𝔖 Bobbio Scriptorium
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Rapid structural and epigenetic changes in polyploid and aneuploid genomes

✍ Scribed by M.A. Matzke; O. Mittelsten Scheid; A.J.M. Matzke

Book ID
101298375
Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
86 KB
Volume
21
Category
Article
ISSN
0265-9247

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✦ Synopsis

Recent work with plants has demonstrated that genome instability can be triggered by a change in chromosome number arising from either whole genome duplications (polyploidy) or loss/gain of individual chromosomes (aneuploidy). This genome instability is manifested as rapid structural and epigenetic alterations that can occur somatically or meiotically within a few generations after heteroploid formation. The intrinsic instability of newly formed polyploid and aneuploid genomes has relevance for genome evolution and human carcinogenesis, and points toward recombinational and epigenetic mechanisms that sense and respond to chromosome numerical changes. BioEssays 21:761-767, 1999.

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Polyploidy is produced by multiplication of a single genome (autopolyploid) or combination of two or more divergent genomes (allopolyploid). The available data obtained from the study of synthetic (newly created or human-made) plant allopolyploids have documented dynamic and stochastic changes in ge