RPG: Evolution of Whole Plant Ontogeny in Pelargonium

RPG：天竺葵全株个体发育的进化

• 批准号: 9408208
• 负责人: Cynthia Jones
• 金额: $ 1.8万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-06-01 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9408208&HistoricalAwards=false
• 关键词: RPG; Evolution; Whole; Plant; Ontogeny

9408208 Jones Within the last few years, development has emerged as a major theme in evolutionary biology. Recent insights gainsed from interdisciplinary studies of development in animals are laying the foundation for a new synthesis in comparative biology. There have been very few comparable studies in plants, however. The PI will initiate a study of the developmental basis of differentiation in whole plant growth form in the genus Pelargonium. This is an ideal group for this study because 1) species exhibit a tremendous range of whole plant morphology; 2) preliminary analyses of gene sequences suggest that historical relationships can be resolved in this group; and 3) the group is well studied in other respects but basic studies of developmental morphology are lacking. the PI will compare morphological and histological development of seedlings in three species from each major lineage in the subgenus Pelargonium. The proposed investigation focusses on seedlings because this stage of the life cycle represents the earliest expression of the body plan. Structural comparisons of ecologically important structures of seedlings, together with deduction of rules of construction expressed at later stages, will provide the framework for deduction of the whole plant body plan as well as assessment of the importance of the onset and timing of formation of water-storing and carbohydrate-storing tissues.

[408208 .琼斯在过去的几年里，发展已经成为进化生物学的一个主要主题。最近从动物发育的跨学科研究中获得的见解为比较生物学的新综合奠定了基础。然而，在植物中很少有类似的研究。该项目将开展天竺葵属植物整体生长形态分化的发育基础研究。这是一个理想的研究群体，因为1)物种表现出巨大的整体植物形态范围；2)基因序列的初步分析表明，在这一群体中可以解决历史关系；3)该群体在其他方面得到了很好的研究，但缺乏发育形态学的基础研究。该项目将比较天竺葵亚属各主要谱系中三种植物幼苗的形态和组织学发育。我们提出的研究集中在幼苗上，因为这一生命周期的阶段代表了身体计划的最早表达。对幼苗生态上重要结构的结构比较，以及对后期表达的结构规则的推断，将为推断整个植物体计划以及评估储水和碳水化合物组织形成的开始和时间的重要性提供框架。