| Genus | Species | Strains |
|---|---|---|
| Magnetospirillum | gryphiswaldense | 15271T |
| magnetotacticum | 15272T | |
| Malikia | spinosa | 103164T |
| Maricaulis | maris | 102484T 102483 |
| Marichromatium | fluminis | 105221T |
| Marihabitans | asiaticum | 103564T |
| Marinilabilia | salmonicolor | 15948T 14957 |
| Marinilactibacillus | psychrotolerans | 100002T 100003 100004 100005 100006 100007 100008 100009 |
| Marinobacter | hydrocarbonoclasticus | 103161 |
| koreensis | 106396T | |
| sp. | 101708 101709 101710 101711 101712 | |
| Marinobacterium | georgiense | 102606T 102196 |
| jannaschii | 15466T | |
| Marinococcus | halophilus | 102359T |
| halotolerans | 106070T | |
| Marinomonas | communis | 102224T |
| mediterranea | 103028T | |
| primoryensis | 103029T | |
| vaga | 103030T | |
| Marinoscillum | furvescens | 15994T |
| Marinospirillum | insulare | 100033T 100034 100035 100036 |
| minutulum | 15450T | |
| Marinovum | algicola | 16653T |
| Maritalea | porphyrae | 107169T 107170 107171 |
| Maritimibacter | alkaliphilus | 102057T |
| Marivirga | sericea | 15983T |
| Marmoricola | aurantiacus | 105375T |
| bigeumensis | 105376T | |
| Massilia | aerilata | 106432T |
| sp. | 108631 | |
| Mechercharimyces | asporophorigenens | 104192T |
| mesophilus | 104189T 104190 104191 | |
| Meiothermus | cerbereus | 106473T |
| chliarophilus | 106474T | |
| granaticius | 107808T | |
| hypogaeus | 106114T | |
| ruber | 106122T | |
| rufus | 107809T | |
| silvanus | 106475T | |
| taiwanensis | 105868T | |
| timidus | 103207T | |
| Melittangium | lichenicola | 100091 |
| Mesoflavibacter | zeaxanthinifaciens | 102119T |
| Mesonia | algae | 100447T |
| Mesoplasma | florum | 100688T |
| Mesorhizobium | albiziae | 107164T |
| amorphae | 102496T 108634 | |
| chacoense | 107136T | |
| ciceri | 100389T | |
| huakuii | 15243T 15244 | |
| loti | 14779T | |
| mediterraneum | 102497T | |
| metallidurans | 107165T | |
| plurifarium | 102498T | |
| tianshanense | 102499T | |
| sp. | 13336 14996 14997 14998 14999 15000 108629 | |
| Metalliresistens | boonkerdii | 106595T |
| Methylobacterium | aminovorans | 15686T 103123 |
| aquaticum | 106537 106538 107091 | |
| brachiatum | 103629T 103630 103631 | |
| extorquens | 15687T 3708 15911 103125 103126 103127 103129 | |
| fujisawaense | 15843T 15912 | |
| gnaphalii | 107716T | |
| gregans | 103626T 103633 | |
| komagatae | 103627T | |
| mesophilicum | 15688T | |
| organophilum | 15689T 103119 103120 103121 | |
| oxalidis | 107715T | |
| persicinum | 103628T | |
| radiotolerans | 15690T | |
| rhodesianum | 15844T | |
| rhodinum | 15691T | |
| tardum | 103632T | |
| thiocyanatum | 103122 103124 103128 103130 | |
| zatmanii | 15845T | |
| sp. | 108607 | |
| Methylomicrobium | japanense | 103677T |
| Methylomonas | koyamae | 105905T |
| Methylophaga | marina | 102421T |
| sulfidovorans | 102423T | |
| thalassica | 102424T | |
| Methylovulum | miyakonense | 106162T |
| Microbacterium | aerolatum | 103071T |
| aoyamense | 101280T | |
| arabinogalactanolyticum | 14344T | |
| arborescens | 3750T | |
| aurantiacum | 15234T 15235 | |
| aurum | 15204T | |
| awajiense | 103565T | |
| barkeri | 15036T | |
| chocolatum | 3758T | |
| deminutum | 101278T | |
| dextranolyticum | 14592T | |
| esteraromaticum | 3752 | |
| flavescens | 15039T | |
| flavum | 103923T | |
| fluvii | 105003T | |
| foliorum | 103072T 12124 | |
| gubbeenense | 103073T | |
| hominis | 15708T | |
| hydrocarbonoxydans | 103074T | |
| imperiale | 12610T | |
| keratanolyticum | 13309T | |
| ketosireducens | 14548T 14549 | |
| kitamiense | 16414T | |
| lacticum | 14135T 14138 | |
| lacus | 103566T | |
| laevaniformans | 14471T 15709 | |
| liquefaciens | 15037T 15226 15610 | |
| luteolum | 15074T | |
| marinilacus | 104188T | |
| maritypicum | 15779T | |
| oleivorans | 103075T | |
| oxydans | 15586T | |
| paraoxydans | 103076T | |
| phyllosphaerae | 103077T | |
| pumilum | 101279T | |
| pygmaeum | 101800T | |
| resistens | 103078T | |
| saperdae | 15038T | |
| schleiferi | 15075T | |
| suwonense | 106310T | |
| terrae | 15300T | |
| terregens | 12961T | |
| terricola | 101801T | |
| testaceum | 12675T 15227 15302 108610 | |
| thalassium | 16061 | |
| trichothecenolyticum | 15077T 15303 | |
| sp. | 16130 16150 | |
| Microbispora | amethystogenes | 101907T 14039 14040 |
