The evolution of Brassica napus FLOWERING LOCUS T paralogues in the context of inverted chromosomal duplication blocks.

ABSTRACT:

Background

The gene FLOWERING LOCUS T (FT) and its orthologues play a central role in the integration of flowering signals within Arabidopsis and other diverse species. Multiple copies of FT, with different cis-intronic sequence, exist and appear to operate harmoniously within polyploid crop species such as Brassica napus (AACC), a member of the same plant family as Arabidopsis.

Results

We have identified six BnFT paralogues from the genome of B. napus and mapped them to six distinct regions, each of which is homologous to a common ancestral block (E) of Arabidopsis chromosome 1. Four of the six regions were present within inverted duplicated regions of chromosomes A7 and C6. The coding sequences of BnFT paralogues showed 92-99% identities to each other and 85-87% identity w

SUBMITTER: Wang J 

PROVIDER: S-EPMC2794288 | biostudies-literature | 2009 Nov

REPOSITORIES: biostudies-literature