| Molecular bases for parallel evolution of translucent bracts in an alpine "glasshouse" plant Rheum alexandrae (Polygonaceae) | |
| Liu, Bing-Bing1; Opgenoorth, Lars2; Miehe, Georg2; Zhang, Dong-Yuan3,4; Wan, Dong-Shi1; Zhao, Chang-Ming1; Jia, Dong-Rui1,5,6; Liu, Jian-Quan1 | |
| 2013-03-01 | |
| 发表期刊 | JOURNAL OF SYSTEMATICS AND EVOLUTION
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| 卷号 | 51期号:2页码:134-141 |
| 摘要 | Parallel evolution provides an excellent framework to infer the genetic bases of adaptive traits and understand the importance of natural selection in shaping current biodiversity. The upper leaves of the "glasshouse plants" transform into translucent bracts that show numerous adaptions in alpine habitats. It remains unknown whether similar molecular changes occur under the parallel bract evolution of different "glasshouse" species. In this study, we compared the results on phenotypic and physiological differences and presented the results of cDNA-AFLP analyses of transcriptional changes between translucent bracts and normal leaves in Rheum alexandrae. We also examined the homologous candidate genes with the same expression changes between this species and another "glasshouse" species, R. nobile. We found that bracts of R. alexandrae are similar to those of R. nobile in anatomical features: chloroplasts have degenerated and chlorophyll contents are greatly reduced, which suggests that foliar photosynthetic functions in bracts of both species have been reduced or totally altered. Among the 6000 transcript-derived fragments (TDFs) in bracts and leaves of R. alexandrae, 420 (7%) were differentially expressed (up- or downregulated) between bracts and normal leaves. There were a total of 13 homologous TDFs with the same expression changes between R. alexandrae and the previously studied R. nobile. Except for the two that were not functionally annotated, eight of the homologous TDFs were found to be involved in stress and defense responses whereas the other three were related to photosynthesis. The up- or downregulation of these candidate genes was highly congruent with anatomical characteristics and adaptive functions of the bracts found for "glasshouse" plants. These findings suggested that the "glasshouse" phenotypes may have common molecular bases underlying their parallel evolution of similar adaptive functions and highlighted the importance of the natural selection in producing such phenotypes. |
| 文章类型 | Article |
| 关键词 | Cdna-aflps "glasshouse" Plants Parallel Evolution Rheum Alexandrae |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| DOI | 10.1111/j.1759-6831.2012.00225.x |
| 关键词[WOS] | NOBILE HOOK-F ; MORPHOLOGICAL EVOLUTION ; THOMSON POLYGONACEAE ; STRESS ; GENE ; INFLORESCENCES ; CONVERGENCE ; ADAPTATION ; MUTATIONS ; DIVERSITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| WOS记录号 | WOS:000325127900002 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qibebt.ac.cn/handle/337004/6009 |
| 专题 | 资源植物与环境工程研究组 |
| 作者单位 | 1.Lanzhou Univ, Mol Ecol Grp, State Key Lab Grassland Agroecosyst, Sch Life Sci, Lanzhou 730000, Peoples R China 2.Univ Marburg, Fac Biol & Geol, D-35032 Marburg, Germany 3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Shandong, Peoples R China 4.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Shandong Prov Key Lab Energy Genet, Qingdao 266101, Shandong, Peoples R China 5.Acad Sci Czech Republic, Dept Genet Ecol, Inst Bot, CZ-25243 Pruhonice, Czech Republic 6.Charles Univ Prague, Dept Bot, Fac Sci, CZ-12801 Prague, Czech Republic |
| 推荐引用方式 GB/T 7714 | Liu, Bing-Bing,Opgenoorth, Lars,Miehe, Georg,et al. Molecular bases for parallel evolution of translucent bracts in an alpine "glasshouse" plant Rheum alexandrae (Polygonaceae)[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2013,51(2):134-141. |
| APA | Liu, Bing-Bing.,Opgenoorth, Lars.,Miehe, Georg.,Zhang, Dong-Yuan.,Wan, Dong-Shi.,...&Liu, Jian-Quan.(2013).Molecular bases for parallel evolution of translucent bracts in an alpine "glasshouse" plant Rheum alexandrae (Polygonaceae).JOURNAL OF SYSTEMATICS AND EVOLUTION,51(2),134-141. |
| MLA | Liu, Bing-Bing,et al."Molecular bases for parallel evolution of translucent bracts in an alpine "glasshouse" plant Rheum alexandrae (Polygonaceae)".JOURNAL OF SYSTEMATICS AND EVOLUTION 51.2(2013):134-141. |
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