EAGER: Resolving the Evolutionary History of the Sunflower Family in the Face of Rampant Gene and Genome Duplications

EAGER：面对猖獗的基因和基因组复制，解决向日葵家族的进化史

基本信息

批准号：
1745197
负责人：
Jennifer Mandel
金额：
$ 15万
依托单位：
University of Memphis
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-08-01 至 2022-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1745197&HistoricalAwards=false
关键词：
EAGER Resolving Evolutionary History Sunflower

项目摘要

Despite the widespread occurrence and cultivation of members of the sunflower family, evolutionary relationships within the group are poorly understood. The lack of knowledge has hampered biological research in the family. This project advances the understanding of the genealogical relationships among sunflowers, while also investigating the reasons that have led to its great success. The sunflower family contains more than 25,000 species, representing 10% of all flowering plants on Earth today. Species within the sunflower family are important agricultural crops including sunflower, lettuce, safflower, artichoke, and chicory. The family also includes some of the world's most noxious weeds (e.g., knapweeds, thistles). Many other species in the group occur in areas of the world that are threatened with high extinction rates. This project will generate genomic data to help explain the role of genome duplication in the evolutionary success of the family. The project will train students in plant systematics and modern methods of data collection and analysis. Additionally, the project will produce educational tools for use by middle and high school teachers. This project will use a phylogenomics approach to investigate the role that large-scale gene and genome duplications have played in the diversification of the sunflower family (Compositae) and what confounding role this may play in resulting discordance among phylogenies produced from genome-scale data. The proposed research will generate genomic and transcriptomic data to examine how large-scale gene duplications influence phylogeny reconstruction. This research will provide transformative information that may be applicable to other large, diverse lineages of organisms especially when strong discordance amongst gene tree and species tree methods is reported and where large-scale or whole genome duplications are found. The data will shed light on the influence of duplications on both lineage diversity and potential causes of discordance and provide a first step toward understanding evolutionary relationships in the face of large amounts of gene duplication.

尽管向日葵家族的成员广泛存在和栽培，但对该群体内部的进化关系知之甚少。知识的缺乏阻碍了家庭中的生物学研究。该项目增进了对向日葵之间谱系关系的理解，同时也调查了其取得巨大成功的原因。向日葵科包含超过 25,000 个物种，占当今地球上所有开花植物的 10%。向日葵科的物种是重要的农作物，包括向日葵、生菜、红花、朝鲜蓟和菊苣。该科还包括一些世界上最有毒的杂草（例如矢车菊、蓟）。该组中的许多其他物种出现在世界上面临高灭绝率威胁的地区。该项目将生成基因组数据，以帮助解释基因组复制在家庭进化成功中的作用。该项目将培训学生植物系统学以及现代数据收集和分析方法。此外，该项目还将生产供初高中教师使用的教育工具。该项目将使用系统发育学方法来研究大规模基因和基因组复制在向日葵科（菊科）多样化中所发挥的作用，以及这可能在基因组规模数据产生的系统发育之间产生不一致的情况中发挥什么混淆作用。拟议的研究将生成基因组和转录组数据，以研究大规模基因重复如何影响系统发育重建。这项研究将提供可能适用于其他大型、多样化的生物谱系的变革性信息，特别是当报告基因树和物种树方法之间存在强烈不一致以及发现大规模或全基因组重复时。这些数据将揭示重复对谱系多样性的影响和不一致的潜在原因，并为理解大量基因重复时的进化关系迈出了第一步。

项目成果

期刊论文数量（17）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Phylogenomics of Perityleae (Compositae) provides new insights into morphological and chromosomal evolution of the rock daisies

Perityleae（菊科）的系统发育组学为岩石雏菊的形态和染色体进化提供了新的见解

DOI：
10.1111/jse.12711
发表时间：
2020-11-01
期刊：
Journal of Systematics and Evolution
影响因子：
3.7
作者：
Isaac H. LICHTER;William A. Freyman;C. Siniscalchi;J. M;el;el;A. Castro‐Castro;Gabriel Johnson;B. G. Baldwin
通讯作者：
B. G. Baldwin

Photosynthesis metabolism in the Compositae: Current knowledge and future directions

菊科植物的光合作用代谢：当前知识和未来方向

DOI：
10.1002/tax.12426
发表时间：
2021-01-11
期刊：
Taxon
影响因子：
3.4
作者：
C. Siniscalchi;R. Edwards;J. Gómez;E. Moore;J. M;el;el
通讯作者：
el

Nuclear and plastid DNA phylogeny of tribe Cardueae (Compositae) with Hyb-Seq data: A new subtribal classification and a temporal diversification framework

利用 Hyb-Seq 数据对菊科部落的核和质体 DNA 系统发育进行研究：一种新的亚部落分类和时间多样化框架

DOI：
10.1016/j.ympev.2019.05.001
发表时间：
2019-08
期刊：
Molecular Phylogenetics and Evolution
影响因子：
4.1
作者：
Herrando;Calleja, Juan Antonio;Galbany;Garcia;Liu, Jian;López;López;Mandel, Jennifer R.;Massó, Sergi;Montes;et al
通讯作者：
et al

Phylogenomics of the hyperdiverse daisy tribes: Anthemideae, Astereae, Calenduleae, Gnaphalieae, and Senecioneae

高度多样化雏菊族群的系统发育学：Anthemideae、Astereae、Calenduleae、Gnaphalieae 和 Senecioneae