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

基本信息

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

项目摘要

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美国 - 巴西计划访问将支持Drs。犹他大学的菲利斯·D·科利（Phyllis D. Coley）和托马斯·库萨尔（Thomas A. 植物和食草动物构成了地球的大部分生物多样性，在热带森林中，它们的相互作用极为强烈。食草动物与植物之间的进化相互作用导致了一场“军备竞赛”，在该竞争中，植物防御中的创新是通过食草动物的反调整来实现的。在热带森林中，绝大多数草食生物发生在年轻而不是成熟的叶子上，物种之间的损害有很大的变化，但对这种变化的根本原因很少知道。2002年，PI在2002年建立了INGA项目，这次访问将代表其在Panama中的第一次地理扩展。访问巴西同事的目的是在亚马逊建立一个合作研究INGA的合作，其中它特别多样化和丰富。使用系统发育方法，该项目将检查许多INGA物种的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剂以及现场的实际损伤率相关。方法包括对植物化学的分析，用草食动物进行评估毒性的喂养试验，以及食草动物的现场定量，叶子候物候和系统发育树的结构。