Table 1. Absorption maxima of the carotenoids of Xanthomonas. (Modified from: Starr and Stephens [16]).
| Species1 | Color2 | Absorption maxima (mµ) of petroleum ether extracts3 | Absorption maxima (mµ) of benzene ether extracts3 | Absorption maxima (mµ) of methanol ether extracts3 |
| Xanthomonas campestris pv. badrii (Pammel 1895) Dowson 1939 | red orange |
(415) 433 459 (418) 437 465 |
(433) 451 479 (435) 454 481 |
(419) 438 (462) (462) 441 (468) |
| Xanthomonas axonopodis pv. begoniae (Takimoto 1934) Vauterin, Hoste, Kersters & Swings 1995 | red orange |
(418) 437 463 (418) 437 463 |
(435) 454 481 (435) 454 481 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas axonopodis pv. betlicola (Patel, Kulkarni & Dhande 1951) Vauterin, Hoste, Kersters & Swings 1995 | orange yellow |
(418) 437 463 (418) 437 463 |
(435) 454 481 (435) 454 481 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas hortorum pv. carotae (Kendrick 1934) Vauterin, Hoste, Kersters & Swings 1995 | red orange yellow |
(401) 420 445 (418) 437 463 (418) 437 463 |
(415) 436 460 (412) 431 457 (435) 454 481 |
(425) (445) --- (425) (443) --- (420) 441 (468) |
| Xanthomonas axonopodis pv. cassiae (Kulkarni, Patel & Dhande 1951) Vauterin, Hoste, Kersters & Swings 1995 | red orange |
(418) 437 463 (418) 437 463 |
(435) 454 481 (435) 454 481 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas campestris pv. corylina (Pammel 1895) Dowson 1939 | orange | (418) 454 481 | (435) 454 481 | (420) 441 (468) |
| Xanthomonas axonopodis pv. desmodiigangetici (Patel & Moniz 1948) Vauterin, Hoste, Kersters & Swings 1995 | red orange |
(418) 437 463 (418) 437 464 |
(435) 454 481 (435) 454 481 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas campestris4 (Pammel 1895) Dowson 1939 | red-orange orange-yellow |
(418) 437 463 (418) 437 463 |
(435) 454 481 (435) 454 481 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas vasicola pv. holcicola (Elliott 1930) Vauterin, Hoste, Kersters & Swings 1995 | red orange |
(418) 437 463 (418) 437 463 |
(435) 454 481 (435) 454 481 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas hyacinthi (Wakker 1883) Vauterin, Hoste, Kersters & Swings 1995 | orange | (418) 437 463 | (435) 454 481 | (420) 441 (468) |
| Xanthomonas arboricola pv. juglandis (Pierce 1901) Vauterin, Hoste, Kersters & Swings 1995 | red orange |
(418) 437 463 (418) 437 463 |
(435) 454 481 (435) 454 481 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas axonopodis pv. lespedezae (Ayers, Lefebvre & Johnson 1939) Vauterin, Hoste, Kersters & Swings 1995 | red orange |
(418) 437 463 (418) 437 463 |
(435) 454 481 (435) 454 481 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas axonopodis pv. manihotis (Bondar 1915) Vauterin, Hoste, Kersters & Swings 1995 | none | |||
| Xanthomonas oryzae pv. oryzae (Ishiyama 1922) Swings, Van den Mooter, Vauterin, Hoste, Gillis, Mew & Kersters 1990 | red-orange pale-orange |
(418) 437 463 (418) 437 463 |
(435) 437 463 (435) 437 463 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas hortorum pv. pelargonii (Brown 1923) Vauterin, Hoste, Kersters & Swings 1995 | red orange |
(401) 420 443 (418) 437 464 |
(415) 436 461 (435) 454 482 |
(426) (445) (420) 441 (468) |
| Xanthomonas axonopodis pv. phaseoli (Smith 1897) Vauterin, Hoste, Kersters & Swings 1995 | orange yellow |
(418) 437 463 (418) 437 463 |
(435) 454 483 (435) 454 481 |
(420) 441 (468) (420) 442 (468) |
| Xanthomonas hortorum pv. taraxaci (Niederhauser 1943) Vauterin, Hoste, Kersters & Swings 1995 | red orange |
(418) 437 463 (418) 437 463 |
(435) 454 483 (435) 454 483 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas axonopodis pv. vasculorum (Cobb 1894) Vauterin, Hoste, Kersters & Swings 1995 | orange pale-yellow |
(418) 437 463 (418) 437 465 |
(435) 454 483 (435) 454 483 |
(420) 441 (468) (420) 441 (468) |
| Xanthomonas vesicatoria (ex Doidge 1920) Vauterin, Hoste, Kersters & Swings 1995 | red orange |
(418) 437 463 (418) 437 463 |
(435) 454 483 (435) 454 483 |
(420) 441 (468) (420) 441 (468) |
1 Species names modified based on the International Society of Plant Pathology List or as indicated by the American Type Culture Collection
2 Color refers to Starr and Stephens determination of "zones" in order of appearance from top to bottom on magnesia-Celite columns (see Starr, M. P. and Stephens, W. L. 1964. Pigmentation and taxonomy of the genus Xanthomonas. J. Bacteriol. 87:293-302).
3 Parentheses around an absorption maximum indicate a shoulder or broad central peak centered around that approximate wavelength
4 Formerly listed by Starr and Stephens as Xanthomonas geranii.
5 Formerly listed by Starr and Stephens as Xanthomonas juglandis.