DISSERTATION RESEARCH: Effect of niche conservation versus niche evolution on diversification rate in the Neotropical plant genus Citharexylum (Verbenaceae)
论文研究:生态位保护与生态位进化对新热带植物属 Citharexylum(马鞭草科)多样化率的影响
基本信息
- 批准号:1500919
- 负责人:
- 金额:$ 2.01万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-07-01 至 2018-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The Neotropics are estimated to house more seed plant species than the African, Asian, and Oceanic tropics combined. Recent studies of diverse plant groups have noted that closely related species often occupy similar types of habitats despite being geographically separated. This observation led to the hypothesis that dispersal is common in many groups and that migration to new, but suitable habitats can spur diversification. Adaptations can also stimulate radiations within plant groups, though less is known about the contributions of these seemingly rare but important evolutionary events to biodiversity. This research will focus on the systematics of the Neotropical plant genus Citharexylum (Verbenaceae), and the relative contributions of dispersal and adaptation to species diversification in the group. Studies that provide an understanding of how organisms have dispersed and evolved in the past provide the necessary historical context to predict how these same groups are likely to disperse and diversify in the future. One graduate student will be trained and undergraduates will be introduced to a broad range of laboratory and analytical methods. The research will also enhance international scientific research infrastructure by establishing collaborations in several South and Central American countries. .The object of this project is to understand how biogeographic events (migration/colonization versus adaptation) influence diversification in Neotropical plant lineages. This study will elucidate the biogeographic history of the plant genus Citharexylum, a lineage of trees and shrubs that originated in and diversified into multiple biomes of the Neotropics. A time-calibrated phylogeny of Citharexylum with near-complete sampling will be inferred using multiple, independent loci. Phylogenetic inference will take a two-tiered approach using both high-throughput and traditional sequencing methods to produce a robust phylogeny. This framework will then be used to test evolutionary and biogeographic hypotheses about the genus. Statistical analyses will reconstruct ancestral ranges/climatic niches and detect the placement and magnitude of diversification rate shifts in the phylogeny. Additionally, the phylogeny will be dated using a fossil-calibrated phylogeny of the inclusive group Lamiales allowing assessment of migrations and adaptive events with known geologic and climatic events in the history of the Neotropics. This work will help build the foundation of knowledge surrounding the timing and magnitude of diversification events as well as the directionality of niche evolution in the New World.
据估计,新热带地区的种子植物种类比非洲、亚洲和大洋热带地区的总和还要多。最近对不同植物群的研究指出,尽管地理上相互隔开,但密切相关的物种往往占据着相似类型的栖息地。这一观察结果导致了一种假设,即扩散在许多种群中很常见,迁徙到新的但合适的栖息地可以刺激多样性。适应也可以刺激植物群体内的辐射,尽管人们对这些看似罕见但重要的进化事件对生物多样性的贡献知之甚少。本研究将集中于新热带植物(马鞭草科)的系统学研究,以及种群内扩散和适应对物种多样性的相对贡献。了解生物体在过去是如何分散和进化的研究,为预测这些相同的种群在未来可能如何分散和多样化提供了必要的历史背景。将对一名研究生进行培训,并向本科生介绍广泛的实验室和分析方法。这项研究还将通过在几个南美洲和中美洲国家建立合作来加强国际科学研究基础设施。本项目的目的是了解生物地理事件(迁徙/殖民与适应)如何影响新热带植物谱系的多样性。这项研究将阐明蜡梅属植物的生物地理史,这是一种乔木和灌木的谱系,起源于新热带地区,并多样化为多种生物群。利用多个独立的基因座,可以推断出近乎完全采样的时间校准的花椒的系统发育。系统发育推断将采取两层方法,同时使用高通量和传统测序方法,以产生强大的系统发育图。然后,这个框架将被用来测试关于该属的进化和生物地理假说。统计分析将重建祖先范围/气候生态位,并检测多样化比率变化在系统发育中的位置和大小。此外,还将使用经化石校准的拉米亚目种群的系统发展史来确定系统发展的日期,以便根据新热带地区历史上已知的地质和气候事件来评估迁徙和适应事件。这项工作将有助于建立围绕多样化活动的时机和规模以及新世界利基演变的方向性的知识基础。
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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Richard Olmstead其他文献
Female vulnerability to inflammation-induced reward deficits across the lifespan
