Osmt1a, a type 1 metallothionein, plays the pivotal role in zinc homeostasis and drought tolerance in rice
文献类型：期刊论文
| 作者 | Yang, Zhao1,2,3; Wu, Yaorong1,2,3; Li, Ye4; Ling, Hong-Qing4; Chu, Chengcai1,2 |
| 刊名 | Plant molecular biology
 |
| 出版日期 | 2009-05-01 |
| 卷号 | 70期号:1-2页码:219-229 |
| ISSN号 | 0167-4412 |
| 关键词 | Rice Metallothioneins Osmt1a Zinc homeostasis Zinc finger transcription factor Drought tolerance |
| DOI | 10.1007/s11103-009-9466-1 |
| 通讯作者 | Chu, chengcai(ccchu@genetics.ac.cn) |
| 英文摘要 | Metallothioneins (mts) are small, cysteine-rich, metal-binding proteins that may be involved in metal homeostasis and detoxification in both plants and animals. osmt1a, encoding a type 1 metallothionein, was isolated via suppression subtractive hybridization from brazilian upland rice (oryza sativa l. cv. iapar 9). expression analysis revealed that osmt1a predominantly expressed in the roots, and was induced by dehydration. interestingly, the osmt1a expression was also induced specifically by zn(2+) treatment. both transgenic plants and yeasts harboring osmt1a accumulated more zn(2+) than wild type controls, suggesting osmt1a is most likely to be involved in zinc homeostasis. transgenic rice plants overexpressing osmt1a demonstrated enhanced tolerance to drought. the examination of antioxidant enzyme activities demonstrated that catalase (cat), peroxidase (pod) and ascorbate peroxidase (apx) were significantly elevated in transgenic plants. furthermore, the transcripts of several zn(2+)-induced ccch zinc finger transcription factors accumulated in osmt1a transgenic plants, suggesting that osmt1a not only participates directly in ros scavenging pathway but also regulates expression of the zinc finger transcription factors via the alteration of zn(2+) homeostasis, which leads to improved plant stress tolerance. |
| WOS关键词 | HEAVY-METAL DETOXIFICATION ; ORYZA-SATIVA L. ; GENE-EXPRESSION ; OXIDATIVE STRESS ; SALT STRESS ; DIFFERENTIAL RESPONSE ; TRANSCRIPTION FACTOR ; SALINITY STRESS ; FINGER PROTEINS ; UP-REGULATION |
| WOS研究方向 | Biochemistry & Molecular Biology ; Plant Sciences |
| WOS类目 | Biochemistry & Molecular Biology ; Plant Sciences |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000264880200015 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2403571 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Chu, Chengcai |
| 作者单位 | 1.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Genom, Beijing 100039, Peoples R China 2.Chinese Acad Sci, Inst Genet & Dev Biol, Natl Ctr Plant Gene Res Beijing, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 4.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Cell & Chromosome Engn, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Zhao,Wu, Yaorong,Li, Ye,et al. Osmt1a, a type 1 metallothionein, plays the pivotal role in zinc homeostasis and drought tolerance in rice[J]. Plant molecular biology,2009,70(1-2):219-229. |
| APA | Yang, Zhao,Wu, Yaorong,Li, Ye,Ling, Hong-Qing,&Chu, Chengcai.(2009).Osmt1a, a type 1 metallothionein, plays the pivotal role in zinc homeostasis and drought tolerance in rice.Plant molecular biology,70(1-2),219-229. |
| MLA | Yang, Zhao,et al."Osmt1a, a type 1 metallothionein, plays the pivotal role in zinc homeostasis and drought tolerance in rice".Plant molecular biology 70.1-2(2009):219-229. |
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来源：中国科学院大学
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