liu L, Chen D, Wang Z, You Z, Zhang X, Liu Y, Lin K, Lin W<br><font color=gray><i>Microbial physiology, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>9.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>A severe case of Israeli spotted fever with pleural effusion in Italy.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Guccione C, Colomba C, Rubino R, Bonura C, Anastasia A, Agrenzano S, Caputo V, Giammanco GM, Cascio A<br><font color=gray><i>Infection, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>10.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Potential co-infection of <i>Wolbachia</i> with <i>Leishmania</i> among sand fly vectors caught from endemic leishmaniasis foci in Fars province, southern Iran.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Alipour H, Izadpanah L, Azizi K, Shahriari-Namadi M, Kalantari M<br><font color=gray><i>Journal of parasitic diseases : official organ of the Indian Society for Parasitology, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br><br><br><table cellspacing=0 cellpadding=0 align=center><tr valign=bottom><td align=center><img src=p.png border=0></td><td align=center><img src=o_red.png border=0></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=2><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=3><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=4><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=5><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=6><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=7><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=8><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=9><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=10><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=2><img src=rtal.png border=0></a></td></tr><td align=center></td><td align=center>1</td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=2>2</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=3>3</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=4>4</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=5>5</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=6>6</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=7>7</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=8>8</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=9>9</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=10>10</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Rickettsiales&category=l&client=pubmed&startPage=2>»</a></td></tr></table></table></tr></table></td><script src="http://www.google-analytics.com/urchin.js" type="text/javascript"> </script> <script type="text/javascript"> _uacct = "UA-634822-1"; urchinTracker(); </script> </BODY> </HTML>