Open AccessMechanisms of Recent Genome Size Variation in Flowering Plants
Author(s) -
Jeffrey L. Bennetzen
Publication year - 2004
Publication title -
annals of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.567
H-Index - 176
eISSN - 1095-8290
pISSN - 0305-7364
DOI - 10.1093/aob/mci008
Subject(s) - retrotransposon , biology , genome , transposable element , genome size , homologous recombination , arabidopsis , genome evolution , genetics , recombination , ploidy , genetic variation , repeated sequence , evolutionary biology , dna , gene , mutant
Plant nuclear genomes vary tremendously in DNA content, mostly due to differences in ancestral ploidy and variation in the degree of transposon amplification. These processes can increase genome size, but little is known about mechanisms of genome shrinkage and the degree to which these can attenuate or reverse genome expansion. This research focuses on characterizing DNA removal from the rice and Arabidopsis genomes, and discusses whether loss of DNA has effectively competed with amplification in these species.
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