What is it about?
Compared to grass genomes, dicot and monocot genomes are typically homgoneous. Arabidopsis is a prototype of such poor genome heterogeneity. The questions that were addressed in this report are (i) how much the Arabidopsis genome can still be heterogeneous despite this apparent homogeneity, (ii) how its genome structures may justify this heterogeneity and (iii) how Arabidopsis may serve as a reference for comparative analysis of genome composition with other plant genomes.
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Why is it important?
The structure of the Arabidopsis genome is an important reference given its status as a model in plant genetics and biotechnology.
Perspectives
As shown from similar publications with other plant genomes, Arabidopsis can effectively be used as a reference to understand the compositional organization of homogeneous genomes and the extense of their bias in relation to heterogeneous genome such as maize and rice. In addition, despite to be heterogeneous, rice (small) and maize (large) genomes differ by their size, which can also be an important variable known to be correlated with the duration of the physiological phase between germination and flowering.
Nicolas Carels
Oswaldo Cruz Foundation
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This page is a summary of: The compositional organization and the expression of theArabidopsisgenome, FEBS Letters, April 2000, Wiley,
DOI: 10.1016/s0014-5793(00)01476-9.
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