Systemic regulation of sulfur homeostasis in Medicago truncatula
文献类型：期刊论文
| 作者 | Gao, Yan1; Tian, Qiuying; Zhang, Wen-Hao
|
| 刊名 | PLANTA
 |
| 出版日期 | 2014 |
| 卷号 | 239期号:1页码:79-96 |
| 关键词 | Medicago Root morphology Split-root system Sulfur deficiency Sulfate transporters Systemic response |
| ISSN号 | 0032-0935 |
| DOI | 10.1007/s00425-013-1958-1 |
| 文献子类 | Article |
| 英文摘要 | Sulfur (S) is an essential macronutrient for plants, and deficiency in soil S availability limits plant growth. Adaptive strategies have been evolved by plants to respond to S deficiency by coordinating systemic regulatory mechanism. A split-root experiment using legume model plant Medicago truncatula Gaertn. was conducted to investigate the systemic response to S deficiency. Plant growth, root morphology and S contents under varying conditions of S supply were determined, and the expression of genes encoding sulfate transporter (MtSULTRs) and MtAPR1 encoding an enzyme involved in S assimilation was monitored. Our results demonstrated that there was an apparent systemic response of M. truncatula to heterogeneous S supply in terms of root length, S contents, and S uptake and assimilation at the transcriptional level. When exposed to heterogeneous S supply, M. truncatula plants showed proliferation of lateral roots in S-rich medium and reduction in investment to S-depleted roots. Growth was stimulated with half-part of roots exposed to S-deficient medium. There were different expression patterns of MtSULTRs and MtAPR1 in response to heterogeneous S supply both in roots and shoots of M. truncatula. Expression of MtSULTR1.1 and MtSULTR1.3 was systemically responsive to S deficiency, leading to an enhancement of S uptake in roots exposed to S-sufficient medium. In addition, the response of S-deprived seedlings to re-supply of sulfate and Cys was also analyzed. It was shown that sulfate, but not Cys, may serve as a systemic signal to regulate the expression of genes associated with S absorption and assimilation in M. truncatula. These findings provide a comprehensive picture of systemic responses to S deficiency in leguminous species. |
| 学科主题 | Plant Sciences |
| 出版地 | NEW YORK |
| 电子版国际标准刊号 | 1432-2048 |
| WOS关键词 | AFFINITY SULFATE TRANSPORTERS ; ARABIDOPSIS-THALIANA ; ATP SULFURYLASE ; 5'-ADENYLYLSULFATE REDUCTASE ; PHOSPHATE STARVATION ; ROOT ARCHITECTURE ; EXPRESSION ; PLANTS ; ASSIMILATION ; RESPONSES |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000329240700006 |
| 出版者 | SPRINGER |
| 资助机构 | Natural Science Foundation of China [31272234] ; State Key Laboratory of Vegetation and Environmental Change |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/27286]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.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 | Gao, Yan,Tian, Qiuying,Zhang, Wen-Hao. Systemic regulation of sulfur homeostasis in Medicago truncatula[J]. PLANTA,2014,239(1):79-96. |
| APA | Gao, Yan,Tian, Qiuying,&Zhang, Wen-Hao.(2014).Systemic regulation of sulfur homeostasis in Medicago truncatula.PLANTA,239(1),79-96. |
| MLA | Gao, Yan,et al."Systemic regulation of sulfur homeostasis in Medicago truncatula".PLANTA 239.1(2014):79-96. |
入库方式： OAI收割
来源：植物研究所
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