Scientists have genetically engineered plants so they grow up to 40 per cent larger by tweaking the process they use to turn sunlight into food. Photosynthesis allows plants to harvest the sun’s energy and produces vital oxygen as a by-product, fuelling the rich array of life on Earth. However, this mechanism is hampered by an energy intensive process called photorespiration, which plants have evolved to work around an inefficiency present in regular photosynthesis.
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