Suspending life, controlling change: cryotechnology, genetic identity, and ecological separation

The collection and freezing of plant seeds in gene banks has been an integral part of global biodiversity policy since the early twentieth century. In recent years, the use of cryopreservation technologies (the storage of biological material at temperatures as low as −196 °C) has been advocated as a complement to these strategies. This technology promises that it will be possible to freeze significantly more plant varieties for longer periods of time. The article draws on scientific publications to analyze the current discourse on cryopreservation technology in the field of agricultural plant conservation. It underpins and intensifies biopolitical trajectories that have been inherent in ex situ conservation from the outset. First, cryotechnology submits to a pure line ontology which frames living beings as having an intrinsic genetic identity, and aims to secure this genetic identity against unplanned changes. Second, cryopreservation is linked to an imaginary of ecological separation that implies the idea that biodiversity can ultimately be preserved without a habitat. The article concludes by pointing to the material limitations and unsolved problems cryotechnologies inevitably face.