Centromere and telomere sequence alterations reflect the rapid genome evolution within the carnivorous plant genus Genlisea

0454696 - BC 2016 RIV GB eng J - Journal Article
Tran, T.D. - Cao, H.X. - Jovtchev, G. - Neumann, Pavel - Novák, Petr - Fojtová, M. - Vu, G.T.H. - Macas, Jiří - Fajkus, Jiří - Schubert, I. - Fuchs, J.
Centromere and telomere sequence alterations reflect the rapid genome evolution within the carnivorous plant genus Genlisea.
Plant Journal. Roč. 84, č. 6 (2015), s. 1087-1099. ISSN 0960-7412. E-ISSN 1365-313X
R&D Projects: GA ČR GBP501/12/G090; GA ČR GA13-06943S
Institutional support: RVO:60077344 ; RVO:68081707
Keywords : Centromeric tandem repeat * centromeric retrotransposons * Genlisea nigrocaulis, hispidula
Subject RIV: EB - Genetics ; Molecular Biology; BO - Biophysics (BFU-R)
Impact factor: 5.468, year: 2015

Linear chromosomes of eukaryotic organisms invariably possess centromeres and telomeres to ensure proper chromosome segregation during nuclear divisions and to protect the chromosome ends from deterioration and fusion, respectively. While centromeric sequences may differ between species, with arrays of tandemly repeated sequences and retrotransposons being the most abundant sequence types in plant centromeres, telomeric sequences are usually highly conserved among plants and other organisms. The genome size of the carnivorous genus Genlisea (Lentibulariaceae) is highly variable. Here we study evolutionary sequence plasticity of these chromosomal domains at an intrageneric level. We show that Genlisea nigrocaulis (1C = 86 Mbp; 2n = 40) and G. hispidula (1C = 1550 Mbp; 2n = 40) differ as to their DNA composition at centromeres and telomeres.
Permanent Link: http://hdl.handle.net/11104/0255347