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- Leafcutter Ant Genome Reveals Secrets of Fungus Farming Ways. Feb.
- 18, 2011 — Leafcutter ants, signature denizens of New World tropical forests, are unique in their ability to harvest fresh leaves to cultivate a nutrient-rich fungus as food.
- Now, this mutualism -- a complicated interplay of ants, fungi and a suite of bacteria -- is coming into sharper focus as a team of University of Wisconsin-Madison researchers has published the complete genome of the leafcutter ant, Atta cephalotes.
- The study, published Feb.
- 10, 2011 in the journal PLoS Genetics by an international team led by UW-Madison bacteriology professors Cameron Currie and Garret Suen, illustrates how lifestyle can remake an animal's genetic blueprint over the course of evolutionary history.
- The genome, the first for a leafcutter ant, reveals that the insect has shed genes that other ant species use to help acquire nutrients.
- The leafcutter, which cannot survive without its fungus food, has apparently slimmed its genome to get rid of genes it no longer needs due to its symbiotic lifestyle.
- "Presumably, the ants have lost these genes because of their dependency on the fungus," explains Wisconsin researcher Garret Suen, the lead author of the PLoS Genetics study.
- "They don't need these proteins kicking around any more."
- Altynbek
May 2013
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