REU: Photosynthetic Pathways in Seasonal Pool Aquatic Macrophytes

REU：季节性池水生植物的光合途径

• 批准号: 8705250
• 负责人: Jon Keeley
• 金额: $ 10.34万
• 依托单位: Occidental College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-10-15 至 1990-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8705250&HistoricalAwards=false
• 关键词: REU; Photosynthetic; Pathways; Seasonal; Pool

Photosynthesis is the process by which plants convert atmospheric carbon dioxide into carbohydrates. All animals including man, directly or indirectly, depend upon this process for their daily caloric intake. Although food production demands are continuing to rise, our food production/unit of land area has leveled off. The future demands an increased understanding of and ability to manipulate plant photosynthesis. Our understanding of photosynthesis has changed dramatically in the last 15 years due to the discovery of different metabolic pathways in some plants. It is now known that there are at least two rather specialized groups of plants (C4 and CAM) which, prior to assimilating CO2 into glucose, fix C02 directly into an organic acid (malic acid). The proposed research will focus on recent discoveries of these unusual photosynthetic pathways incertain aquatic plants. It appears that for these aquatic plants, CO2 fixation into malic acid may be a mechanism for increasing net productivity. The implications of such a processare obvious when one recognizes that our most productive crops and our most drought.resistant crops possess this photosynthetic pathway. These generalizations however apply to terrestrial plants, very little is known about aquatic plant photosynthesis.

光合作用是植物 将大气中的二氧化碳转化为碳水化合物。 所有 包括人类在内的动物，直接或间接地依赖于此。 他们每日热量摄入的过程。 虽然粮食生产 需求持续上升，我们的粮食产量/单位土地 该地区已趋于平稳。 未来需要更多的 对植物光合作用的理解和操纵能力。 我们对光合作用的理解在2000年发生了巨大的变化 在过去的15年里，由于发现了不同的 一些植物的代谢途径。 目前已知， 至少有两个相当专门的植物群（C4和CAM） 其在将CO2同化为葡萄糖之前，直接固定CO2 有机酸（苹果酸）。 拟议的研究将 关注最近发现的这些不寻常的光合作用 路径不确定水生植物。 看来，对于这些 水生植物，CO2固定到苹果酸可能是一种机制 来提高净生产力。 这样一个问题的影响 当人们认识到我们最富有成效的 作物和大多数抗旱作物都具有这种特性 光合途径 然而，这些概括适用于 陆生植物，对水生植物知之甚少 光合作用