Organization of retrotransposons and microsatellites in cereal genomes
作者： Alan H. Schulman , Pushpendra K. Gupta , Rajeev K. Varshney
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摘要: Our understanding of genome organization has its roots in postwar interest in the effects radiation. Observations on the relationship between doses of ionizing radiation and frequency mutations (Abrahamson et ai., 1 973; Trujillo Dugan, 975) indicated that size genetic target receiving dose varied considerably organisms. By the beginning 970s, this phenomenon had come to be known as "Cvalue paradox" (Thomas, 97 ). The paradox was total size, or C-value, widely within a given clade organisms bore no relationship organismal complexity. For example, two legumes the same genus, Vida/aba Vida sativa, have haploid genomes 3. x 09 and 2.2 x109 respectively, but differ very little morphologically. This observation been fully confIrmed by large-scale determination of genome sizes many plants (http://www. rbgkew.org.uk/cvalues), within which varies from about 107 bp Cardamine Arabidopsis among Crucifereae nearly 011 Fritillaria among Lilliaceae. Within cereals, rice (Oryza sativa) compact 4.8 08 bp, ranging upwards through sorghum (7.35 08), maize (26.7 and barley (54.4 bp)......
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