Journal
ANNUAL REVIEW OF GENETICS
Volume 42, Issue -, Pages 165-190Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev.genet.41.110306.130119
Keywords
Buchnera; Wolbachia; Carsonella; aphid; coevolution; genome reduction
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Funding
- NSF [0626716, 0723472]
- National Institutes of Health [1K 12 GM00708]
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [K12GM000708] Funding Source: NIH RePORTER
- Div Of Molecular and Cellular Bioscience [1062363] Funding Source: National Science Foundation
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Insect heritable symbionts live proven to he ubiquitous, based on molecular screening of various insect lineages. Recently, molecular and experimental approaches have yielded all immensely richer understanding of their diverse biological roles, resulting in a burgeoning research literature. Increasingly, commonalities and intermediates are being discovered between categories of symbionts once considered distinct: obligate mutualists that provision nutrients, facultative mutualists that provide protection against enemies or stress, and symbionts such as Wolbachia that manipulate reproductive systems. Among the most far-reaching impacts of widespread heritable symbiosis is that it may promote speciation by increasing reproductive and ecological isolation of host populations, and it: effectively,provides :I means For transfer of genetic information among host lineages. In addition, insect symbionts provide some of the extremes of cellular genomes, including the smallest and the fastest evolving, raising new questions about the limits of evolution of life.
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