Agrobacterium tumefaciens strain S33

Agrobacterium tumefaciens strain S33 is a Gram-negative, rod-shaped bacterium that exhibits motility and possesses flagella. It is categorized as an aerobe, requiring oxygen for growth, and thrives optimally at a temperature of 25°C, fitting within a mesophilic temperature range. This strain has two replicons and two membranes, a characteristic typical of many Gram-negative bacteria. Strain S33 is free-living and has a wide range of hosts, primarily within the Viridiplantae kingdom. Notable hosts include Triticum aestivum (wheat), Solanum tuberosum (potato), Solanum lycopersicum (tomato), Oryza sativa (rice), Arabidopsis, and Glycine max (soybean), among others. This diverse host range highlights its ecological versatility and potential impacts on agricultural systems. A significant health effect associated with Agrobacterium tumefaciens strain S33 is its role in causing tumors in plants, specifically leading to crown gall disease. The bacterium induces crown gall tumors, resulting in the formation of abnormal growths in afflicted plants. These galls can negatively impact plant health and yield, making the understanding of this strain crucial for managing agricultural diseases. In summary, Agrobacterium tumefaciens strain S33 is an influential bacterium in plant pathology, particularly due to its ability to induce crown gall disease in a variety of economically important crops. This underscores the importance of monitoring and managing its presence in agricultural settings to mitigate adverse effects on plant health.