Brassinosteroids are involved in Fe homeostasis in rice (Oryza sativa L.)
文献类型：期刊论文
| 作者 | Wang, Baolan; Li, Gen; Zhang, Wen-Hao
|
| 刊名 | JOURNAL OF EXPERIMENTAL BOTANY
 |
| 出版日期 | 2015 |
| 卷号 | 66期号:9页码:2749-2761 |
| 关键词 | Brassinosteroids (BRs) d2-1 mutant Fe deficiency Fe translocation Fe uptake rice (Oryza sativa) strategy II plant |
| ISSN号 | 0022-0957 |
| DOI | 10.1093/jxb/erv079 |
| 文献子类 | Article |
| 英文摘要 | Brassinosteroids negatively regulate Fe transport and translocation in a strategy II rice plants.Brassinosteroids (BRs) are steroid hormones that modulate numerous physiological processes in plants. However, few studies have focused on the involvement of BRs in sensing and responding to the stress of mineral nutrient deficiency. In the present study, we evaluated the roles of BRs in the response of rice (Oryza sativa) to iron (Fe) deficiency during Fe uptake, transport, and translocation. Exogenous application of 24-epibrassinolide (EBR) to wild-type (WT) plants exaggerated leaf symptoms of Fe deficiency and suppressed growth. EBR increased and decreased Fe concentrations in roots and shoots, respectively, under both Fe-deficient and Fe-sufficient conditions. Transcripts involved in Fe homeostasis, including OsIRT1, OsYSL15, OsYSL2, OsNAS1, and OsNAS2, were enhanced by EBR under Fe-deficient conditions. EBR depressed expression of OsNAS1, OsNAS2, and OsYSL2 in shoots, and inhibited Fe transport and translocation via the phloem. Rice mutant d2-1, which is defective in BR biosynthesis, was more tolerant to Fe deficiency than the WT, and accumulated greater amounts of Fe in roots than the WT under Fe-sufficient conditions. A greater upregulation of OsIRT1, OsYSL15, OsYSL2, OsNAS1, and OsNAS2 in the d2-1 mutant compared to the WT was found under Fe-sufficient conditions, while expression of these genes in the d2-1 mutant was lower than in the WT under Fe-deficient conditions. The greater tolerance of the d2-1 mutant could be partly mitigated by exogenous application of EBR. These novel findings highlight the important role of BR in mediating the response of strategy II plants to Fe deficiency by regulating Fe uptake and translocation in rice. |
| 学科主题 | Plant Sciences |
| 出版地 | OXFORD |
| 电子版国际标准刊号 | 1460-2431 |
| WOS关键词 | LONG-DISTANCE TRANSPORT ; METAL-NICOTIANAMINE TRANSPORTER ; IRON-DEFICIENCY RESPONSES ; TRANSCRIPTION FACTOR ; ARABIDOPSIS-THALIANA ; CUCUMIS-SATIVUS ; PLANTS ; GENES ; TOLERANCE ; CITRATE |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000354742200029 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Natural Science Foundation of China [31101594] ; State Key Laboratory of Vegetation and Environmental Change |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25732]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Li, Gen 2.[Wang, Baolan 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Chinese Acad Sci, Beijing Inst Life Sci, Res Network Global Change Biol, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Baolan,Li, Gen,Zhang, Wen-Hao. Brassinosteroids are involved in Fe homeostasis in rice (Oryza sativa L.)[J]. JOURNAL OF EXPERIMENTAL BOTANY,2015,66(9):2749-2761. |
| APA | Wang, Baolan,Li, Gen,&Zhang, Wen-Hao.(2015).Brassinosteroids are involved in Fe homeostasis in rice (Oryza sativa L.).JOURNAL OF EXPERIMENTAL BOTANY,66(9),2749-2761. |
| MLA | Wang, Baolan,et al."Brassinosteroids are involved in Fe homeostasis in rice (Oryza sativa L.)".JOURNAL OF EXPERIMENTAL BOTANY 66.9(2015):2749-2761. |
入库方式： OAI收割
来源：植物研究所
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