TITLE

Survey of Genes Involved in Rice Secondary Cell Wall Formation Through a Co-Expression Network

AUTHOR(S)
Hirano, Ko; Aya, Koichiro; Morinaka, Yoichi; Nagamatsu, Shiro; Sato, Yutaka; Antonio, Baltazar A.; Namiki, Nobukazu; Nagamura, Yoshiaki; Matsuoka, Makoto
PUB. DATE
November 2013
SOURCE
Plant & Cell Physiology;Nov2013, Vol. 54 Issue 11, p1803
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The plant secondary cell wall is the major source of lignocellulosic biomass, a renewable energy resource that can be used for bioethanol production. To comprehensively identify transcription factors (TFs), glycosyltransferase (GT) and glycosyl hydrolase (GH) involved in secondary cell wall formation in rice (Oryza sativa), co-expression network analysis was performed using 68 microarray data points for different rice tissues and stages. In addition to rice genes encoding orthologs of Arabidopsis thaliana TFs known to regulate secondary cell wall formation, the network analysis suggested many novel TF genes likely to be involved in cell wall formation. In the accompanying paper (Hirano et al.), several of these TFs are shown to be involved in rice secondary cell wall formation. Based on a comparison of the rice and Arabidopsis networks, TFs were classified as common to both species or specific to each plant species, suggesting that in addition to a common transcriptional regulatory mechanism of cell wall formation, the two plants may also use species-specific groups of TFs during secondary wall formation. Similarly, genes encoding GT and GH were also classified as genes showing species-common or species-specific expression patterns. In addition, genes for primary or secondary cell wall formation were also suggested. The list of rice TF, GT and GH genes provides an opportunity to unveil the regulation of secondary cell wall formation in grasses, leading to optimization of the cell wall for biofuel production.
ACCESSION #
91828612

 

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