- DOI:
10.1016/j.bbi.2024.01.116 - 发表时间:
2023-11-01 - 期刊:
- 影响因子:
- 作者:
Chloe Boyle;Joshua Hyong-Jin Cho;Naomi Eisenberger;Richard Olmstead;Elizabeth Breen;Michael Irwin - 通讯作者:
Michael Irwin
Female vulnerability to inflammation-induced depressive mood and decreased reward responsivity as a function of menopausal status
女性易受炎症诱发的抑郁情绪及奖赏反应性降低的影响,且这种易感性与绝经状态相关 。
- DOI:
10.1016/j.bbi.2024.12.099 - 发表时间:
2024-11-01 - 期刊:
- 影响因子:7.600
- 作者:
Chloe Boyle;Joshua Hyong-Jin Cho;Naomi Eisenberger;Richard Olmstead;Elizabeth Breen;Michael Irwin - 通讯作者:
Michael Irwin
Early Childhood Exposure to Parental Nudity and Scenes of Parental Sexuality (“Primal Scenes”): An 18-Year Longitudinal Study of Outcome
- DOI:
10.1023/a:1018736109563 - 发表时间:
1998-08-01 - 期刊:
- 影响因子:2.900
- 作者:
Paul Okami;Richard Olmstead;Paul R. Abramson;Laura Pendleton - 通讯作者:
Laura Pendleton
The role of subjective and objective sleep disturbance for transcriptional inflammatory signaling in older adults
- DOI:
10.1016/j.bbi.2022.07.037 - 发表时间:
2022-11-01 - 期刊:
- 影响因子:
- 作者:
Dominique Piber;Joshua Cho;Richard Olmstead;Michael Irwin - 通讯作者:
Michael Irwin
Abstract # 3079 Sleep deprivation, inflammation and facial emotion recognition in older adults
- DOI:
10.1016/j.bbi.2018.11.208 - 发表时间:
2019-02-01 - 期刊:
- 影响因子:
- 作者:
Dominique Piber;Naomi I. Eisenberger;Richard Olmstead;Joshua Hyong-Jin Cho;Teresa E. Seeman;Elizabeth C. Breen;Steve W. Cole;Ellora Karmarkar;Nina Sadeghi;Michael R. Irwin - 通讯作者:
Michael R. Irwin
Richard Olmstead的其他文献
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{{ truncateString('Richard Olmstead', 18)}}的其他基金
DISSERTATION RESEARCH: Biome conservatism in Neotropical plant diversification? A case study in Bignoniaceae
论文研究:新热带植物多样化中的生物群落保守主义?
- 批准号:
1500905 - 财政年份:2015
- 资助金额:
$ 2.01万 - 项目类别:
Standard Grant
OPUS: Lamiales - a synthesis of phylogeny, biology, biogeography, and classification
作品:唇形目 - 系统发育、生物学、生物地理学和分类的综合
- 批准号:
1353761 - 财政年份:2014
- 资助金额:
$ 2.01万 - 项目类别:
Standard Grant
DISSERTATION RESEARCH: Multi-locus molecular phylogenetics of the genus Buddleja and insights into inflorescence evolution and historical biogeography
论文研究:醉鱼属的多位点分子系统发育学以及对花序进化和历史生物地理学的见解
- 批准号:
1311111 - 财政年份:2013
- 资助金额:
$ 2.01万 - 项目类别:
Standard Grant
Support for travel to the 18th International Botanical Congress- to be held July 23 - 30, 2011 in Melbourne, Australia
支持前往参加将于 2011 年 7 月 23 日至 30 日在澳大利亚墨尔本举行的第 18 届国际植物学大会
- 批准号:
1120802 - 财政年份:2011
- 资助金额:
$ 2.01万 - 项目类别:
Standard Grant
ACCOMPLISHED-BASED RENEWAL: Molecular systematics of Verbenaceae and resolving their placement in Lamiales
基于完成的更新:马鞭草科的分子系统学并解决它们在唇形目中的位置
- 批准号:
1020369 - 财政年份:2010
- 资助金额:
$ 2.01万 - 项目类别:
Standard Grant
Collaborative Research: The Online Consortium of Pacific Northwest Herbaria Expanded to Include Taxonomically Diverse Specimens from Large and Small Regional Collections
合作研究:太平洋西北植物标本馆在线联盟扩大规模,纳入来自大小区域收藏的分类学多样化标本
- 批准号:
0956414 - 财政年份:2010
- 资助金额:
$ 2.01万 - 项目类别:
Continuing Grant
DISSERTATION RESEARCH: Untangling the Evolutionary History of the Verbena Complex (Verbenaceae): Hybridization, Introgression, and Polyploidization
论文研究:解开马鞭草复合体(马鞭草科)的进化史:杂交、基因渗入和多倍体化
- 批准号:
0710026 - 财政年份:2007
- 资助金额:
$ 2.01万 - 项目类别:
Standard Grant
Molecular Systematics of the Verbenaceae
马鞭草科的分子系统学
- 批准号:
0542493 - 财政年份:2006
- 资助金额:
$ 2.01万 - 项目类别:
Standard Grant
AToL: ATOL COLLABORATIVE RESEARCH: The Angiosperm Tree of Life: Resolving the Trunk of the Tree and 12 of its Thorniest Nodes
AToL:ATOL 合作研究:被子植物生命树:解析树干及其 12 个最棘手的节点
- 批准号:
0431184 - 财政年份:2004
- 资助金额:
$ 2.01万 - 项目类别:
Standard Grant
DISSERTATION RESEARCH: Molecular Systematics and Evolution in Castilleja and Subtribe Castillejinae (Orobanchaceae).
论文研究:Castilleja 和 Subtribe Castillejinae(列当科)的分子系统学和进化。
- 批准号:
0412653 - 财政年份:2004
- 资助金额:
$ 2.01万 - 项目类别:
Standard Grant
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