Structure and Function of the Haustorium in Palm Seed Germination

棕榈种子萌发中吸器的结构和功能

• 批准号: 8709813
• 负责人: Darleen DeMason
• 金额: $ 26.4万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-10-01 至 1991-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8709813&HistoricalAwards=false
• 关键词: Structure; Function; Haustorium; Palm; Seed

Members of the palm family (Arecaceae), like most other monocotyledons, have a unique organ, the haustorium, which functions during germination and seedling establishment. It is the distal portion of the cotyledon which remains within the seed and grows in conjunction with endosperm degradation. This project (with a structural emphasis) employing a multidisciplinary approach is proposed to elucidate the function of the haustorium and the interaction between the haustorium and endosperm tissue. Structural and functional aspects of the interaction of the haustorium and endosperm tissue in the palm family will be conducted by 1) studying seed structure and developmental changes accompanying germination in the coconut palm (Cocos nucifera), 2) observing phosphate uptake and development of haustorial phosphate granules and their structural characteristics using chemical and physical fixation conditions and 3) using enzyme assays and techniques of localization on sections to determine the location and controls of hydrolase production. The plants Dr. De Mason is working with are economically and scientifically important and little understood. These studies will lead to a better basic understanding of the processes that occur during germination of palm seeds and the role of the haustorium in germination.

棕榈科（槟榔科）的成员，像大多数其他 单子叶植物有一个独特的器官吸器， 在萌发和幼苗建立期间。 它是远端部分 在种子中生长的子叶 胚乳降解。 该项目（强调结构性） 采用多学科的方法，建议阐明 吸器的功能和吸器之间的相互作用 和胚乳组织。 结构和功能方面 棕榈科植物吸器和胚乳组织的相互作用 将通过1）研究种子结构和发育 椰子树（Cocos nucifera）伴随发芽的变化， 2)观察吸器对磷的吸收和发育 颗粒及其结构特征， 物理固定条件和3）使用酶测定和技术 以确定的位置和控制， 水解酶生产。 德·梅森博士研究的植物在经济上和 在科学上很重要，但很少被理解。 这些研究将导致 更好地了解发生在 棕榈种子的萌发以及吸器在萌发中的作用。