Lowering technical barriers in microbiology education using archaea: Halobacterium salinarum as a school laboratory model

Description

This 2026 article shows how schools can teach hands-on microbiology without a sterile laboratory, using Halobacterium salinarum, a salt-loving archaeon, a member of the third domain of life. The microbe is not known to cause disease.

The organism grows on media loaded with salt, up to 290 grams per liter, which keeps contaminants out. Ordinary school labs can therefore handle it with common consumer products. One activity has students grow colonies and note their pink color and violet glow under ultraviolet light. A second activity stains the cells with crystal violet for microscope viewing, revealing flexible rods that reflect the lack of a rigid cell wall. A short questionnaire and discussion of extremophiles, life forms that thrive in harsh settings, close the lesson.

Catalog record

Source: https://europepmc.org/article/MED/PMC13423301