Unlocking the bioavailability of phosphorus and micronutrients through development of low phytate-phosphorus pea

该项目是低植酸豌豆系列项目的“第二阶段”。题为“低植酸豌豆开发”的“第一阶段”于2006年顺利完成。阶段1导致在豌豆中发现了两个低植酸突变体。第二阶段(此处描述)将在生理、遗传和分子水平上描述这些突变体的特征，在动物模型中确定它们对磷和微量营养素生物利用率的影响，并为生产低植酸豌豆品种奠定基础。这些品种预计将至少有三个主要好处，从豆类生产者、豆类作物产业、牲畜生产者和环境健康。低植酸磷豌豆品种有望提高磷和包括铁和锌在内的几种重要矿物质的生物利用率。这应该会增加它们在食品和饲料市场的价值。这些品种将作为最近开发的低植酸大麦和玉米品种的适当补充。其次，当低植酸磷品种喂给单胃动物和人类时，磷的排泄和污染会减少，因为这些品种含有被这些物种消化的无机磷。第三，低植酸磷豌豆品种将节省饲料成本，因为对补充无机磷或植酸酶的需求将减少或取消。

This project represents "phase 2" of a series of projects on low phytate pea. "Phase 1" entitled "Development of low phytate peas" was successfully completed in 2006. Phase 1 resulted in the discovery of two low phytate mutants in pea. Phase 2 (described here) will characterize these mutants at the physiological, genetic, and molecular levels, determine their effects on bioavailability of phosphorus and micronutrients in an animal model, and set the stage for production of low phytate pea cultivars. These cultivars are expected to have at least three major benefits which extend from pulse producers, to the pulse crop industry, to livestock producers and to environmental health. Low phytate-phosphorus pea cultivars are expected to have improved bioavailability of phosphorus and several important minerals including iron and zinc. This should increase their value in both food and feed markets. These cultivars will serve as an appropriate complement to the low phytate barley and corn cultivars which have recently been developed. Secondly, when low phytate-phosphorus cultivars are fed to monogastric animals and humans, less phosphorus excretion and pollution will occur, since these cultivars contain inorganic phosphorus which is digested by these species. Thirdly, low phytate-phosphorus pea cultivars will result in a saving in feed costs, since the requirement for supplemental inorganic phosphorus or phytase enzyme will be reduced or eliminated.