dna - Which organism has the smallest genome length?

Which animal/plant/anything has smallest length genome?

Answer

Since you said plant/animal/anything, I offer the smallest genomes in various categories...

(Kb means Kilobases, Mb means Megabases. 1 Kb = 1000 base pairs, 1Mb = 1000Kb)

Refs...

• Chen, C.-L., Chang, P.-C., Lee, M.-S., Shien, J.-H., Ou, S.-J. & Shieh, H.K. (2003) Nucleotide sequences of goose circovirus isolated in Taiwan. Avian Pathology: Journal of the W.V.P.A. 32 (2), 165–171.


• Greilhuber, J., Borsch, T., Müller, K., Worberg, A., Porembski, S. & Barthlott, W. (2006) Smallest Angiosperm Genomes Found in Lentibulariaceae, with Chromosomes of Bacterial Size. Plant Biology. 8 (6), 770–777.


• Jaillon, O., Aury, J.-M., Brunet, F., Petit, J.-L., Stange-Thomann, N., Mauceli, E., Bouneau, L., Fischer, C., Ozouf-Costaz, C., Bernot, A., Nicaud, S., Jaffe, D., Fisher, S., Lutfalla, G., et al. (2004) Genome duplication in the teleost fish Tetraodon nigroviridis reveals the early vertebrate proto-karyotype. Nature. 431 (7011), 946–957.


• Nakabachi, A., Yamashita, A., Toh, H., Ishikawa, H., Dunbar, H.E., Moran, N.A. & Hattori, M. (2006) The 160-Kilobase Genome of the Bacterial Endosymbiont Carsonella. Science. 314 (5797), 267–267.


• Vivarès, C.P. & Méténier, G. (2004) Opportunistic Infections: Toxoplasma, Sarcocystis, and Microsporidia. In: World Class Parasites. Springer US. pp. 215–242.


• Waters, E., Hohn, M.J., Ahel, I., Graham, D.E., Adams, M.D., Barnstead, M., Beeson, K.Y., Bibbs, L., Bolanos, R., Keller, M., Kretz, K., Lin, X., Mathur, E., Ni, J., et al. (2003) The genome of Nanoarchaeum equitans: insights into early archaeal evolution and derived parasitism. Proceedings of the National Academy of Sciences of the United States of America. 100 (22), 12984–12988.