Related Experiment Video
Updated: Jul 11, 2026

Obtaining High-Quality Transcriptome Data from Cereal Seeds by a Modified Method for Gene Expression Profiling
Published on: May 21, 2020
Characterization of XET-related genes of rice
S Uozu1, M Tanaka-Ueguchi, H Kitano
1Graduate School of Bioagricultural Science and BioScience Center, Nagoya University, Chikusa, Nagoya 464-8601, Japan. uozu@nuagr1.agr.nagoya-u.ac.jp
Abstract:
To elucidate the mechanism of internodal elongation in rice (Oryza sativa L.), we analyzed genes encoding xyloglucan endotransglycosylase (XET), a cell wall-loosening enzyme essential for cell elongation. Four rice XET-related (XTR) genes, OsXTR1, OsXTR2, OsXTR3, and OsXTR4, were isolated and their expression patterns in rice plants determined. The expression of the four XTR genes showed different patterns of organ specificity and responses to several plant hormones. OsXTR1 and OsXTR3 were up-regulated by gibberellin and brassinosteroids, whereas OsXTR2 and OsXTR4 showed no clear response to these hormones. Expression of the four XTR genes was also investigated in elongating internodes at different developmental stages. OsXTR1 and OsXTR3 were preferentially expressed in the elongating zone of internodes, while OsXTR2 and OsXTR4 were expressed in nodes and in the divisional and elongating zones of internodes. In three genetic mutants with abnormal heights, the expression of OsXTR1 and OsXTR3 correlated with the height of the mutants, whereas no such correlation was observed for OsXTR2 and OsXTR4. Based on these observations, we discuss the roles that OsXTR1 and OsXTR3 may play in internodal elongation in rice.
Related Concept Videos
Inheritance of Chromatin Structures
Riboswitches
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
Exon Recombination
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Cell Signaling in Plants

