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E.g., Wessler, regeneration, PubMed ID 17578919.

expand all sections collapse all sections  Reference "Are rice chromosomes components of a holocentric chromosome ancestor"
Reference ID 2913
Title Are rice chromosomes components of a holocentric chromosome ancestor
Source Plant molecular biology, 1997, vol. 35, pp. 17-23
Authors (6)
Abstract Comparative genomics reveals that cereal genomes are composed of similar genomic
building blocks (linkage blocks). By stacking these blocks in a unique order, it
is possible to construct a single ancestral 'chromosome' which can be cleaved to
give the basic structure of the 56 different chromosomes found in wheat, rice,
maize, sorghum, millet and sugarcane. The borders of linkage blocks are defined
by cereal centromeric and telomeric sites. However, a number of studies have
shown that telomeric heterochromatin has neocentromeric activity, implying that
linkage blocks are in fact defined by centromeric-like sites with conserved
sequences. The structure of the ancestral cereal genome thus resembles a
holocentric chromosome, which is the chromosome structure shared by the closest
relatives of the Gramineae, the Cypericeae and Juncaceae.
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