{
  "id": 13109594,
  "title": "The green revolution may be turning purple",
  "url": "https://urgent.news/2026/10/09/the-green-revolution-may-be-turning-purple",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-09T12:00:20.000Z",
  "source": {
    "name": "Anthropocene Magazine",
    "slug": "anthropocene-magazine",
    "url": "https://www.anthropocenemagazine.org/2026/10/the-green-revolution-may-be-turning-purple/"
  },
  "original_language": "en",
  "account": "The current method of producing fertilizers, which involves heating them to 450°C (840°F) in large factories, releases an estimated 450 million metric tons of CO2 into the atmosphere annually. Scientists are exploring an alternative approach that could both boost agricultural productivity and reduce environmental harm. A study published in NPJ Sustainable Agriculture suggests that purple bacteria, commonly found in aquatic environments, could be cultivated in water-filled vats and used as a fertilizer. These bacteria, known as marine purple non-sulfur photosynthetic bacteria (Rhodovulum sulfidophilum), naturally absorb CO2 while growing, making them a potential source for biofuels as well. In laboratory experiments, lysed, dried, and powdered Rhodovulum sulfidophilum proved to be as effective as synthetic fertilizers in promoting the growth of Japanese mustard spinach. In 2025, researchers developed a cost-effective method for mass-producing Rhodovulum sulfidophilum in diluted seawater. A recent study tested the impact of Rhodovulum sulfidophilum fertilizer on broccoli fields over two years. The results showed that this \"purple-PB\" fertilizer enhanced broccoli yields just as effectively as synthetic fertilizers. Additionally, the nitrogen content in the plants increased similarly to synthetic fertilizers. Notably, Rhodovulum sulfidophilum fertilizer released nitrogen into the soil more slowly, reducing nitrous oxide (N2O) emissions—a potent greenhouse gas—by 15 to 73 percent in the first six days after application compared to synthetic fertilizers. The Green Revolution, which introduced synthetic fertilizers, enabled farmers to feed a growing global population. However, the environmental impacts of these fertilizers, such as soil acidification and eutrophication in water bodies, are becoming increasingly apparent. This emerging \"Purple Revolution\" could offer a more sustainable solution for agriculture, potentially reducing the carbon footprint and environmental degradation associated with current fertilizer production and application methods.",
  "summary": "The synthetic fertilizers behind the Green Revolution come at a steep climate cost. A sunlight-powered purple microbe just matched them in a 2-year field trial.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}