Phylogeny, Biogeography, and Ecological Diversification of Subfamily Grevilleoideae (Proteaceae)
Grevilleoideae 亚科(山龙眼科)的系统发育、生物地理学和生态多样性
基本信息
- 批准号:0516340
- 负责人:
- 金额:$ 33.56万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2005
- 资助国家:美国
- 起止时间:2005-08-01 至 2009-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Plant Subfamily Grevilleoideae (45 genera, ca. 950 species) of the family Proteaceae (Macadamia Nut Family) is important to our understanding of evolutionary events driven by the fragmentation of the ancient supercontinent Gondwana and subsequent changes on its now isolated fragments (including South America, Africa, Madagascar, India, Australia, New Caledonia, New Zealand). The family's fossil history extends to 90 million years ago, prior to most fragmentation events in Gondwana, and the subfamily's far-flung distribution in the Southern Hemisphere (on all major Gondwanan fragments) is generally explained by rafting of ancestors on those fragments. The subfamily is particularly diverse in Australia. It contains 3 of that continent's 10 largest flowering plant genera; Grevillea is third largest (behind Eucalyptus and Acacia), and Banksia has that continent's most extensive fossil record. The subfamily is also a major component of the diverse flora occupying Australia's open, fire-swept vegetation - a vegetation type that expanded substantially after Australia's post-Gondwana isolation. However, despite the significance, we are still without a well-resolved phylogeny (family tree) for the subfamily. The proposed research by Dr Austin Mast at Florida State University, with colleagues Peter Weston and Greg Jordan in Australia and David Cantrill in Sweden, will (1) construct a backbone phylogeny for subfamily Grevilleoideae, relying upon nuclear and chloroplast gene sequence data for 200 or so species; (2) construct fine-scale phylogenies for 8 focal groups of biogeographical, ecological, and paleobotanical significance; (3) improve subfamily classification and circumscriptions of genera, subtribes, and tribes; (4) test the effects of the break-up of Gondwana on the subfamily using the many replicate disjunctions (at least 6 between Australasia and South America) within the context of known fossils; (5) test the effects of widespread aridification on ecological diversification in the Australian members; and (6) test the chronology of at least 6 replicate disjunctions between Australia's diverse Southwest Botanic Province and eastern coastal areas, separated by Australia's central deserts. The project will provide a robust phylogenetic framework for a significant portion of the Proteaceae, and thereby contribute to studies of the origin of Gondwanan and of amphitropical (Northern and Southern hemisphere) disjunctions. The PI maintains an online relational database for the family that stores information about researchers and growers, currently recognized scientific names, images, news items, and links. This project will expand the database to include a literature table with out-of-print texts, a taxonomic synonyms table, a geographic distribution table, a fossil taxa table, and graphics to communicate phylogenetic results and changes in taxonomic delimitations. The results of the research will be summarized in both scientific and layperson's terms. The site is broadly useful to researchers, commercial and hobby growers, educators, and students. The project will train one graduate and two undergraduate students in modern systematic techniques and strengthen scientific collaborations with scientists in Australia, Papua New Guinea, New Caledonia, Fiji, and Vanuatu.
