Osexpa4 and osrwc3 are involved in asymmetric growth during gravitropic bending of rice leaf sheath bases
文献类型：期刊论文
| 作者 | Hu, Liwei; Cui, Dayong; Neill, Steven; Cai, Weiming |
| 刊名 | Physiologia plantarum
 |
| 出版日期 | 2007-08-01 |
| 卷号 | 130期号:4页码:560-571 |
| ISSN号 | 0031-9317 |
| DOI | 10.1111/j.1399-3054.2007.00912.x |
| 通讯作者 | Cai, weiming(wmcai@sibs.ac.cn) |
| 英文摘要 | Expression of an expansin gene (osexpa4) and a plasma membrane aquaporin (osrwc3) were differentially induced in the abaxial (lower) side of rice leaf sheath bases during gravitropism. expression of both of these genes was induced by ga(3). beta-glucuronidase (gus) activity in transgenic rice expressing a gus reporter gene under the control of the gibberellin (ga)-responsive osrwc3 promoter was investigated during gravitropic curvature and found to be enhanced in the abaxial side of graviresponding leaf sheath bases. ancymidol, a ga biosynthesis inhibitor, reduced the expression gradient of osexpa4 and osrwc3. the osmotic potential was transiently lower on the abaxial side of gravistimulated leaf sheath bases, and the gravitropic curvature was inhibited by hgcl2 and phloretin, two known inhibitors of aquaporins. these data suggest that asymmetric ga redistribution following gravistimulation results in the localized expression of osexpa4 and osrwc3, that in turn might bring about differential cell wall loosening, cell expansion and water influx via aquaporins, thus leading to gravitropic bending. |
| WOS关键词 | DEEP-WATER RICE ; EXPANSIN GENE-EXPRESSION ; PLANT-CELL WALLS ; CHANNEL-MEDIATED TRANSPORT ; MAJOR INTRINSIC PROTEINS ; ARABIDOPSIS-THALIANA ; AUXIN-TRANSPORT ; ALPHA-EXPANSIN ; RYE SEEDLINGS ; GIBBERELLIN BIOSYNTHESIS |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000247925800009 |
| 出版者 | BLACKWELL PUBLISHING |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2380500 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Cai, Weiming |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Organ Chem, Grad Sch, Inst Plant Physiol & Ecol, Shanghai 200032, Peoples R China 2.Univ W England, Ctr Res Plant Sci, Bristol BS16 1QY, Avon, England |
| 推荐引用方式 GB/T 7714 | Hu, Liwei,Cui, Dayong,Neill, Steven,et al. Osexpa4 and osrwc3 are involved in asymmetric growth during gravitropic bending of rice leaf sheath bases[J]. Physiologia plantarum,2007,130(4):560-571. |
| APA | Hu, Liwei,Cui, Dayong,Neill, Steven,&Cai, Weiming.(2007).Osexpa4 and osrwc3 are involved in asymmetric growth during gravitropic bending of rice leaf sheath bases.Physiologia plantarum,130(4),560-571. |
| MLA | Hu, Liwei,et al."Osexpa4 and osrwc3 are involved in asymmetric growth during gravitropic bending of rice leaf sheath bases".Physiologia plantarum 130.4(2007):560-571. |
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来源：中国科学院大学
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