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. 2009 Jan;149(1):117-24.
doi: 10.1104/pp.108.128520.

Synergy of two reference genomes for the grass family

Joachim Messing  1
Affiliations

Synergy of two reference genomes for the grass family

Joachim Messing. Plant Physiol. 2009 Jan.
No abstract available

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Figures

Figure 1.
Figure 1.
Expansion and contraction of chromosomes in progenitors of rice, sorghum, and maize. The assumption is made that expansion and contraction of chromosomes occurred in recent times long after speciation, perhaps mostly in the last 1 million years (Du et al., 2006). In rice, (1) expansion in pericentromeric regions was followed by (2) contraction and low retrotransposition throughout the chromosome (Ma and Bennetzen, 2004). Sorghum experienced mainly expansion in pericentromeric regions (Paterson et al., 2009). Maize underwent WGD of two diverged progenitors, then early on chromosome breakage and fusion, resulting in a mosaic of syntenous chromosome blocks (shown in different colors), which was followed by uneven expansion and contraction of those blocks (Bruggmann et al., 2006). Therefore, distribution of retroelement clusters is more even than in sorghum. The size of maize is 2.3 Gb or billion bases (Wei et al., 2007), of sorghum 0.73 (Paterson et al., 2009), and of rice 0.39 (International Rice Genome Sequencing Project, 2005).
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