山龙眼科(澳洲坚果科)的植物亚科 Grevilleoideae(45 属,约 950 种)对于我们理解古代超大陆冈瓦纳大陆的分裂及其现在孤立的碎片(包括南美洲、非洲、马达加斯加、印度、澳大利亚、新喀里多尼亚、新西兰)的后续变化所驱动的进化事件非常重要。 该科的化石历史可以追溯到 9000 万年前,早于冈瓦纳大陆的大多数碎裂事件,并且该亚科在南半球(所有主要冈瓦纳碎片上)的广泛分布通常是通过祖先在这些碎片上漂流来解释的。该亚科在澳大利亚尤其多样化。 它包含该大陆 10 个最大的开花植物属中的 3 个属;银桦属第三大(仅次于桉树和金合欢树),而山龙眼属拥有该大陆最广泛的化石记录。 该亚科也是澳大利亚开阔、被火烧毁的植被中多样化植物群的主要组成部分,这种植被类型在澳大利亚后冈瓦纳隔离后大幅扩张。 然而,尽管具有重要意义,我们仍然没有解决该亚科的系统发育(家谱)。佛罗里达州立大学的 Austin Mast 博士与澳大利亚的 Peter Weston 和 Greg Jordan 以及瑞典的 David Cantrill 的同事提出的研究将:(1)依赖 200 多个物种的核和叶绿体基因序列数据,构建 Grevilleoideae 亚科的主干系统发育; (2) 为具有生物地理学、生态学和古植物学意义的 8 个焦点类群构建精细系统发育; (3)完善亚科分类和属、亚族、族的划分; (4) 在已知化石的背景下,使用许多重复的分离(澳大利亚和南美洲之间至少有 6 个)来测试冈瓦纳古陆的分裂对该亚科的影响; (5) 测试大面积干旱对澳大利亚成员生态多样化的影响; (6) 测试澳大利亚多样化的西南植物省和被澳大利亚中部沙漠隔开的东部沿海地区之间至少 6 个重复分离点的年代顺序。 该项目将为山龙眼科的很大一部分提供强大的系统发育框架,从而有助于研究冈瓦纳大陆的起源和两栖性(北半球和南半球)分离。 PI 为该家族维护一个在线关系数据库,其中存储有关研究人员和种植者的信息、当前公认的学名、图像、新闻条目和链接。 该项目将扩展数据库,包括包含绝版文本的文献表、分类同义词表、地理分布表、化石分类单元表以及用于传达系统发育结果和分类界限变化的图形。研究结果将以科学和外行的术语进行总结。该网站对研究人员、商业和业余爱好者、教育工作者和学生广泛有用。 该项目将培训一名研究生和两名本科生现代系统技术,并加强与澳大利亚、巴布亚新几内亚、新喀里多尼亚、斐济和瓦努阿图科学家的科学合作。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Austin Mast其他文献
Austin Mast的其他文献
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{{ truncateString('Austin Mast', 18)}}的其他基金
RAPID: Rapid Creation of a Data Product for the World’s Specimens of Horseshoe Bats and Relatives, a Known Reservoir for Coronaviruses
RAPID:为世界马蹄蝠及其亲属(已知的冠状病毒储存库)样本快速创建数据产品
- 批准号:
2033973 - 财政年份:2020
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Standard Grant
ABI DEVELOPMENT: Notes from Nature: Advancing a Next Generation Citizen Science Platform For Biocollection Transcription
ABI 开发:《自然》笔记:推进下一代生物收集转录公民科学平台
- 批准号:
1458550 - 财政年份:2015
- 资助金额:
$ 33.56万 - 项目类别:
Standard Grant
Digitization TCN: Collaborative Research: The Key to the Cabinets: Building and Sustaining a Research Database for a Global Biodiversity Hotspot
数字化 TCN:协作研究:内阁的关键:为全球生物多样性热点建立和维护研究数据库
- 批准号:
1410288 - 财政年份:2014
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DISSERTATION RESEARCH: Extending anchored phylogenomics into plants with a case study of beaksedge (tribe Rhynchosporeae; Cyperaceae) diversification in the New World
论文研究:通过新世界喙莎草(Rhynchosporeae 部落;莎草科)多样化的案例研究将锚定系统发育学扩展到植物中
- 批准号:
1311150 - 财政年份:2013
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$ 33.56万 - 项目类别:
Standard Grant
Collaborative Research: Imaging the Tall Timbers Research Station's Biological Research Collections
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- 批准号:
0956372 - 财政年份:2010
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Collaborative Research: The Deep South Plant Specimen Imaging Project
合作研究:南方腹地植物标本成像项目
- 批准号:
0646222 - 财政年份:2007
- 资助金额:
$ 33.56万 - 项目类别:
Continuing Grant
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