RUI: Growth Equations for Sporiangiophores of Phycomyces: Transpiration

海藻孢子囊梗的感觉系统 blakesleeanus多年来一直受到关注。的 孢子囊载体是大的单细胞， 几种不同的环境刺激， 或伸长生长速率的不对称变化。 因此，在本发明中， 要详细了解感觉系统， 深入定量了解的监管， 孢子囊柄的生长速率。 的长期目标 建议的研究是建立定量关系 （生长方程）为孢子囊生长速率和水 运输率，为所有阶段的孢子囊发育。 以前的研究表明，孢子囊柄可能 蒸腾高达85%的水吸收，因此蒸腾是一个 必须包括在定量分析中的重要过程 关系。 该项目的近期目标是 扩展生长方程，使其包括蒸腾作用，并 研究蒸腾过程作为发展的函数， 环境条件 所获得的结果可能提供新的 深入了解蒸腾过程，水分运输，植物 细胞生长和生长调节，植物细胞发育， 感觉传导 %%% 奥尔特加博士建议通过实验来确定 的生物物理和生物化学特性及其变化 巨大的单细胞的真菌Phycommonium，以建立 生长速率的定量数学模型， 这些细胞的行为。 这些大细胞检测并响应 几种不同的环境刺激，如光， 在伸长生长中的对称或不对称变化 率，并因此被用作一个模型系统，用于阐明 感觉传导过程他将决定 蒸腾作用（水分保持或损失）对生长的影响 并将这些信息纳入他的数学 模型其结果将具有更广泛的意义， 了解细胞壁生长和水的机制 在其他真菌和绿色植物中也有运输。

The sensory system of the sporangiophores of Phycomyces blakesleeanus has been of interest for many years. The sporangiophores are large single cells that detect and respond to several different environmental stimuli with either a symmetric or an asymmetric change in elongational growth rate. Thus, fundamental to a detailed understanding of the sensory system is an in-depth quantitative understanding of the regulation of the sporangiophore's growth rate. The long-term objective of the proposed research is to establish quantitative relationships (Growth Equations) for sporangiophore growth rate and water transport rate, for all stages of sporangiophore development. Previously, it was demonstrated that the sporangiophore may transpire up to 85% of its water uptake, thus transpiration is an important process which must be included in the quantitative relationships. The immediate objective of this project is to extend the Growth Equations to include transpiration, and to study the transpiration process as a function of development and environmental conditions. The results obtained may provide new insight into the transpiration process, water transport, plant cell growth and growth regulation, plant cell development, and sensory transduction. %%% Dr. Ortega proposes to experimentally determine the magnitude of, and changes in, biophysical and biochemical properties of the giant single cells of the fungus Phycomyces in order to establish a quantitative mathematical model for the growth rate and behavior of these cells. These large cells detect and respond to several different environmental stimuli such as light, with either a symmetric or asymmetric change in elongational growth rate and have thus been used as a model system for elucidating the sensory transduction process. He here will determine the effects of transpiration (water retention or loss) on growth rates and incorporate this information into his mathematical models. The results will have a wider significance in understanding the mechanics of cell wall growth and water transport in other fungi and also in green plants.