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Reference Detail
| Reference | ||
|---|---|---|
| Author | Suzuki C., Tanaka W., Tsuji H., Hirano H.Y. | |
| Title | <i>TILLERS ABSENT1</i>, the <i>WUSCHEL</i> ortholog, is not involved in stem cell maintenance in the shoot apical meristem in rice. | |
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Abstract: Stem cell maintenance in the shoot apical meristem (SAM) is very important for plant development and is regulated by the WUSCHEL-CLAVATA (WUS<i>-</i>CLV) feedback loop in Arabidopsis (<i>Arabidopsis thaliana</i>). <i>WUS</i> promotes stem cell identity, whereas <i>CLV</i> negatively regulates stem cell proliferation by repressing <i>WUS</i> expression. We previously showed that, in rice (<i>Oryza sativa</i>), the <i>WUS</i> ortholog <i>TILLERS ABSENT1</i> (<i>TAB1</i>, also known as <i>OsWUS</i>) has no function in SAM maintenance, whereas it plays a crucial role in axillary meristem development. Recently, we showed that a double mutant of <i>FLORAL ORGAN NUMBER2</i> (<i>fon2</i>) and <i>ABERRANT SPIKELET AND PANICLE1</i> (<i>ASP1</i>) led to a marked enlargement of the inflorescence meristem, and that the <i>TAB1</i> function is not associated with massive stem cells in this meristem. In this paper, we confirmed that <i>TAB1</i> is also unrelated to the enlargement of the SAM in the vegetative phase of the <i>fon2</i> and <i>fon2 ASP1</i> mutants. In addition, misexpression of <i>TAB1</i> under the promoter of <i>FON1</i> led to a slight reduction of the SAM size in wild type, suggesting that <i>TAB1</i> is not a positive regulator of stem cells. Taking together, <i>TAB1</i> seems not to be involved in meristem maintenance, irrespective of the meristem type. |
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| Journal | Plant Signal Behav | |
| Country | Japan | |
| Volume | 14(9) | |
| Pages | 1640565 | |
| Year | 2019 | |
| PubMed ID | 31284830 | |
| PubMed Central ID | 6768262 | |
| DOI | 10.1080/15592324.2019.1640565 | |
| URL | - | |
| Relation | ||
| Gene | ASP1 FON2 TAB1 | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
|
Lethal Embryo Mutantion Strain |
- | |
|
Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
