| http://www.w3.org/ns/prov#value | - The parasite cannot live without its plant and insect hosts, and its manipulation of the plant ensures its survival.Prof Hogenhout said the phenomenon had been very important in crops such as lettuce, carrots, potatoes and grapes in Europe, reducing farmers??? yields, and has been found in apple and pear trees in England.She added that it was moving north under the influence of climate change, as
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