%0 Journal Article
%T Genome-Wide Analysis of the MADS-Box Gene Family in Brachypodium distachyon
%A Bo Wei
%A Rong-Zhi Zhang
%A Juan-Juan Guo
%A Dan-Mei Liu
%A Ai-Li Li
%A Ren-Chun Fan
%A Long Mao
%A Xiang-Qi Zhang
%J PLOS ONE
%D 2014
%I Public Library of Science (PLoS)
%R 10.1371/journal.pone.0084781
%X MADS-box genes are important transcription factors for plant development, especially floral organogenesis. Brachypodium distachyon is a model for biofuel plants and temperate grasses such as wheat and barley, but a comprehensive analysis of MADS-box family proteins in Brachypodium is still missing. We report here a genome-wide analysis of the MADS-box gene family in Brachypodium distachyon. We identified 57 MADS-box genes and classified them into 32 MIKCc-type, 7 MIKC*-type, 9 M¦Á, 7 M¦Â and 2 M¦Ã MADS-box genes according to their phylogenetic relationships to the Arabidopsis and rice MADS-box genes. Detailed gene structure and motif distribution were then studied. Investigation of their chromosomal localizations revealed that Brachypodium MADS-box genes distributed evenly across five chromosomes. In addition, five pairs of type II MADS-box genes were found on synteny blocks derived from whole genome duplication blocks. We then performed a systematic expression analysis of Brachypodium MADS-box genes in various tissues, particular floral organs. Further detection under salt, drought, and low-temperature conditions showed that some MADS-box genes may also be involved in abiotic stress responses, including type I genes. Comparative studies of MADS-box genes among Brachypodium, rice and Arabidopsis showed that Brachypodium had fewer gene duplication events. Taken together, this work provides useful data for further functional studies of MADS-box genes in Brachypodium distachyon.
%U http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0084781