Watch this cucumber squirt out its seeds at ballistic speeds

While the worlds of botany and ballistics may seem worlds apart, the squirting cucumber offers a fascinating intersection. Known scientifically as Ecballium elaterium, this plant has earned its name due to its unique ability to launch its seeds at astonishing speeds. Recent research conducted by graduate student Helen Gorges from Kiel University sheds light on the intricate biomechanics behind this extraordinary method of seed dispersal. Presented at the Society for Experimental Biology Annual Conference in Antwerp, Belgium, Gorges's findings reveal how the squirting cucumber, often dismissed as a mere weed, employs a remarkable strategy to ensure its seeds reach new territories. This plant, also referred to as the "noli me tangere" or "touch me not," is sometimes regarded as an ornamental species in certain areas. Interestingly, the fruit extract possesses potent laxative properties and can be toxic if inhaled or ingested, leading to serious health complications. When the fruit ripens, it builds up internal pressure due to the accumulation of glucosides within its sap. As the pressure mounts, the fruit detaches from its stalk, resulting in a rapid expulsion of a mucus-like liquid containing seed pods. This phenomenon is an example of rapid plant movement, where the pericarp contracts, forcing both the fruit and seeds out through a small opening. The process is further enhanced by hygroscopic movement, where the fruit's structural changes occur as it dehydrates, causing its cells to bend, coil, or twist. However, a 2019 study indicated that this method isn't the most efficient for seed dispersal, which might provide relief for farmers managing almond orchards, allowing them to focus their weed control efforts more effectively. Gorges emphasizes that the interaction of multiple factors is crucial for successful seed dispersal without compromising the integrity of the plant. Her research aims to deepen the understanding of the biomechanics that govern this incredible natural phenomenon.