article_snippet.sent: Scientists in Belgium say all sweet potatoes (stock image shown) contain 'foreign DNA'.
article_snippet.sent: new research was conducted by scientists from Ghent University in Belgium and the International Potato Institute (CIP).
article_snippet.sent: Sweet potato is one of the most important food crops for human consumption, especially in Sub-Sahara Africa, parts of Asia and the Pacific islands.
article_snippet.sent: Despite the name, sweet potato is not related to potato; we eat the tuber from potato, while from sweet potato mainly the storage root is eaten.
article_snippet.sent: Other sweet potato parts are edible, such as the leaves.
article_snippet.sent: In total the researchers studied 291 samples of sweet potato from the Americas, Africa, Asia and Oceania, and found evidence of Agrobacterium in all of the researchers.
article_snippet.sent: Sweet potato (shown) is one of the most important food crops for human consumption, especially in Sub-Sahara Africa, parts of Asia and the Pacific islands. 
article_snippet.sent: The research suggests that the bacterial DNA may have adapted sweet potato for thousands of years in the natural process.
highlights_snippet.sent: Scientists in Belgium say all sweet potatoes contain 'foreign DNA'
  Agrobacterium bacteria in the crop exchanges genes between species .
  