拟南芥
根毛
突变体
细胞壁
基因
同源盒
木聚糖
生物
拟南芥
突变
野生型
遗传学
侧根
次生细胞壁
基因表达
细胞生物学
植物
作者
Rumi Tominaga-Wada,Mineko Iwata,Junji Sugiyama,Toshihisa Kotake,Tetsuya Ishida,Ryusuke Yokoyama,Kazuhiko Nishitani,Kiyotaka Okada,Takuji Wada
出处
期刊:Plant Journal
[Wiley]
日期:2009-10-28
卷期号:60 (3): 564-574
被引量:57
标识
DOI:10.1111/j.1365-313x.2009.03976.x
摘要
Arabidopsis root hair formation is determined by the patterning genes CAPRICE (CPC), GLABRA3 (GL3), WEREWOLF (WER) and GLABRA2 (GL2), but little is known about the later changes in cell wall material during root hair formation. A combined Fourier-transform infrared microspectroscopy-principal components analysis (FTIR-PCA) method was used to detect subtle differences in the cell wall material between wild-type and root hair mutants in Arabidopsis. Among several root hair mutants, only the gl2 mutation affected root cell wall polysaccharides. Five of the 10 genes encoding cellulose synthase (CESA1-10) and 4 of 33 xyloglucan endotransglucosylase (XTH1-33) genes in Arabidopsis are expressed in the root, but only CESA5 and XTH17 were affected by the gl2 mutation. The L1-box sequence located in the promoter region of these genes was recognized by the GL2 protein. These results indicate that GL2 directly regulates cell wall-related gene expression during root development.
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