The evolution of flower synorganization in Consolida (Ranunculaceae)

毛茛科植物花协同组织的演化

• 批准号: 186964220
• 负责人: Professorin Dr. Susanne Sabine Renner
• 金额: --
• 依托单位: Department of Biology
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/186964220?language=en
• 关键词: evolution; flower; synorganization; Consolida; Ranunculaceae

The Delphinieae clade of the Ranunculaceae is unusual among basal eudicots in having zygomorphic flowers. Delphinieae consist of the species-rich Aconitum and Delphinium (ca. 300 spp. each) and the much smaller Consolida (40-50 sp., including Aconitella). Consolida is also the only angiosperm in which floral synorganization (of the dorsal petals) occurs in conjunction with spiral phyllotaxis, two features normally incompatible with each other. The potential monophyly of Consolida and precise relationship to Delphinium are untested. This proposal is seeking support for a phylogeny that will sample up to 100 species of Consolida and Delphinium (and a few Aconitum as outgroups) for nuclear and chloroplast DNA regions to resolve the evolution of petal synorganization in this clade (sequencing can largely rely on herbarium material as shown in a pilot study and material is at hand in Munich). Details of floral development will be studied in 6-10 species selected to represent different flower types. The main questions to be answered are (i) How do spiral phyllotaxis, zygomorphy, and petal synorganization become establish and interact during development? and (ii) What is (are) the evolutionary trajectory(-ies) of perianth evolution in the the Delphinium/Consolida clade?

毛茛科的翠雀花族分支在基生真双子叶植物中是不寻常的，具有左右对称的花。Delphinieae由物种丰富的翠雀属和翠雀属组成。300种和小得多的Consolida（40-50种，包括隐孢子虫属）。Consolida也是唯一的被子植物，其花的合生组织（背花瓣）与螺旋叶序同时发生，这两个特征通常彼此不相容。Consolida的潜在单系性和与Delphinium的精确关系尚未得到验证。该提案正在寻求对系统发育的支持，该系统发育将对多达100种Consolida和Delphinium（以及一些Aconitum作为外群）进行细胞核和叶绿体DNA区域的采样，以解决该进化枝中花瓣合生组织的进化（测序可以在很大程度上依赖于植物标本材料，如试点研究所示，材料已在慕尼黑手头）。花发育的细节将在6-10个物种中进行研究，以代表不同的花型。要回答的主要问题是（i）如何螺旋叶序，左右对称，花瓣合生成为建立和相互作用在发展过程中？和（ii）在翠雀/Consolida分支中花被演化的演化轨迹是什么？