U.S. -Brazil Planning Visit: The Evolution and Ecology of Young Leaf Defenses in Inga, A Widespread and Speciose Neotropical genus

美国-巴西计划访问：印加（一种广泛分布的新热带属）幼叶防御的进化和生态

• 批准号: 0531803
• 负责人: Phyllis Coley
• 金额: $ 1.2万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-15 至 2007-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0531803&HistoricalAwards=false
• 关键词: U.S.; Brazil; Planning; Visit; Evolution

0531803ColeyThis U.S.-Brazil planning visit will support Drs. Phyllis D. Coley and Thomas A. Kursar, both of the University of Utah, to initiate a promising international collaboration with Dr. Maristerra Lemes of the Instituto National de Pesquisas da Amazonia (INPA) in Brazil on a project to study the ecology and chemical defenses of the tropical legume tree, Inga. Plants and herbivores make up the majority of the earth's biodiversity and their interactions are extremely intense in tropical forests. The evolutionary interaction between herbivores and plants has led to an "arms race" in which innovation in plant defenses are met by counter adaptations on the part of herbivores. In tropical forests, the vast majority of herbivory occurs on young rather than mature leaves and there is enormous variation in damage among species, yet little is known as to the underlying cause of this variation.Beginning in 2002, the PI established the Inga project in Panama and this visit will represent the first geographic expansion of their work out of Panama. The objective of the visit to colleagues in Brazil is to establish a collaboration studying Inga in the Amazon where it is particularly diverse and abundant. Using a phylogenetic approach, the project will examine the nature and activity of secondary metabolites in young leaves of a number of Inga species, and correlate this with other plant defenses, and with actual damage rates in the field. Methods include analyses of plant chemistry, feeding trials with herbivores to assess toxicity, and field quantification of herbivory, leafing phenology and the construction of a phylogenetic tree.

0531803 ColeyThis美国-巴西规划访问将支持Phyllis D. Coley和托马斯A. Kursar博士和犹他州大学的Maristerra Lemes博士将与巴西亚马逊国家研究所（INPA）的Maristerra Lemes博士就一个研究热带豆科植物Inga的生态学和化学防御的项目开展一项有前途的国际合作。 植物和食草动物构成了地球生物多样性的大部分，它们之间的相互作用在热带森林中非常强烈。 食草动物和植物之间的进化相互作用导致了一场“军备竞赛”，在这场竞赛中，植物防御的创新受到食草动物的反适应。 在热带森林中，绝大多数食草动物发生在幼叶而不是成熟的叶子上，物种之间的损害差异很大，但对这种差异的根本原因知之甚少。从2002年开始，PI在巴拿马建立了Inga项目，这次访问将代表他们在巴拿马以外的工作的第一次地理扩展。 访问巴西同事的目的是建立合作研究亚马逊地区的英加，那里的英加物种特别多样化和丰富。 使用系统发育的方法，该项目将检查一些Inga物种幼叶中次生代谢产物的性质和活性，并将其与其他植物防御以及该领域的实际损害率相关联。 方法包括植物化学分析，与食草动物喂养试验，以评估毒性，和现场定量的食草动物，叶物候和系统发育树的建设。