Flexibility in the structure of spiral flowers and its underlying mechanisms
文献类型：期刊论文
| 作者 | Wang, Peipei2; Liao, Hong2; Zhang, Wengen2; Yu, Xianxian2; Zhang, Rui; Shan, Hongyan; Duan, Xiaoshan2; Yao, Xu2; Kong, Hongzhi
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| 刊名 | NATURE PLANTS
 |
| 出版日期 | 2016 |
| 卷号 | 2期号:1 |
| ISSN号 | 2055-026X |
| DOI | 10.1038/NPLANTS.2015.188 |
| 文献子类 | Article |
| 英文摘要 | Spiral flowers usually bear a variable number of organs, suggestive of the flexibility in structure. The mechanisms underlying the flexibility, however, remain unclear. Here we show that in Nigella damascena, a species with spiral flowers, different types of floral organs show different ranges of variation in number. We also show that the total number of organs per flower is largely dependent on the initial size of the floral meristem, whereas the respective numbers of different types of floral organs are determined by the functional domains of corresponding genetic programmes. By conducting extensive expression and functional studies, we further elucidate the genetic programmes that specify the identities of different types of floral organs. Notably, the AGL6-lineage member NdAGL6, rather than the AP1-lineage members NdFL1/2, is an A-function gene, whereas petaloidy of sepals is not controlled by AP3- or PI-lineage members. Moreover, owing to the formation of a regulatory network, some floral organ identity genes also regulate the boundaries between different types of floral organs. On the basis of these results, we propose that the floral organ identity determination programme is highly dynamic and shows considerable flexibility. Transitions from spiral to whorled flowers, therefore, may be explained by evolution of the mechanisms that reduce the flexibility. |
| 学科主题 | Plant Sciences |
| 出版地 | LONDON |
| 电子版国际标准刊号 | 2055-0278 |
| WOS关键词 | FLORAL ORGAN IDENTITY ; MADS-BOX GENES ; ARABIDOPSIS-THALIANA ; BASAL ANGIOSPERMS ; HOMEOTIC GENES ; PETAL IDENTITY ; NEW-MODEL ; EVOLUTION ; EXPRESSION ; APETALA3 |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000375385300002 |
| 出版者 | NATURE PUBLISHING GROUP |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31125005, 31330007] ; CAS Interdisciplinary Innovation Team |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25087]  |
| 专题 | 植物研究所_系统与进化植物学研究中心_系统与进化植物学研究中心_学位论文 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Peipei,Liao, Hong,Zhang, Wengen,et al. Flexibility in the structure of spiral flowers and its underlying mechanisms[J]. NATURE PLANTS,2016,2(1). |
| APA | Wang, Peipei.,Liao, Hong.,Zhang, Wengen.,Yu, Xianxian.,Zhang, Rui.,...&Kong, Hongzhi.(2016).Flexibility in the structure of spiral flowers and its underlying mechanisms.NATURE PLANTS,2(1). |
| MLA | Wang, Peipei,et al."Flexibility in the structure of spiral flowers and its underlying mechanisms".NATURE PLANTS 2.1(2016). |
入库方式： OAI收割
来源：植物研究所
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