SINCE 1828
Xanthomonas
noun
Xan·thom·o·nas
| \ -nəs, -ˌnas\
Definition of Xanthomonas
: a large genus of bacteria (family Pseudomonadaceae) that are distinguished from members of the closely related Pseudomonas by production of yellow pigments insoluble in water and that include numerous plant pathogens some of which cause necrotic conditions
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