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Studies on the Structure and Function of Plant Glands

植物腺体结构与功能的研究

基本信息

批准号：
8919064
负责人：
William Thomson
金额：
$ 13万
依托单位：
University of California-Riverside
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1990
资助国家：
美国
起止时间：
1990-08-01 至 1993-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8919064&HistoricalAwards=false
关键词：
Studies Structure Function Plant Glands

项目摘要

The overall goal of this research is to understand the structure and function of plant salt glands. These studies will use transmission electron microscopy, freeze-fracture electron microscopy, X-ray microprobe studies, and morphometric procedures, as correlated with physiological experiments to assess the mechanisms involved in secretion and the structural and organizational features of the glands apparently requisite for glandular function. Assuming that membrane transport is the fundamental physiological process underlying salt secretion, the goal is to characterize, as well as is presently possible, the pertinent membranes of salt gland cells, particularly as to flux capacities, selective transport properties, effects of selective inhibitors, and their macromolecular organization as related to secretion. Since comparative ultrastructural studies of the different gland types have continued to advance our insight into the structural and functional relationships basic to the secretory processes in different types of plant glands, these comparative studies will be continued. Further, studies will be expanded to examine the organization of cells, organelles, cell compartments, and membranes in regard to absorptive processes. The proposed research is designed to clarify the structural and functional relationships in plant glands relative to the processes of secretion and absorption and to determine the macromolecular organization of the cell membranes of plant secretory cells. Salt glands occur in the leaves of a wide variety of higher plants and are believed to be important in the regulation of the ionic balance of leaves. The results of this research will contribute to our understanding of the structure and function of these important plant organs.

这项研究的总体目标是了解植物盐腺的结构和功能。这些研究将使用透射电子显微镜、冷冻断裂电子显微镜、X射线微探针研究和形态计量学方法，与生理实验相关联，以评估分泌机制以及腺体功能显然所必需的腺体的结构和组织特征。假设膜转运是盐腺分泌的基本生理过程，目标是表征盐腺细胞的相关膜，特别是膜的通量、选择性转运特性、选择性抑制剂的作用及其与分泌相关的大分子组织。由于不同类型腺体的超微结构比较研究继续推动我们深入了解不同类型植物腺体分泌过程的基本结构和功能关系，这些比较研究将继续进行。此外，将扩大研究范围，以检查细胞、细胞器、细胞室和膜的吸收过程的组织。这项拟议的研究旨在阐明植物腺体中与分泌和吸收过程相关的结构和功能关系，并确定植物分泌细胞细胞膜的大分子组织。盐腺存在于多种高等植物的叶片中，被认为在调节叶片的离子平衡方面起着重要作用。这项研究的结果将有助于我们了解这些重要的植物器官的结构和功能。