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| Genome variations account for different response to three mineral elements between Medicago truncatula ecotypes Jemalong A17 and R108 | |
Wang, Tian-Zuo; Tian, Qiu-Ying; Wang, Bao-Lan; Zhao, Min-Gui; Zhang, Wen-Hao
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| 2014 | |
| 发表期刊 | BMC PLANT BIOLOGY
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| ISSN | 1471-2229 |
| 卷号 | 14 |
| 摘要 | Background: Resequencing can be used to identify genome variations underpinning many morphological and physiological phenotypes. Legume model plant Medicago truncatula ecotypes Jemalong A17 (J. A17) and R108 differ in their responses to mineral toxicity of aluminum and sodium, and mineral deficiency of iron in growth medium. The difference may result from their genome variations, but no experimental evidence supports this hypothesis. Results: A total of 12,750 structure variations, 135,045 short insertions/deletions and 764,154 single nucleotide polymorphisms were identified by resequencing the genome of R108. The suppressed expression of MtAACT that encodes a putative aluminum-induced citrate efflux transporter by deletion of partial sequence of the second intron may account for the less aluminum-induced citrate exudation and greater accumulation of aluminum in roots of R108 than in roots of J. A17, thus rendering R108 more sensitive to aluminum toxicity. The higher expression-level of MtZpt2-1 encoding a TFIIIA-related transcription factor in J. A17 than R108 under conditions of salt stress can be explained by the greater number of stress-responsive elements in its promoter sequence, thus conferring J. A17 more tolerant to salt stress than R108 plants by activating the expression of downstream stress-responsive genes. YSLs (Yellow Stripe-Likes) are involved in long-distance transport of iron in plants. We found that an YSL gene was deleted in the genome of R108 plants, thus rendering R108 less tolerance to iron deficiency than J. A17 plants. Conclusions: The deletion or change in several genes may account for the different responses of M. truncatula ecotypes J. A17 and R108 to mineral toxicity of aluminum and sodium as well as iron deficiency. Uncovering genome variations by resequencing is an effective method to identify different traits between species/ecotypes that are genetically related. These findings demonstrate that analyses of genome variations by resequencing can shed important light on differences in responses of M. truncatula ecotypes to abiotic stress in general and mineral stress in particular. |
| 关键词 | Resequencing Medicago truncatula Aluminum toxicity Aluminum- activated citrate transporter Salt stress MtZpt2-1 Iron deficiency Yellow Stripe-Likes |
| 学科领域 | Plant Sciences |
| DOI | 10.1186/1471-2229-14-122 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | ALUMINUM-ACTIVATED CITRATE ; ARABIDOPSIS-THALIANA ; SALT STRESS ; REGULATORY PATHWAYS ; DEHYDRATION STRESS ; GENETIC DIVERSITY ; IRON-DEFICIENCY ; ABIOTIC STRESS ; ORGANIC-ACIDS ; YELLOW-STRIPE |
| WOS研究方向 | Plant Sciences |
| WOS记录号 | WOS:000336861700001 |
| 出版者 | BIOMED CENTRAL LTD |
| 文献子类 | Article |
| 出版地 | LONDON |
| 资助机构 | National Natural Science Foundation of China [31272234, 31300231] ; State Key Laboratory of Vegetation and Environmental Change [2014ZDFX04] |
| 作者邮箱 | whzhang@ibcas.ac.cn |
| 作品OA属性 | Green Published, gold |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/27353 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.[Wang, Tian-Zuo 2.Tian, Qiu-Ying 3.Wang, Bao-Lan 4.Zhao, Min-Gui 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 6.Chinese Acad Sci, Beijing Inst Life Sci, Res Network Global Change Biol, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Tian-Zuo,Tian, Qiu-Ying,Wang, Bao-Lan,et al. Genome variations account for different response to three mineral elements between Medicago truncatula ecotypes Jemalong A17 and R108[J]. BMC PLANT BIOLOGY,2014,14. |
| APA | Wang, Tian-Zuo,Tian, Qiu-Ying,Wang, Bao-Lan,Zhao, Min-Gui,&Zhang, Wen-Hao.(2014).Genome variations account for different response to three mineral elements between Medicago truncatula ecotypes Jemalong A17 and R108.BMC PLANT BIOLOGY,14. |
| MLA | Wang, Tian-Zuo,et al."Genome variations account for different response to three mineral elements between Medicago truncatula ecotypes Jemalong A17 and R108".BMC PLANT BIOLOGY 14(2014). |
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| 24885873.pdf（1348KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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