Name: Xanthomonas citri subsp. malvacearum (ex Smith 1901) Schaad et al. 2007

Category: Subspecies

Proposed as: subsp. nov., nom. rev.

Etymology: mal.va.ce.a’rum. N.L. gen. fem. pl. n. malvacearum, of Malvaceae (of malvaceous plants of the family Malvaceae)

Pronunciation (Latin), gender: … mal-wa-ke-A-rum, feminine

Type strain: ATCC 9924; DSM 3849; ICMP 217; ICPB 10528; LMG 785

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: FR749944 Analyse FASTA

Effective publication: Schaad NW, Postnikova E, Lacy G, Sechler A, Agarkova I, Stromberg PE, Stromberg VK, Vidaver AK. Emended classification of xanthomonad pathogens on citrus. Syst Appl Microbiol 2006; 29:690-695. 🇺🇸

IJSEM list: Euzeby JP. Validation list no. 115. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2007; 57:893-897.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Notes:
  • 😷 The risk group for Belgium has been imported on 2024-02-01. The full classification is: risk group = 1, note = "plant pathogen - biological class of risk plant: 2". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "p". — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this subspecies. The name is on LoRN because of the recorded risk group of other species in the genus.
  • 🧍 According to Schaad et al. 2006, the type strain ICPB 10528 (= ATCC 9924 = ICMP 217 = LMG 785), although identical in pathogenicity, is different from strain ICMP 5739 = LMG 761 = NCPPB 633, indicated as the type strain for Xanthomonas campestris pv. malvacearum (Xanthomonas axonopodis pv. malvacearum). Publication: Schaad NW, Postnikova E, Lacy G, Sechler A, Agarkova I, Stromberg PE, Stromberg VK, Vidaver AK. Emended classification of xanthomonad pathogens on citrus. Syst Appl Microbiol 2006; 29:690-695. 🇺🇸
  • 🧍 Xanthomonas citri subsp. malvacearum (ex Smith 1901) Schaad et al. 2007, subsp. nov., nom. rev. was previously known as "Xanthomonas smithii" Schaad et al., sp. nov. Publication: Schaad NW, Postnikova E, Lacy GH, Sechler A, Agarkova I, Stromberg PE, Stromberg VK, Vidaver AK. Reclassification of Xanthomonas campestris pv. citri (ex Hasse 1915) Dye 1978 forms A, B/C/D, and E as X. smithii subsp. citri (ex Hasse) sp. nov. nom. rev. comb. nov., X. fuscans subsp. aurantifolii (ex Gabriel 1989) sp. nov. nom. rev. comb. nov., and X. alfalfae subsp. citrumelo (ex Riker and Jones) Gabriel et al., 1989 sp. nov. nom. rev. comb. nov.; X. campestris pv malvacearum (ex smith 1901) Dye 1978 as X. smithii subsp. smithii nov. comb. nov. nom. nov.; X. campestris pv. alfalfae (ex Riker and Jones, 1935) dye 1978 as X. alfalfae subsp. alfalfae (ex Riker et al., 1935) sp. nov. nom. rev.; and "var. fuscans" of X. campestris pv. phaseoli (ex Smith, 1987) Dye 1978 as X. fuscans subsp. fuscans sp. nov. Syst Appl Microbiol 2005; 28:494-518. 🇺🇸
  • 🧍 Schaad et al. 2007 designated LMG 785 as the type strain of the subspecies Xanthomonas citri subsp. malvacearum. However, strain LMG 785 is a pathovar reference strain of "Xanthomonas campestris pv. musacearum" (Yirgou and Bradbury 1968) Dye 1978. See BCCM/LMG bacteria catalogue. Publication: Dowson WJ. On the systematic position and generic names of the Gram negative bacterial plant pathogens. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene, Abteilung II 1939; 100:177-193.

Parent taxon: Xanthomonas citri (ex Hasse 1915) Gabriel et al. 1989

Assigned by: Schaad NW, Postnikova E, Lacy G, Sechler A, Agarkova I, Stromberg PE, Stromberg VK, Vidaver AK. Emended classification of xanthomonad pathogens on citrus. Syst Appl Microbiol 2006; 29:690-695. 🇺🇸

Linking: To permanently link to this page, use https://lpsn.dsmz.de/subspecies/xanthomonas-citri-malvacearumCopy to clipboardLink copied to clipboard

Record number: 786241