Potato Evolution Unveiled: Ancient Hybridization with Tomato Ancestor Shaped Global Staple's Success

July 31, 2025
Potato Evolution Unveiled: Ancient Hybridization with Tomato Ancestor Shaped Global Staple's Success
  • Recent research has clarified the origins of potatoes, revealing they evolved from a tomato ancestor nearly 9 million years ago through hybridization with a plant called Etuberosum.

  • This hybridization event led to the formation of the potato lineage, which includes the cultivated potato, Solanum tuberosum, and 180 wild species.

  • The study highlights how new organs can emerge from hybridization, giving rise to new plant lineages, which is evident in the development of tubers that store nutrients.

  • Interestingly, while interspecies hybridization often results in sterile offspring, in this case, it produced a successful organism capable of thriving in diverse environments.

  • Potatoes adapted remarkably to high-altitude Andean habitats, leading to a vast diversity cultivated by Indigenous people, who developed hundreds of potato varieties.

  • Today, potatoes are recognized as the world's third most important staple crop, providing 80% of human caloric intake alongside maize, rice, and wheat.

  • Their versatility and low greenhouse gas emissions contribute to their status as a climate-friendly food, making them vital for sustainable agriculture.

  • Introduced to Europe in the 16th century, potatoes faced skepticism but eventually became a nutritional staple due to their adaptability.

  • The study, published in the journal Cell, emphasizes the importance of hybridization in evolutionary biology and its implications for agriculture.

  • While hybridization can yield negative genetic outcomes, it can also produce beneficial combinations, as seen with the 107 wild potato species that exist today.

  • This evolutionary process occurred long before the common ancestor of humans and chimpanzees existed, underscoring the deep historical roots of these plants.

  • The findings open avenues for developing more resilient crops with enhanced nutritional qualities, aiming to improve biodiversity and agricultural sustainability.

Summary based on 17 sources


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