DISSERTATION RESEARCH: Phylogeny of Caesalpinioid Legumes from the Guyana Shield

论文研究：圭亚那地盾云杉类豆科植物的系统发育

• 批准号: 0408041
• 负责人: Patrick Herendeen
• 金额: $ 1.2万
• 依托单位: George Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-05-15 至 2006-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0408041&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Phylogeny; Caesalpinioid; Legumes

The legume family (650 genera/~18,000 species) is the third largest family of flowering plants and the second most economically important family. The subfamily Caesalpinioideae has received relatively little attention and recent morphological and molecular evidence suggests this subfamily may not be a natural group. Part of the reason for the uncertain status and relationships of the members of the Caesalpinioideae is that many of the genera and their species are poorly known and rarely collected. The study of plant taxonomy and phylogeny is inherently dependent on field work, many times in remote areas, which is the case for caesalpinioid legumes in general, and in this study in particular. The research outlined in this proposal will provide monographic revisions and species-level phylogenetic hypotheses for a group of poorly known caesalpinioid legume genera that are endemic to the Guiana Shield area of South America (Venezuela, Suriname, French Guiana, and Guyana). Funding from the NSF DDIG program will allow Ms. Redden to travel to museums in Venezuela and Europe to examine herbarium material that is needed for this study, and to conduct field work in southern Venezuela to collect plant specimens, dried leaf samples, and pickled flowers for study. A total of five weeks will be spent in the Sierra de la Neblina area of Venezuela. While in Venezuela, Ms. Redden will also visit five herbaria to gather information on plant characteristics and distribution for the monographic and phylogenetic aspects of this study. The primary objectives Ms. Reddens dissertation are to provide a systematic revision of five key genera of the group (Dicymbe, Paloue, Paloveopsis, Heterostemon and Elizabetha) and to study morphological evolution, especially floral morphology, in this group.Working directly with Venezuelan scientists, students, and local communities is an essential part of this study. These activities will enhance collaboration with Venezuelan botanists, including students, and will contribute to broader studies of relationships within Caesalpinioideae. While conducting research in the Venezuelan herbaria Ms. Redden will examine and photograph specimens, verify identifications, and identify unknown material wherever possible. In addition to locating important specimens for her research, Ms. Reddens herbarium work in Venezuela will help to improve their collections. We have been working with Dr. Basil Sterigos with the Universidad Nacional Experimental de los Llanos Occidentales Ezequil Zamora(UNELLEZ) in planning the field work. Dr. Stergios and his student will accompany Ms. Redden on the field expedition. This expedition will not only contribute vital information to the dissertation project, it will also document biological diversity in Venezuela. Voucher specimens will be made for the Smithsonian Institution (US), Herbario Universitario BioCentro-UNELLEZ (PORT), and Herbario Nacional de Venezuela (VEN). In addition to the plant collections, all other information will also be shared with UNELLEZ. Photographs, GPS coordinates, field notebooks, and other data also will be copied and left with UNELLEZ.

豆科植物家族（650属/〜18,000种）是开花植物的第三大家族，也是第二重要的家族。 亚科剖腹产科的关注相对较少，最近的形态学和分子证据表明，该亚家族可能不是天然群体。 凯撒替尼科成员不确定地位和关系的部分原因是，许多属及其物种都是众所周知的，很少收集。 植物分类学和系统发育的研究本质上取决于野外工作，在偏远地区很多次，通常是凯撒巴尼鸟豆类的情况，尤其是在这项研究中。 该提案中概述的研究将为一群众所周知的凯撒型豆科植物属提供专有修订和物种级的系统发育假设，这些豆科植物属属于南美圭亚那盾牌地区（委内瑞拉，苏里南，法国圭亚那和圭亚那）。 NSF DDIG计划的资金将使Redden女士能够前往委内瑞拉和欧洲的博物馆检查这项研究所需的标志材料，并在委内瑞拉南部进行野外工作，以收集植物标本，干叶样品，并进行腌制鲜花。 总共将在委内瑞拉的塞拉塞拉德·尼伯利纳地区度过五个星期。在委内瑞拉，雷登女士还将访问五种草药，以收集有关本研究专有和系统发育方面的植物特征和分布的信息。 Reddens论文女士的主要目标是对该小组的五个关键属（Dicymbe，Paloue，Palovopsis，Paloveopsis，Heterostemon和Elizabetha）进行系统的修订，并研究形态学进化，尤其是花卉形态，尤其是花卉形态。 这些活动将加强与包括学生在内的委内瑞拉植物学家的合作，并将为凯撒尼西亚境内的关系提供更广泛的研究。 在委内瑞拉草本植物进行研究时，雷登女士将在可能的情况下检查和拍摄标本，验证识别并确定未知的材料。 除了为她的研究找到重要标本外，在委内瑞拉，Reddens植物园的工作还将有助于改善其收藏。 我们一直在与Basil Sterigos博士一起与Nacional实验性的De Los llanos costidentales Ezequil Zamora（UNELLEZ）合作，以计划现场工作。 Stergios博士和他的学生将陪同Redden女士参加现场探险。 这次探险不仅将为论文项目提供重要信息，还将记录委内瑞拉的生物多样性。 将为史密森尼机构（美国），赫巴里奥（Herbario）biocentro-unellez（港口）和委内瑞拉（VEN）的Herbario Nacional de Venezional（VEN）制作凭证标本。 除工厂收集外，所有其他信息还将与Unellez共享。 照片，GPS坐标，现场笔记本电脑和其他数据也将被复制，并留给Unellez。