SlTIR1 is involved in crosstalk of phytohormones, regulates auxin-induced root growth and stimulates stenospermocarpic fruit formation in tomato
文献类型：期刊论文
| 作者 | Ren, Zhenxin1 ; Wang, Xiaomin2
|
| 刊名 | PLANT SCIENCE
 |
| 出版日期 | 2016-12-01 |
| 卷号 | 253页码:13-20 |
| 关键词 | SlTIR1 Auxin signaling Hormone crosstalk Root formation Stenospermocarpic fruit |
| ISSN号 | 0168-9452 |
| DOI | 10.1016/j.plantsci.2016.09.005 |
| 英文摘要 | TIR1 and its homologs act as auxin receptors and play important roles in plant growth and development in Arabidopsis thaliana. An auxin receptor homolog Solanum lycopersicum TIR1 (SlTIR1) has been isolated from tomato cultivar Micro-Tom, and SlTIR1 over-expression results in parthenocarpic fruit formation. In this study, the promoter driving the beta-glucuronidase (GUS) expression vector was constructed and stably transformed into Micro-Tom seedlings. The SlTIR1 promoter driving GUS expression accumulated predominantly in the leaf and vasculature in transgenic seedlings. Promoter analysis identified an auxin-response element (AuxRE) and two gibberellic acid (GA)-response elements in the SlTIR1 promoter. Quantitative PCR showed that SlTIR1 transcript level was down-regulated by naphthaleneacetic acid, ethephon and abscisic acid and up-regulated by GA. Furthermore, because of the lack of ability to form reproductive seeds in SlTIR1 over-expressing Micro-Tom, this limits further exploration of potential roles of SlTIR1 in auxin signaling. Here, an antisense vector and an over-expression vector of the SlTIR1 gene were stably transformed into Micro-Tom and Ailsa Craig tomato, respectively. Phenotypes and physiological analyses indicated that SlTIR1 regulated primary root growth and auxin-associated lateral root formation in Micro-Tom. Meanwhile, SlTIR1 also stimulated abnormal seed development, so-called stenospermocarpy, in Ailsa Craig. Transcript accumulations of auxin-signaling genes determined by quantitative PCR were consistent with the idea that SlTIR1 regulated plant growth and development, partially mediated by controlling the mRNA levels of auxin-signaling genes. Our work demonstrates that SlTIR1 regulated auxin-induced root growth and stimulated stenospermocarpic fruit formation. SlTIR1 may be a key mediator of the crosstalk among auxin and other hormones to co-regulate plant growth and development. (C) 2016 Elsevier Ireland Ltd. All rights reserved. |
| WOS关键词 | BOX PROTEIN TIR1 ; LEAF MORPHOGENESIS ; PEA FRUIT ; GIBBERELLIN ; ARABIDOPSIS ; RECEPTOR ; EXPRESSION ; FAMILY ; SET ; DEGRADATION |
| 资助项目 | National Natural Science Foundation of China[31360485] ; Guangxi Natural Science Foundation[2012GXNSFBA053076] |
| WOS研究方向 | Biochemistry & Molecular Biology ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000388049000002 |
| 出版者 | ELSEVIER IRELAND LTD |
| 资助机构 | National Natural Science Foundation of China ; Guangxi Natural Science Foundation |
| 源URL | [http://119.78.100.186/handle/113462/43696]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Ren, Zhenxin; Wang, Xiaomin |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Dept Space Radiobiol, Key Lab Heavy Ion Radiat Biol & Med, Lanzhou 730000, Peoples R China 2.Yulin Normal Univ, Coll Biol & Pharm, Yulin 537000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Zhenxin,Wang, Xiaomin. SlTIR1 is involved in crosstalk of phytohormones, regulates auxin-induced root growth and stimulates stenospermocarpic fruit formation in tomato[J]. PLANT SCIENCE,2016,253:13-20. |
| APA | Ren, Zhenxin,&Wang, Xiaomin.(2016).SlTIR1 is involved in crosstalk of phytohormones, regulates auxin-induced root growth and stimulates stenospermocarpic fruit formation in tomato.PLANT SCIENCE,253,13-20. |
| MLA | Ren, Zhenxin,et al."SlTIR1 is involved in crosstalk of phytohormones, regulates auxin-induced root growth and stimulates stenospermocarpic fruit formation in tomato".PLANT SCIENCE 253(2016):13-20. |
入库方式： OAI收割
来源：近代物理研究所
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