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NSF Postdoc Fellowship in Biology FY 2017: Convergent evolution of biotic pollination in wind-pollinated angiosperm linages: functional and genomic exploration of a rare transition

2017 财年 NSF 生物学博士后奖学金：风授粉被子植物谱系中生物授粉的趋同进化：罕见转变的功能和基因组探索

基本信息

批准号：
1711391
负责人：
Elliot Gardner
金额：
$ 13.8万
依托单位：
Gardner Elliot
依托单位国家：
美国
项目类别：
Fellowship Award
财政年份：
2018
资助国家：
美国
起止时间：
2018-01-01 至 2020-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1711391&HistoricalAwards=false
关键词：
NSF Postdoc Fellowship Biology FY

项目摘要

This is an NSF Postdoctoral Research Fellowship in Biology, under the program Research Using Biological Collections. The fellow, Elliot Gardner, is conducting research and receiving training that utilizes biological collections in innovative ways, and is being mentored by two sponsoring scientists at two host institutions: Andrew Hipp at The Morton Arboretum and Robert Raguso at Cornell University. The fellow's research project uses field studies, DNA sequencing of museum collections, and chemical analysis of floral scent to investigate convergent evolution of animal pollination of plants, specifically the oak, mulberry, and palm families. Transitions from wind to animal pollination are considered rare but likely represent an important pattern of flowering plant evolution. Although not closely related, these diverse plant families have all evolved similar dense spikes of tiny flowers that use scent to attract small insect pollinators, and these insects often use the flowers as brood sites. The fellow's research challenges some assumptions about the evolution of animal pollination, providing an important foundation for future studies on pollination transitions and, more generally, convergent evolution. The project is improving our understanding of the biology of diverse tropical trees - including important but underutilized crops - and promoting international cooperation with researchers in developing countries. The fellow is contributing to public education and outreach programs, as well as research opportunities for high-school and undergraduate students.This project will produce a multidimensional picture of convergent transitions from wind to insect pollination in three divergent lineages. Data from field studies, herbarium specimens, and chemical (GC-MS) analysis of floral scent will support ancestral state reconstructions and phylogenetic comparative analyses to reveal patterns associated with transitions. Targeted sequencing of the entire terpene synthase gene family - involved in floral scent production - will reveal gene duplication and loss as well as molecular signatures of selection associated with pollination transitions. Using herbarium specimens will enable dense sampling within the target clades, highlighting the potential of museum collections for targeted next-generation sequencing. The project will generate a trait data base and genomic resources for hundreds of taxa, and clarify phylogenetic relationships in three important clades. Results will provide insight into a remarkable pattern of convergent evolution, and may shed light on the emergence of biotic pollination in ancient lineages such as cycads, whose fragrant cones resemble the convergent pattern described here. The fellow is teaching a portion of an advanced phylogenetics course, and engaging in outreach to the public and younger students through the host institution.

这是NSF生物学博士后研究奖学金，项目是使用生物收藏进行研究。这位名叫埃利奥特·加德纳的研究员正在进行研究，并接受以创新方式利用生物收藏的培训，并由两家主办机构的两名赞助科学家提供指导：莫顿植物园的安德鲁·希普和康奈尔大学的罗伯特·拉古索。这位研究员的研究项目利用实地考察、博物馆藏品的DNA测序和花香的化学分析来研究植物，特别是橡树、桑树和棕榈科植物的动物授粉的趋同进化。从风到动物授粉的转变被认为是罕见的，但可能代表了开花植物进化的一种重要模式。尽管没有密切的亲缘关系，但这些不同的植物家族都进化出了相似的密集的小花穗，这些小花利用气味来吸引小昆虫传粉者，这些昆虫经常把花作为孵化地点。这位研究员的研究挑战了关于动物授粉进化的一些假设，为未来研究授粉过渡以及更广泛的收敛进化提供了重要的基础。该项目正在提高我们对各种热带树木生物学的理解，包括重要但未得到充分利用的作物，并促进与发展中国家研究人员的国际合作。这位研究员正在为公共教育和推广计划做出贡献，以及为高中生和本科生提供研究机会。这个项目将产生一幅多维图像，展示三个不同谱系中从风到昆虫授粉的汇聚过渡。来自实地研究、植物标本和花香化学(GC-MS)分析的数据将支持祖先状态的重建和系统发育的比较分析，以揭示与过渡相关的模式。对整个萜烯合酶基因家族进行定向测序--参与花香产生--将揭示基因复制和丢失，以及与授粉过渡相关的选择的分子特征。使用标本馆标本将能够在目标分支内进行密集采样，突出博物馆收藏品用于定向下一代测序的潜力。该项目将为数百个分类群建立一个特征数据库和基因组资源，并澄清三个重要分支的系统发育关系。这些结果将提供对汇聚进化的显著模式的洞察，并可能有助于揭示古代谱系中生物授粉的出现，例如苏铁，其芳香的球果类似于这里描述的汇聚模式。这位研究员正在教授一门高级系统发育课程的一部分，并通过主办机构与公众和年轻学生进行接触。

项目成果

期刊论文数量（12）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Artocarpus bergii (Moraceae), a New Species in the Breadfruit Clade from the Moluccas

Artocarpus bergii（桑科），摩鹿加群岛面包果分支中的一个新物种

DOI：
10.1600/036364421x16128061189387
发表时间：
2021
期刊：
Systematic Botany
影响因子：
1
作者：
Gardner, Elliot M.;Arifiani, Deby;Zerega, Nyree J.C.
通讯作者：
Zerega, Nyree J.C.

Two new species of Artocarpus (Moraceae) from Thailand and Vietnam

泰国和越南的木香属（桑科）两个新种

DOI：
10.11646/phytotaxa.453.3.8
发表时间：
2020
期刊：
Phytotaxa
影响因子：
1.1
作者：
GARDNER, ELLIOT M.;CHAVEERACH, ARUNRAT;SUDMOON, RUNGLAWAN;ZEREGA, NYREE J.C.
通讯作者：
ZEREGA, NYREE J.C.

Repeated parallel losses of inflexed stamens in Moraceae: Phylogenomics and generic revision of the tribe Moreae and the reinstatement of the tribe Olmedieae (Moraceae)