Alcaligenes spp.
Enteric bacteria are related phenotypically (sharing observable physical or biochemical characteristics) to several other genera of bacteria, such as Pseudomonas and Alcaligenes . But they are physiologically (the normal functioning of the bacteria) quite unrelated. Generally, a distinction can be made on the ability to ferment glucose; enteric bacteria all ferment glucose to acid end products while similar Gram-negative bacteria cannot ferment glucose. Pseudomonas spp.
Enteric bacteria are related phenotypically (sharing observable physical or biochemical characteristics) to several other genera of bacteria, such as Pseudomonas and Alcaligenes . But they are physiologically (the normal functioning of the bacteria) quite unrelated. Generally, a distinction can be made on the ability to ferment glucose; enteric bacteria all ferment glucose to acid end products while similar Gram-negative bacteria cannot ferment glucose. Yersinia pseudotuberculosis
Yersinia pseudotuberculosis is a prototroph and a relatively mild gastrointestinal pathogen, compared to Y. pestis which is an auxotroph that causes lethal bubonic plague. However although their ecology is very different these species are very closely related (Sun et al. 2009). Achtman et al. (1999) analyzed 6 genes from each of 36 plague strains, and determined that Y. pestis is a recently evolved clone of Y. pseudotuberculosis, appearing as recently as 1500 to 20,000 years ago (Gage and Kosoy 2005). |
