Structure and functions of model plant Arabidopsis thaliana genome
2002
Chelkowski, J. | Ziolkowski, P. (Polska Akademia Nauk, Poznan (Poland). Inst. Genetyki Roslin)
Genome of first model plant Arabidopsis thaliana was sequenced in 2000.The genome is composed of five chromosomes, containing 29.1, 19.6, 23.2, 17.5 and 26.0 Mbp, respectively, in total 125 Mbp and 25498 genes. Genes contain approximately 2000 bp, coding polypeptide chain of about 50000 daltons. Genomes of cultivated plants are expected to contain similar number of genes, however the amount of repetitive sequences is significantly different among individual species. In Arabidopsis genome the repetitive sequences are present in amount of 50 percent of DNA. About 10 percent of genes are involved in cell defense responses. Function of about 10 percent of genes with known structure are of not yet known function
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