NDLI: Evidence of Intense Chromosomal Shuffling during Conifer Evolution

Content Provider	PubMed Central
Author	Miguel, Marina De Bartholomé, Jérôme François, Ehrenmann Murat, Florent Moriguchi, Yoshinari Uchiyama, Kentaro Ueno, Saneyoshi Tsumura, Yoshihiko Lagraulet, Hélène Maria, Nuria De Cabezas, José-antonio Cervera, María-teresa Gion, Jean Marc Salse, Jérôme Christophe, Plomion
Copyright Year	2015
Abstract	Although recent advances have been gained on genome evolution in angiosperm lineages, virtually nothing is known about karyotype evolution in the other group of seed plants, the gymnosperms. Here, we used high-density gene-based linkage mapping to compare the karyotype structure of two families of conifers (the most abundant group of gymnosperms) separated around 290 Ma: Pinaceae and Cupressaceae. We propose for the first time a model based on the fusion of 20 ancestral chromosomal blocks that may have shaped the modern karyotpes of Pinaceae (with n = 12) and Cupressaceae (with n = 11). The considerable difference in modern genome organization between these two lineages contrasts strongly with the remarkable level of synteny already reported within the Pinaceae. It also suggests a convergent evolutionary mechanism of chromosomal block shuffling that has shaped the genomes of the spermatophytes.
Related Links	http://dx.doi.org/10.1093/gbe/evv185
Page Count	1
Starting Page	2799
File Format	PDF
ISSN	17596653
e-ISSN	17596653
Journal	Genome Biology and Evolution
Issue Number	10
Volume Number	7
Language	English
Publisher	Oxford University Press
Publisher Date	2015-09-01
Access Restriction	Open
Rights Holder	Oxford University Press
Subject Keyword	Genetics Ecology, Evolution, Behavior and Systematics Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Genetics Ecology, Evolution, Behavior and Systematics

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