Synthetic biology

A few months ago, Living Carbon, a US start-up, announced that it had developed and planted genetically modified poplar trees in 2023. These trees are said to absorb more quickly carbon dioxide, one of the greenhouse gases whose current accumulation in the atmosphere and oceans is causing problems for the Earth’s climate. As part of this program, Living Carbon is acquiring carbon credits to finance its work. The aim is to reduce the photorespiration of poplar and pine plants. What is photorespiration? What would be the ecological repercussions of this modification of photosynthesis?

For the past fifteen years, governments have been discussing “synthetic biology” on an international level. If to date, an “operational” definition exists, the outlines of this field remain hard to draw. Are talks of “synthetic biology” simply a change of semantics, or a genuinely new frontier of the biotechnology field? For the moment, examples of organisms or molecules obtained by synthetic biology are accumulating: unnatural proteins, GMO plants, GMO bacteria, recreated viruses, modification of living organisms directly in the environment, GMO insects, xenobacteria…