| Transcriptomic profiling of mature embryo from an elite super-hybrid rice lyp9 and its parental lines | |
| Ge, Xiaomeng1,2; Chen, Weihua1; Song, Shuhui1,2; Wang, Weiwei1,2; Hu, Songnian1; Yu, Jun1 | |
| 刊名 | Bmc plant biology
 |
| 2008-11-11 | |
| 卷号 | 8页码:20 |
| ISSN号 | 1471-2229 |
| DOI | 10.1186/1471-2229-8-114 |
| 通讯作者 | Hu, songnian(husn@big.ac.cn) |
| 英文摘要 | Background: the mature embryo of rice (oryza sativa, l.) is a synchronized and integrated tissue mass laying the foundation at molecular level for its growth, development, and differentiation toward a developing and ultimately a mature plant. we carried out an est (expressed-sequence-tags)-based transcriptomic study, aiming at gaining molecular insights into embryonic development of a rice hybrid triad-an elite hybrid rice lyp9 and its parental lines (93-11 and pa64s)-and possible relatedness to heterosis. results: we generated 27,566 high-quality ests from cdna libraries made from mature rice embryos. we classified these ests into 7,557 unigenes (2,511 contigs and 5,046 singletons) and 7,250 (95.9%) of them were annotated. we noticed that the high-abundance genes in mature rice embryos belong to two major functional categories, stress-tolerance and preparation-for-development, and we also identified 191 differentially-expressed genes (general chi-squared test, p-value <= 0.05) between lyp9 and its parental lines, representing typical expression patterns including over-dominance, high- and low-parent dominance, additivity, and under-dominance. in lyp9, the majority of embryo-associated genes were found not only abundantly and specifically enriched but also significantly up-regulated. conclusion: our results suggested that massively strengthening tissue-(or stage-) characteristic functions may contribute to heterosis rather than a few simple mechanistic explanations at the individual gene level. in addition, the large collection of rice embryonic ests provides significant amount of data for future comparative analyses on plant development, especially for the important crops of the grass family. |
| WOS关键词 | DIFFERENTIALLY EXPRESSED GENES ; OVERDOMINANT EPISTATIC LOCI ; TAG SAMPLING EXPERIMENTS ; ORYZA-SATIVA ; INBREEDING DEPRESSION ; DRAFT SEQUENCE ; GRAIN-YIELD ; WEB TOOL ; HETEROSIS |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| 出版者 | BIOMED CENTRAL LTD |
| WOS记录号 | WOS:000261407300001 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2387221 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Hu, Songnian |
| 作者单位 | 1.Chinese Acad Sci, Beijing Inst Genom, CAS Key Lab Genome Sci & Informat, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ge, Xiaomeng,Chen, Weihua,Song, Shuhui,et al. Transcriptomic profiling of mature embryo from an elite super-hybrid rice lyp9 and its parental lines[J]. Bmc plant biology,2008,8:20. |
| APA | Ge, Xiaomeng,Chen, Weihua,Song, Shuhui,Wang, Weiwei,Hu, Songnian,&Yu, Jun.(2008).Transcriptomic profiling of mature embryo from an elite super-hybrid rice lyp9 and its parental lines.Bmc plant biology,8,20. |
| MLA | Ge, Xiaomeng,et al."Transcriptomic profiling of mature embryo from an elite super-hybrid rice lyp9 and its parental lines".Bmc plant biology 8(2008):20. |
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