Arthrobacter viscosus Gasdorf et al. 1965 (Approved Lists 1980) Arthrobacter viscosus Gasdorf et al. 1965 (Approved Lists 1980) Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Actinobacteria (sic) Goodfellow 2021 non Actinobacteria Stackebrandt et al. 1997 Actinomycetota corrig. Goodfellow 2021 Actinobacteriota corrig. Goodfellow 2021 Actinomycetes Krasil'nikov 1949 (Approved Lists 1980) Actinomycetales Buchanan 1917 (Approved Lists 1980) emend. Salam et al. 2020 Micrococcineae Stackebrandt et al. 1997 emend. Yassin et al. 2011 Micrococcaceae Pribram 1929 (Approved Lists 1980) emend. Zhi et al. 2009 Arthrobacter Conn and Dimmick 1947 (Approved Lists 1980) emend. Kämpfer et al. 2020 Arthrobacter viscosus Gasdorf et al. 1965 (Approved Lists 1980) Arthrobacter Conn and Dimmick 1947 (Approved Lists 1980) emend. Kämpfer et al. 2020 Arthrobacter aurescens Phillips 1953 (Approved Lists 1980) Arthrobacter tumbae Heyrman et al. 2005 Arthrobacter histidinolovorans Adams 1954 (Approved Lists 1980) Arthrobacter uratoxydans Stackebrandt et al. 1984 Arthrobacter nasiphocae Collins et al. 2002 Arthrobacter chlorophenolicus Westerberg et al. 2000 Arthrobacter roseus Reddy et al. 2002 emend. Busse 2016 Arthrobacter nicotinovorans Kodama et al. 1992 Arthrobacter duodecadis Lochhead 1958 (Approved Lists 1980) Arthrobacter rhombi Osorio et al. 1999 Arthrobacter methylotrophus Borodina et al. 2002 Arthrobacter citreus Sacks 1954 (Approved Lists 1980) Arthrobacter soli Roh et al. 2008 Arthrobacter alkaliphilus Ding et al. 2009 Arthrobacter echigonensis Ding et al. 2009 Arthrobacter livingstonensis Ganzert et al. 2011 Arthrobacter pityocampae İnce et al. 2014 Arthrobacter nanjingensis Huang et al. 2015 Arthrobacter agilis (Ali-Cohen 1889) Koch et al. 1995 Arthrobacter pigmenti Heyrman et al. 2005 Arthrobacter creatinolyticus Hou et al. 1998 Arthrobacter bergerei Irlinger et al. 2005 Arthrobacter ardleyensis Chen et al. 2005 Arthrobacter variabilis Müller 1961 (Approved Lists 1980) Arthrobacter cumminsii Funke et al. 1997 emend. Funke et al. 1998 Arthrobacter gandavensis Storms et al. 2003 Arthrobacter tecti Heyrman et al. 2005 Arthrobacter flavescens Lochhead 1958 (Approved Lists 1980) Arthrobacter scleromae Huang et al. 2005 Arthrobacter stackebrandtii Tvrzová et al. 2005 Arthrobacter crystallopoietes Ensign and Rittenberg 1963 (Approved Lists 1980) emend. Nouioui et al. 2018 Arthrobacter tumescens (Jensen 1934) Conn and Dimmick 1947 (Approved Lists 1980) Arthrobacter polychromogenes Schippers-Lammertse et al. 1963 (Approved Lists 1980) Arthrobacter picolinophilus Tate and Ensign 1974 (Approved Lists 1980) Arthrobacter parietis Heyrman et al. 2005 Arthrobacter psychrolactophilus Loveland-Curtze et al. 2000 Arthrobacter defluvii Kim et al. 2008 Arthrobacter humicola Kageyama et al. 2008 Arthrobacter oryzae Kageyama et al. 2008 Arthrobacter sanguinis Mages et al. 2009 Arthrobacter subterraneus Chang et al. 2008 Arthrobacter niigatensis Ding et al. 2009 Arthrobacter albidus Ding et al. 2009 Arthrobacter halodurans Chen et al. 2012 Arthrobacter siccitolerans SantaCruz-Calvo et al. 2013 Arthrobacter liuii Yu et al. 2015 Arthrobacter endophyticus Wang et al. 2015 Arthrobacter arilaitensis Irlinger et al. 2005 Arthrobacter psychrophenolicus Margesin et al. 2004 Arthrobacter simplex (Jensen 1934) Lochhead 1957 (Approved Lists 1980) Arthrobacter monumenti Heyrman et al. 2005 Arthrobacter kerguelensis Gupta et al. 2004 Arthrobacter pascens Lochhead and Burton 1953 (Approved Lists 1980) Arthrobacter ramosus Jensen 1960 (Approved Lists 1980) Arthrobacter protophormiae (Lysenko 1959) Stackebrandt et al. 1984 Arthrobacter flavus Reddy et al. 2000 Arthrobacter nitroguajacolicus Kotoučková et al. 2004 Arthrobacter russicus Li et al. 2004 Arthrobacter koreensis Lee et al. 2003 Arthrobacter mysorens Nand and Rao 1972 (Approved Lists 1980) Arthrobacter gangotriensis Gupta et al. 2004 Arthrobacter sulfureus Stackebrandt et al. 1984 Arthrobacter nicotianae Giovannozzi-Sermanni 1959 (Approved Lists 1980) Arthrobacter psychrochitiniphilus Wang et al. 2009 Arthrobacter sp. None 2015 Arthrobacter cryotolerans Ganzert et al. 2011 Arthrobacter cupressi Zhang et al. 2012 emend. Nouioui et al. 2018 Arthrobacter gyeryongensis Hoang