Genome-wide identification, evolutionary expansion, and expression profile of homeodomain-leucine zipper gene family in poplar (Populus trichocarpa).

ABSTRACT:

Background

Homeodomain-leucine zipper (HD-ZIP) proteins are plant-specific transcriptional factors known to play crucial roles in plant development. Although sequence phylogeny analysis of Populus HD-ZIPs was carried out in a previous study, no systematic analysis incorporating genome organization, gene structure, and expression compendium has been conducted in model tree species Populus thus far.

Principal findings

In this study, a comprehensive analysis of Populus HD-ZIP gene family was performed. Sixty-three full-length HD-ZIP genes were found in Populus genome. These Populus HD-ZIP genes were phylogenetically clustered into four distinct subfamilies (HD-ZIP I-IV) and predominately distributed across 17 linkage groups (LG). Fifty genes from 25 Populus paralogous pairs wer

SUBMITTER: Hu R 

PROVIDER: S-EPMC3281058 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature