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Reference Detail
| Reference | ||
|---|---|---|
| Author | Zhiming Y,Bo K,Xiaowei H,Shaolei L,Youhuang B,Wona D,Ming C,Hyung-Taeg C,Ping W | |
| Title | Root hair-specific EXPANSINs modulate root hair elongation in rice. | |
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Abstract: Root hair growth requires intensive cell-wall modification. This study demonstrates that root hair-specific expansin As, a sub-clade of the cell wall-loosening expansin proteins, are required for root hair elongation in rice (Oryza sativa L.). We identified a gene encoding EXPA17 (OsEXPA17) from a rice mutant with short root hairs. Promoter::reporter transgenic lines exhibited exclusive OsEXPA17 expression in root hair cells. The OsEXPA17 mutant protein (OsexpA17) contained a point mutation, causing a change in the amino acid sequence (Gly104→Arg). This amino acid alteration is predicted to disrupt a highly conserved disulfide bond in the mutant. Suppression of OsEXPA17 by RNA interference further confirmed requirement for the gene in root hair elongation. Complementation of the OsEXPA17 mutant with other root hair EXPAs (OsEXPA30 and Arabidopsis EXPA7) can restore root hair elongation, indicating functional conservation of these root hair EXPAs in monocots and dicots. These results demonstrate that members of the root hair EXPA sub-clade play a crucial role in root hair cell elongation in Graminaceae. |
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| Journal | Plant J. | |
| Country | China | |
| Volume | 66(5) | |
| Pages | 725-34 | |
| Year | 2011 | |
| PubMed ID | 21309868 | |
| PubMed Central ID | - | |
| DOI | 10.1111/j.1365-313X.2011.04533.x | |
| URL | - | |
| Relation | ||
| Gene | EXPA11 EXPA12 EXPA13 EXPA15 EXPA17 EXPA22 EXPA30 EXPB5 RHL1 RTH1 | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
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Lethal Embryo Mutantion Strain |
- | |
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Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