et al. 2014 Arthrobacter albus Wauters et al. 2000 Arthrobacter castelli Heyrman et al. 2005 emend. Nouioui et al. 2018 Arthrobacter woluwensis Funke et al. 1997 Arthrobacter sulfonivorans Borodina et al. 2002 Arthrobacter oxydans Sguros 1954 (Approved Lists 1980) Arthrobacter atrocyaneus Kuhn and Starr 1960 (Approved Lists 1980) Arthrobacter luteolus Wauters et al. 2000 Arthrobacter radiotolerans Yoshinaka et al. 1973 (Approved Lists 1980) Arthrobacter siderocapsulatus Dubinina and Zhdanov 1975 (Approved Lists 1980) Arthrobacter terregens Lochhead and Burton 1953 (Approved Lists 1980) Arthrobacter ureafaciens (Krebs and Eggleston 1939) Clark 1955 (Approved Lists 1980) Arthrobacter ilicis (Mandel et al. 1961) Collins et al. 1982 Arthrobacter echini Lee et al. 2016 Arthrobacter deserti Hu et al. 2016 emend. Ye et al. 2020 Arthrobacter globiformis (Conn 1928) Conn and Dimmick 1947 (Approved Lists 1980) emend. Nouioui et al. 2018 Arthrobacter phenanthrenivorans Kallimanis et al. 2009 Arthrobacter alpinus Zhang et al. 2010 emend. Nouioui et al. 2018 Arthrobacter antarcticus Pindi et al. 2010 Arthrobacter equi Yassin et al. 2011 Arthrobacter ginkgonis Cheng et al. 2017 Arthrobacter cryoconiti Margesin et al. 2012 Glutamicibacter halophytocola Feng et al. 2017 Arthrobacter pokkalii Krishnan et al. 2017 Arthrobacter bambusae Park et al. 2014 Arthrobacter enclensis Dastager et al. 2015 emend. Nouioui et al. 2018 Arthrobacter ginsengisoli Siddiqi et al. 2014 Arthrobacter silviterrae Lee et al. 2017 Arthrobacter paludis Zhang et al. 2018 Arthrobacter ruber Liu et al. 2018 Arthrobacter silvisoli Yan et al. 2018 Arthrobacter glacialis Liu et al. 2019 Arthrobacter celericrescens Yan et al. 2019 Arthrobacter ulcerisalmonis Kämpfer et al. 2020 Arthrobacter bussei Flegler et al. 2020 Arthrobacter yangruifuii Ge et al. 2020 Arthrobacter zhaoguopingii Ge et al. 2020 Arthrobacter mobilis Ye et al. 2020 Arthrobacter terricola Trinh and Kim 2021 Arthrobacter cheniae Yang et al. 2021 Arthrobacter frigidicola Yang et al. 2021 Arthrobacter sunyaminii Zhang et al. 2022 Arthrobacter jiangjiafuii Zhang et al. 2022 Arthrobacter cavernae Fang et al. 2022 Rhizobium viscosum (Gasdorf et al. 1965) Flores-Félix et al. 2017 Arthrobacter viscosus Gasdorf et al. 1965 (Approved Lists 1980) Heyrman J. Verbeeren J. Schumann P. Swings J. De Vos P. Six novel Arthrobacter species isolated from deteriorated mural paintings. 2005 55 4 1457 1464 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.63358-0 16014466 A. viscosus, for which no 16S rRNA gene sequence was previously available, is most closely related to members of the genus Rhizobium, e.g. Rhizobium gallicum (98·1 % 16S rRNA gene sequence similarity), Rhizobium mongolense (98·0 %) and Rhizobium leguminosarum (97·6 %). This is not unexpected, as Keddie et al. (1986) stated that the chemotaxonomic data for this species were in accordance with the view that it is indeed a Gram-negative rod. From rid3876 Gasdorf H.J. Benedict R.G. Cadmus M.C. Anderson R.F. Jackson R.W. Polymer-Producing Species of Arthrobacter 1965 90 147 150 Journal of Bacteriology J Bacteriol 0021-9193 1098-5530 16562010 Rhizobium viscosum (Gasdorf et al. 1965) Flores-Félix et al. 2017 Flores-Félix J.D. Ramírez-Bahena M.H. Salazar S. Peix A. Velázquez E. Reclassification of Arthrobacter viscosus as Rhizobium viscosum comb. nov 2017 67 6 1789 1792 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.001864 28598309 Gasdorf H.J. Benedict R.G. Cadmus M.C. Anderson R.F. Jackson R.W. Polymer-Producing Species of Arthrobacter 1965 90 147 150 Journal of Bacteriology J Bacteriol 0021-9193 1098-5530 16562010 Skerman V.B.D. McGowan V. Sneath P.H.A. Approved Lists of Bacterial Names 1980 30 1 225 420 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-30-1-225 A. viscosus, for which no 16S rRNA gene sequence was previously available, is most closely related to members of the genus Rhizobium, e.g. Rhizobium gallicum (98·1 % 16S rRNA gene sequence similarity), Rhizobium mongolense (98·0 %) and Rhizobium leguminosarum (97·6 %). This is not unexpected, as Keddie et al. (1986) stated that the chemotaxonomic data for this species were in accordance with the view that it is indeed a Gram-negative rod. From rid3876