DISSERTATION RESEARCH: From two dimensions to three: origins and evolutionary development of the sepal crest in Iris

论文研究：从二维到三维：鸢尾萼片嵴的起源和进化发展

• 批准号: 1011731
• 负责人: Carol Wilson
• 金额: $ 0.98万
• 依托单位: Rancho Santa Ana Botanic Garden
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1011731&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; two; dimensions; three

The origin of the flower is considered one of the most important innovations resulting in the diversity of plant forms present on earth today. The flower components of a typical are flattened and two-dimensional. However, in crested Iris species, the flower components have perpendicular growth giving rise to a three-dimensional, elaborately colored, and fringed flower. The development of this novel, yet morphologically diverse flower, will be studied in an evolutionary context. The study of spatial and temporal factors within the floral bud will examine how novel structures evolve in relation to other floral organs through integrative evolution. This project will provide information and models for studies on the evolution of novel structures, the genetic bases for development of floral organs, and pollinator-plant interactions. This research will enhance knowledge on the development of the showy crest found in Iris and other floral organ elaborations that are prized in horticulture. Fieldwork will include researchers and graduate students at one USA and three Chinese plant science institutions and will provide an opportunity to inform local Chinese of the importance of conservation of rare Iris species.

花的起源被认为是导致当今地球上植物形态多样性的最重要的创新之一。典型的花的组成部分是扁平的和二维的。然而，在冠状鸢尾物种中，花的组成部分垂直生长，形成三维的、精心着色的、有条纹的花。这种新颖的发展，但形态多样的花，将在进化的背景下进行研究。对花芽内时空因素的研究将探讨花芽内的新结构是如何通过整合进化与其他花器官相关的。该项目将为研究植物新结构的进化、花器官发育的遗传基础以及传粉者与植物的相互作用提供信息和模型。这项研究将提高对鸢尾和其他在园艺中珍贵的花器官的花冠发育的认识。实地考察将包括一所美国和三所中国植物科学机构的研究人员和研究生，他们将有机会向当地中国人介绍稀有鸢尾物种保护的重要性。