A small microbial genome: the end of a long symbiotic relationship?
VicentePérez-Brocal;
RosarioGil;
SilviaRamos;
AraceliLamelas;
MarinaPostigo;
José ManuelMichelena;
Francisco JSilva;
AndrésMoya;
AmparoLatorre;
(2006)
A small microbial genome: the end of a long symbiotic relationship?
Science (New York, NY), 314 (5797).
pp. 312-313.
ISSN 0036-8075
DOI: 10.1126/science.1130441
Intracellular bacteria are characterized by genome reduction. The 422,434-base pair genome of Buchnera aphidicola BCc, primary endosymbiont of the aphid Cinara cedri, is approximately 200 kilobases smaller than the previously sequenced B. aphidicola genomes. B. aphidicola BCc has lost most metabolic functions, including the ability to synthesize the essential amino acid tryptophan and riboflavin. In addition, most retained genes are evolving rapidly. Possibly, B. aphidicola BCc is losing its symbiotic capacity and is being complemented (and might be replaced) by the highly abundant coexisting secondary symbiont.
Item Type | Article |
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ISI | 241194100045 |
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