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| Comparative Flower and Inflorescence Organogenesis among Genera of Betulaceae: Implications for Phylogenetic Relationships | |
Zhu, Junyi; Zhang, Lifan; Ren, Baoqing1; Chen, Min2; Li, Ruiqi2; Zhou, You; Liang, Yu; Li, Jianhua3; Chen, Zhiduan2
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| 2018 | |
| 发表期刊 | BOTANICAL REVIEW
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| ISSN | 0006-8101 |
| 卷号 | 84期号:1页码:79-98 |
| 摘要 | Betulaceae have simple flowers but complex inflorescences. Recent phylogenetic analyses using molecular data have produced robust phylogenetic trees of Betulaceae. In this study, we evaluated the phylogenetic value of comparative organogenetic data of reproductive organs in the context of molecular phylogenies. Flower and inflorescence developmental processes of 21 species from all six genera in Betulaceae were documented with scanning electron microscopy. In each pistillate cyme, there are one primary bract, two secondary bracts, and two or three flowers in the six genera; only in Alnus are there two tertiary bracts on the abaxial side. The pistillate flower of all genera but Alnus has tepal primordia. Two tepals stop developing early on, resulting in the lack of tepals in mature flowers of Betula; while the tepals are initiated from a common circular primordium at the base of pistil in Corylus, Ostryopsis, Carpinus, and Ostrya, and the developed tepals with irregular shape and unstable number of lobes are adnate to the top of the pistil. In staminate organogenesis, each cyme has one primary bract and three flowers in all genera; two secondary bracts are only present in Alnus, Betula, and Corylus. Staminate flowers have no tepals except in Alnus and Betula, and exhibit high variation in number of stamens among genera. The number of secondary and tertiary bracts in each pistillate and staminate cyme, as well as the presence of tepals in pistillate and staminate flowers was clarified in all genera. Micro-morphological characters were used to infer the phylogenetic relationships of genera and sections of Betulaceae. Our analyses support the division of two subfamilies: Betuloideae (Alnus and Betula) and Coryloideae (Corylus, Carpinus, Ostrya, and Ostryopsis), and three tribes: Betuleae (Alnus and Betula), Coryleae (Corylus), and Carpineae (Carpinus, Ostrya, and Ostryopsis). The results agree with those from molecular phylogenetic studies, and suggest that micro-morphological characters are phylogenetically informative in Betulaceae, and reproductive organs of Betulaceae have evolved in the direction of reduction in bracts and tepals. |
| 关键词 | Betulaceae Flower Cyme Inflorescence Organogenesis Primordia Secondary bract Tertiary bract Tepals SEM Phylogeny |
| 学科领域 | Plant Sciences |
| DOI | 10.1007/s12229-017-9195-0 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | PALAEOCARPINUS BETULACEAE ; SEQUENCES ; HAMAMELIDAE ; ANGIOSPERMS ; CARPINUS ; PLANTS ; CLASSIFICATION ; CHLOROPLAST ; SYSTEMATICS ; CONGRUENCE |
| WOS记录号 | WOS:000428261600004 |
| 出版者 | SPRINGER |
| 文献子类 | Article |
| 出版地 | NEW YORK |
| EISSN | 1874-9372 |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [NNSF 31170180, NNSF 31270268] ; CAS International Research & Education Development Program [SAJC201315] ; MOST Science and Technology Basic Work [2013FY112100] |
| 作者邮箱 | swx0527@163.com ; li@hope.edu ; zhiduan@ibcas.ac.cn |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/20443 |
| 专题 | 系统与进化植物学国家重点实验室 |
| 作者单位 | 1.Tonghua Normal Univ, Coll Life Sci, Tonghua 134002, Peoples R China 2.Taiyuan Taishan Bot Garden, Construct & Preparat Off, Taiyuan 030025, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 10093, Peoples R China 4.Hope Coll, Dept Biol, Holland, MI 49423 USA |
| 推荐引用方式 GB/T 7714 | Zhu, Junyi,Zhang, Lifan,Ren, Baoqing,et al. Comparative Flower and Inflorescence Organogenesis among Genera of Betulaceae: Implications for Phylogenetic Relationships[J]. BOTANICAL REVIEW,2018,84(1):79-98. |
| APA | Zhu, Junyi.,Zhang, Lifan.,Ren, Baoqing.,Chen, Min.,Li, Ruiqi.,...&Chen, Zhiduan.(2018).Comparative Flower and Inflorescence Organogenesis among Genera of Betulaceae: Implications for Phylogenetic Relationships.BOTANICAL REVIEW,84(1),79-98. |
| MLA | Zhu, Junyi,et al."Comparative Flower and Inflorescence Organogenesis among Genera of Betulaceae: Implications for Phylogenetic Relationships".BOTANICAL REVIEW 84.1(2018):79-98. |
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