Origin and evolution of twin microsatellites in the genus oryza

被引：7

作者：

Akagi H. ^{[1
]}

Yokozeki Y. ^{[1
]}

Inagaki A. ^{[1
]}

Fujimura T. ^{[1
]}

机构：

[1] Biochemical Technology Section, Life Science Institute Laboratory, Performance Materials R and D Center, Mitsui Chemicals Inc., Mobara, 297

来源：

Heredity | 1998年 / 81卷 / 2期

关键词：

Microsatellites; Oryza; Rice;

D O I：

10.1046/j.1365-2540.1998.00371.x

中图分类号：

学科分类号：

摘要：

An ancestral sequence of twin microsatellites of rice was found in a wild species. Twin microsatellite loci, RM20A and RM20B, were located on separate regions of chromosomes 11 and 12, which had been duplicated during rice evolution. These twin microsatellites showed different allele diversities in A genome species of the genus Oryza. This difference was caused by repetition of a simple sequence consisting of (TAA)n. Oryza longistaminata contains a short poly(A) sequence in this region instead of the poly(TAA) found in other species. A sequence comparison of RM20-related amplicons suggested that the poly(A)-containing sequence is the ancestral sequence of the RM20A and RM20B microsatellites. A simple base substitution in the poly(A) sequence may have produced the longer microsatellite motif (TAA). This mutation may have occurred on one of the chromosomes of a hypothetical ancestor of the A genome species before duplication of the chromosome segments. © 1998 The Genetical Society of Great Britain.

引用

页码：188 / 197

页数：9

共 30 条

[1]

Akagi H., Yokozeki Y., Inagaki A., Fujimura T., Microsatellite DNA markers for the rice chromosomes, Theor. Appl. Genet., 93, pp. 1071-1077, (1996)

[2]

Akagi H., Yokozeki Y., Inagaki A., Fujimura T., Highly polymorphic microsatellites of rice consist of AT repeats, and classification of closely related culti-vars with these microsatellite loci, Theor. Appl. Genet., 94, pp. 61-67, (1997)

[3]

Akkaya M.S., Bhagwat A.A., Cregan P.B., Length polymorphisms of simple sequence repeat DNA in soybean, Genetics, 132, pp. 1131-1139, (1992)

[4]

Becker J., Heun M., Barley microsatellites, allele variation and mapping, Plant Mol. Biol, 27, pp. 835-845, (1995)

[5]

Bowcock A.M., Ruiz-Linares A., Tomfohrde J., Minch E., Kidd J.R., Cavalli-Sforza L.L., High resolution of human evolutionary trees with polymorphic microsatellites, Nature, 368, pp. 455-457, (1994)

[6]

Broun P., Tanksley S.D., Characterization and genetic mapping of simple repeat sequences in the tomato genome, Mol. Gen. Genet., 250, pp. 39-49, (1996)

[7]

Caskey C.T., Pizzuti A., Hu Y.-H., Fenwick R.G., Nelson D.L., Triplet repeat mutations in human disease, Science, 256, pp. 784-789, (1992)

[8]

Chen W.-B., Nakamura I., Sato Y.-I., Nakai H., Distribution of deletion type in cpDNA of cultivated and wild rice, Jap. J. Genet:., 68, pp. 597-603, (1993)

[9]

Dally A.M., Second G., Chloroplast DNA diversity in wild and cultivated species of rice (Genus Oryza, section Oryza). Cladistic-mutation and genetic-distance analysis, Theor. Appl. Genet., 80, pp. 209-222, (1990)

[10]

Dib C., Faure S., Fizames C., Samson D., Drouot N., Vignal A., Et al., A comprehensive genetic map of the human genome based on 5, 264 microsatellites, Nature, 380, pp. 152-154, (1996)

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