Abstract
Soil samples collected at several times during the growing season and at different locations within Convallaria majalis beds in Ann Arbor, MI, were screened for their ability to grow with the cyclic amino acid, l-azetidine-2-carboxylic acid (l-A-2-C), as their sole nitrogen source (i.e., metabolize l-A-2-C). Two different soil microorganisms were isolated, characterized, and identified using fundamental selection methods, the standard battery of biochemical characterization tests, and scanning electron microscopy. The assignment of the identity of these organisms as Enterobacter agglomerans and Enterobacter amnigenus was further verified by comparison with authentic microbial samples obtained from ATCC that were able to utilize l-A-2-C as their sole nitrogen source.
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