The lipoxygenase gene family: a genomic fossil of shared polyploidy between Glycine max and Medicago truncatula.

ABSTRACT:

Background

Soybean lipoxygenases (Lxs) play important roles in plant resistance and in conferring the distinct bean flavor. Lxs comprise a multi-gene family that includes GmLx1, GmLx2 and GmLx3, and many of these genes have been characterized. We were interested in investigating the relationship between the soybean lipoxygenase isozymes from an evolutionary perspective, since soybean has undergone two rounds of polyploidy. Here we report the tetrad genome structure of soybean Lx regions produced by ancient and recent polyploidy. Also, comparative genomics with Medicago truncatula was performed to estimate Lxs in the common ancestor of soybean and Medicago.

Results

Two Lx regions in Medicago truncatula showing synteny with soybean were analyzed. Differential evolutionary rate

SUBMITTER: Shin JH 

PROVIDER: S-EPMC2644698 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature