Dissertation Research: Comparative Anatomy and Morphogenesis in the Cephalobinae (Nematoda:Rhabditida)
论文研究:头孢亚科(线虫纲:棒状线虫纲)的比较解剖学和形态发生
基本信息
- 批准号:0206569
- 负责人:
- 金额:$ 0.89万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2002
- 资助国家:美国
- 起止时间:2002-06-01 至 2004-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
A grant has been awarded to Dr. James Baldwin and Mr. Daniel Bumbarger at University of California, Riverside to study the structure and evolution of extracellular feeding appendages in the Cephalobinae, a group of microbial feeding nematodes. The project will describe the ultrastructural anatomy of these structures, classify processes responsible for their assembly and explore patterns in developmental character evolution that are relevant to understanding heterochrony and the evolution of novelty. As these structures are extremely complex on a sub-micrometer spatial scale, a unique application of electron tomography, a three dimensional electron microscopy method, will be utilized to describe the anatomy. Morphogenesis of these structures will be studied with more traditional light microscopy. Comparative work, based primarily on scanning electron micrographs of adult and juvenile morphologies, will be done in collaboration with a molecular phylogenetic lab.It is expected that this project will provide a foundation upon which to ask taxonomic, developmental and evolutionary questions of broad interest. This project will contribute to monographic work already in progress by providing strong hypotheses of character homology with which to re-define taxonomic groupings in a manner that reflects phylogenetic relationships. The proposed research represents novel application of electron tomography that may prove useful for assessing homology in other groups of small invertebrates. Nematodes make excellent models for understanding the evolution of development, particularly where a link between genotypic and phenotypic changes must be understood. Patterns in the complexity and diversity of anterior morphology suggest the presence of developmental modules that could evolve relatively independently from one another. Many mutations in these feeding appendages will likely be viable, which will facilitate identification of developmental regulatory genes responsible for evolutionary changes.
美国加州大学河滨分校(University of California, Riverside)的James Baldwin博士和Daniel Bumbarger先生获得了一项资助,用于研究Cephalobinae(一种微生物摄食线虫)细胞外摄食附属物的结构和进化。该项目将描述这些结构的超微结构解剖,分类负责它们组装的过程,并探索与理解异时性和新颖性进化相关的发育特征进化模式。由于这些结构在亚微米空间尺度上极其复杂,因此将使用电子断层扫描(一种三维电子显微镜方法)的独特应用来描述解剖结构。这些结构的形态发生将用更传统的光学显微镜进行研究。比较工作,主要基于扫描电子显微照片的成人和青少年的形态,将与分子系统发育实验室合作进行。预计该项目将为提出广泛关注的分类学、发育和进化问题提供基础。该项目将通过提供强有力的特征同源性假设,以反映系统发育关系的方式重新定义分类分组,从而有助于已经进行的专题工作。提出的研究代表了电子断层扫描的新应用,可能证明对其他小型无脊椎动物群体的同源性评估有用。线虫为理解发育进化提供了极好的模型,特别是在必须了解基因型和表型变化之间的联系的情况下。前叶形态的复杂性和多样性表明存在相对独立的发育模块。这些进食附属物中的许多突变可能是可行的,这将有助于识别负责进化变化的发育调节基因。
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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James Baldwin其他文献
Editorial review: February 2021
- DOI:
10.1177/16878140211002691 - 发表时间:
2021-04 - 期刊:
- 影响因子:2.1
- 作者:
James Baldwin - 通讯作者:
James Baldwin
A correlational case study on distance from home and attrition of first-time, full-time students
关于离家距离和首次全日制学生流失的相关案例研究
- DOI:
- 发表时间:
2015 - 期刊:
- 影响因子:0
- 作者:
James Baldwin - 通讯作者:
James Baldwin
Long-term patterns of growth and survival of mangrove seedlings in Micronesia
- DOI:
10.1007/s10750-022-05041-1 - 发表时间:
2022-10-27 - 期刊:
- 影响因子:2.500
- 作者:
Katherine C. Ewel;James Baldwin - 通讯作者:
James Baldwin
Evaluating an Upper Respiratory Disease Panel on the Portable MinION Sequencer
在便携式 MinION 测序仪上评估上呼吸道疾病组
- DOI:
- 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
W. Lyon;Zachary K. Smith;Brian K. Grier;James Baldwin;C. Starr - 通讯作者:
C. Starr
James Baldwin的其他文献
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{{ truncateString('James Baldwin', 18)}}的其他基金
Accelerating the Molecular/Morphological Bioinventory of Meiofauna: Marine Nematodes of Mexico's Threatened Gulf of California
加速小型动物群的分子/形态生物清查:墨西哥受威胁的加利福尼亚湾的海洋线虫
- 批准号:
0315829 - 财政年份:2003
- 资助金额:
$ 0.89万 - 项目类别:
Standard Grant
Acquisition of a Transmission Electron Microscope to Support UCR's Accelerated Growth in the Cell/Molecular/Development Biology Program
购买透射电子显微镜以支持 UCR 在细胞/分子/发育生物学项目中的加速发展
- 批准号:
0116267 - 财政年份:2001
- 资助金额:
$ 0.89万 - 项目类别:
Standard Grant
The Evolution of Feeding Morphology in Rhabditida (Nematoda): Extension of the Caenorhabditis Paradigm
杆状线虫摄食形态的演变:杆状线虫范式的扩展
- 批准号:
9318249 - 财政年份:1994
- 资助金额:
$ 0.89万 - 项目类别:
Standard Grant
Secure Storage and Computerization of Records of the University of California, Riverside, Nematode Collection
加州大学河滨分校线虫收藏记录的安全存储和计算机化
- 批准号:
8814287 - 财政年份:1989
- 资助金额:
$ 0.89万 - 项目类别:
Standard Grant
Computerization and Secure Storage of the University of California, Riverside, Nematode Collection
加州大学河滨分校线虫收藏的计算机化和安全存储
- 批准号:
8516948 - 财政年份:1986
- 资助金额:
$ 0.89万 - 项目类别:
Standard Grant
Comparative Detailed Morphology of Cuticle and Phasmids of Heteroderidae (Nematoda) for Phylogenetic Systematics
用于系统发育系统学的异皮科(线虫)角质层和噬粒的比较详细形态学
- 批准号:
8415627 - 财政年份:1985
- 资助金额:
$ 0.89万 - 项目类别:
Standard Grant
Species Composition, Densities and Biomass of Free-Living Soil Nematodes of the Namib and Kalahari Deserts of SouthernAfrica
南部非洲纳米布和卡拉哈里沙漠自由生活土壤线虫的物种组成、密度和生物量
- 批准号:
8408222 - 财政年份:1984
- 资助金额:
$ 0.89万 - 项目类别:
Standard Grant
Comprehensive Assistance to Undergraduate Science Education
本科科学教育综合援助
- 批准号:
7806359 - 财政年份:1978
- 资助金额:
$ 0.89万 - 项目类别:
Standard Grant
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