Abstract
Expansin increases cell wall extensibility to allow cell wall loosening and cell expansion even in the absence of hydrolytic activity. Previous studies showed that excessive overexpression of expansin gene resulted in defective growth (Goh et al., 2014; Rochange et al., 2001) [1,2] and altered cell wall chemical composition (Zenoni et al., 2011) [3]. However, the molecular mechanism on how the overexpression of non-enzymatic cell wall protein expansin can result in widespread effects on plant cell wall and organ growth remains unclear. We acquired transcriptomic data on previously reported transgenic Arabidopsis line (Goh et al., 2014) [1] to investigate the effects of overexpressing a heterologus cucumber expansin gene (CsEXPA1) on the global gene expression pattern during early and late phases of etiolated hypocotyl growth.
Highlights
Expansin increases cell wall extensibility to allow cell wall loosening and cell expansion even in the absence of hydrolytic activity
Previous studies showed that excessive overexpression of expansin gene resulted in defective growth (Goh et al, 2014; Rochange et al, 2001) [1,2] and altered cell wall chemical composition (Zenoni et al, 2011) [3]
This is the first transcriptome data of etiolated Arabidopsis hypocotyl overexpressing an expansin gene compared with previous reports [4,5] on the suppression of endogenous expansin genes in Arabidopsis
Summary
This is the first transcriptome data of etiolated Arabidopsis hypocotyl overexpressing an expansin gene compared with previous reports [4,5] on the suppression of endogenous expansin genes in Arabidopsis. The present dataset is valuable for the identification of the genes which respond to expansin gene overexpression during the early and late phases of hypocotyl growth. Data reported here describe the sequencing results (Table 1) obtained from the control and dex-treated pOpON::CsEXPA1 Arabidopsis hypocotyls harvested on day 3 and day 5; each set with three biological replicates. This transcriptomic dataset was generated by QuantSeq. 3′ mRNA sequencing [6].
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