| corallina | 16416T | |
| mesophila | 14179T | |
| rosea subsp. aerata | 14624T 14046 14047 | |
| rosea subsp. nonnitritogenes | 14045T | |
| rosea subsp. rosea | 14044T 12120 14041 14043 14875 14876 14879 101785 | |
| siamensis | 104113T | |
| thailandensis | 107569T | |
| sp. | 16548 16549 | |
| Microbulbifer | sp. | 101763 101764 101765 |
| Microcella | putealis | 106153T |
| Micrococcus | luteus | 3333T 3066 3067 12992 13867 16210 16250 |
| lylae | 15355T | |
| terreus | 104258T | |
| sp. | 107581 | |
| Microlunatus | phosphovorus | 101784T |
| Micromonospora | atratovinosa | 14618T |
| aurantiaca | 16155T | |
| auratinigra | 101913T | |
| brunnescens | 14024T | |
| carbonacea | 14108T 14107 | |
| chaiyaphumensis | 106529T | |
| chalcea | 13503T 12032 | |
| chalcea subsp. izumensis | 12988T | |
| chersina | 15963T | |
| chokoriensis | 106572T | |
| citrea | 14025T | |
| coerulea | 13504T | |
| coriariae | 106140T | |
| coxensis | 106574T | |
| eburnea | 101912T | |
| echinaurantiaca | 14022T | |
| echinofusca | 14267T | |
| echinospora | 13149T 13150 14109 14863 | |
| endolithica | 101889T | |
| fulviviridis | 14026T | |
| fulvoviolacea | 14023T | |
| grisea | 14111T | |
| halophytica | 14112T | |
| inositola | 101909T | |
| inyonensis | 13156T | |
| lupini | 106141T | |
| matsumotoense | 14550T | |
| megalomicea subsp. megalomicea | 14743 | |
| megalomicea subsp. nigra | 14744 | |
| melanosporea | 12515 | |
| mirobrigensis | 101890T | |
| narashino | 14656 | |
| nigra | 16103T | |
| olivasterospora | 14304T | |
| pallida | 16070T | |
| pallidocoerulea | 14619T | |
| peucetia | 101886T | |
| purpureochromogenes | 13324T 14069 | |
| rosaria | 13697T | |
| saelicesensis | 106573T | |
| sagamiensis | 101888T | |
| siamensis | 101914T | |
| thermoauberginospora | 14354T | |
| violacea | 14617T | |
| viridifaciens | 101887T | |
| yangpuensis | 107727T | |
| yulongensis | 14461T | |
| zionensis | 14116T | |
| sp. | 12396 14268 101298 101299 101691 101734 101794 101795 101796 101797 107092 107093 107094 107095 107096 107097 107098 107099 | |
| Micropruina | glycogenica | 105859T |
| Microscilla | marina | 16560T |
| sericea | 16561 | |
| Microterricola | viridarii | 102123T |
| Microtetraspora | cyaneoviridis | 14339T |
| fusca | 13915T | |
| glauca | 14761T | |
| incanescens | 14027T | |
| malaysiensis | 100735T | |
| niveoalba | 15239T | |
| sp. | 13810 16547 | |
| Microvirga | aerilata | 106137T |
| aerophila | 106136T | |
| Microvirgula | aerodenitrificans | 15328 |
| Millisia | brevis | 105863T |
| Miniimonas | arenae | 106267T |
| Mitsuaria | chitosanitabida | 102408T |
| Mobilicoccus | pelagius | 104925T |
| Moraxella | atlantae | 14588T |
| lacunata | 102154T | |
| oblonga | 102422T | |
| Morganella | morganii subsp. morganii | 3848T 105691T 3168 |
| Mucilaginibacter | kameinonensis | 102645T |
| oryzae | 106410T | |
| polysacchareus | 107757T | |
| rigui | 101115T | |
| Muricauda | sp. | 101325 |
| Myceligenerans | xiligouense | 106321T |
| Mycetocola | lacteus | 16278T 16279 16280 16281 16282 16283 |
| saprophilus | 16275 | |
| Mycobacterium | chlorophenolicum | 15527T |
| diernhoferi | 3707 14797 14798 | |
| fortuitum subsp. fortuitum | 13159T | |
| phlei | 3158 13160 103068 109115 | |
| smegmatis | 3082 3153 3154 3207 3375 13167 | |
| vaccae | 14118T | |
| sp. | 3142 16251 16252 102188 102189 102190 102191 | |
| Mycoplana | dimorpha | 13291T |
| ramosa | 15249T | |
| sp. | 106662 106663 | |
| Mycoplasma | anatis | 14861T |
| arthritidis | 14860T | |
| bovigenitalium | 14862T | |
| bovirhinis | 14857T | |
| buccale | 14851T | |
| canis | 14846T | |
| fermentans | 14854T | |
| gallinarum | 14859T | |
| gallisepticum | 14855T | |
| hominis | 14850T | |
| hyorhinis | 14858T | |
| iners | 14853T | |
| lipophilum | 14895T | |
| maculosum | 14848T | |
| meleagridis | 14852T | |
| neurolyticum | 14799T 14800 | |
| orale | 14477T | |
| pneumoniae | 14401T | |
| pulmonis | 14896T | |
| salivarium | 14478T | |
| spumans | 14849T | |
| Myroides | odoratus | 14945T |
| pelagicus | 102469T | |
| Myxococcus | flavescens | 100081T 100077 100078 100079 100080 100506 |
| fulvus | 100333T 100067 100070 100071 100072 100073 100074 100075 100507 100508 100509 100510 100511 100512 100513 | |
| stipitatus | 100068 100069 | |
| virescens | 100334T | |
| xanthus | 13542T |