Abstract
This chapter discusses the genus, Pseudomonas that is a group of heterotrophic, gram-negative, rodlike bacteria, which do not form spores and possess, if motile, polar flagellation. They are known for their active oxidation of carbohydrates and breakdown of aromatic rings and their formation of poly-β-hydroxybutyric acid. A number of Pseudomonas strains are able to convert sugars into their bionic acids. Pseudomonas graveolus, converts maltose—maltobionic acid. Pseudomonas quercito-pyrogallica oxidizes lactose and maltose to lacto- and maltobionic acids, respectively. Some Pseudomonas species are also able to reduce glyoxylate to glycollate, which is catalyzed by glyoxylate reductase. The well-known inhibitor of succinate dehydrogenase, malonate, can be oxidized by several strains of Pseudomonas nearly to completion. Malonate is first oxidized to malonate semialdehyde by a malonate semialdehyde dehydrogenase. Malonic semialdehyde is also a hydration product of acetylene monocarboxylic acid in Pseudomonas fluorescens. The hydration is catalyzed by malonate semialdehyde dehydratase.
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