Signalling for root nodule organogenesis: a role of the Lotus japonicus cytokinin receptor gene family

根瘤器官发生的信号传导：百脉根细胞分裂素受体基因家族的作用

• 批准号: 249579-2012
• 负责人: Szczyglowski, Krzysztof
• 金额: $ 3.86万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=594284
• 关键词: Signalling; root; nodule; organogenesis; role

In Canada, the agricultural sector is responsible for about 82% of the phosphorus and 49% of the direct nitrogen pollution, mostly through run-off from fertilized soils and livestock farming. This pollution is choking the environment and contributes to a significant loss in food production and increased health risks. Therefore, development of "green" technologies is imperative. In the past, efforts to improve crops have mainly focused on shoot biomass and seed yield while the relevance of roots has often been neglected. The renewed interest in the underground portion of the plant is now reflected by virtually all modern agricultural productivity strategies, which advocate the need for intensification of research on the enhancement of nutrient acquisition and use by crop plants. Ability to control root architecture and extension of symbiotic nitrogen fixation to non-legumes, are being considered as key areas. The research, as proposed by this application, aims to make strategic contributions to the basic knowledge of key signalling mechanisms pertinent to the development of nitrogen-fixing root nodule symbiosis in legumes. This is thought to be an essential step for future rational consideration of transferring this useful process to non-legumes. Although challenging and long-term, this should be offset by the enormous impact this prospective innovation is expected to have.

在加拿大，农业部门造成了大约82%的磷和49%的直接氮污染，主要是通过肥沃土壤和畜牧业的径流造成的。这种污染正在窒息环境，并导致粮食生产的重大损失和健康风险的增加。因此，发展“绿色”技术势在必行。过去，改良作物的努力主要集中在地上部生物量和种子产量上，而对根的相关性往往被忽视。现在几乎所有现代农业生产力战略都反映了人们对植物地下部分的新兴趣，这些战略主张需要加强研究，以加强作物对养分的获取和利用。控制根构型的能力和将共生固氮扩展到非豆科植物被认为是关键领域。本研究旨在为豆科植物固氮根瘤共生发育的关键信号机制的基础知识做出战略性贡献。这被认为是未来理性考虑将这一有用的过程转移到非豆类植物上的必要步骤。尽管具有挑战性和长期性，但这一预期创新预计将产生的巨大影响应该可以抵消这一影响。