Identification and Mapping of Genes Controlling K+/Na+ Selectivity in Lophopyrum elongatum

长柄珩草 K/Na 选择性控制基因的鉴定和定位

• 批准号: 9728576
• 负责人: Jan Dvorak
• 金额: $ 30万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-01 至 2001-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9728576&HistoricalAwards=false
• 关键词: Identification; Mapping; Genes; Controlling; K+

9728576 Dvorak Salinity is an environmental condition in many natural situations. Salinization is also a major hazard to irrigated agriculture. Therefore, the understanding of the mechanisms by which plants adapt to saline environmental conditions is important both for the sake of the basic knowledge and for practical reasons. In the previous phase of this project, an amphiploid (a stable hybrid) from a cross between Lophopyrum elongatum, a highly salt-tolerant relative of wheat, and wheat was shown to be salt-tolerant. Wheat lines carrying individually each of the seven L. elongatum chromosomes were developed and used to identify Lophopyrum elongatum chromosomes controlling salt tolerance. Each L. elongatum chromosome was found to enhance salinity tolerance of wheat. Chromosomes 1E, 3E, 6E, and 7E were found to be enhance salinity tolerance by controlling potassium/sodium ion selectivity. In this phase of the project these for chromosomes will be recombined with specific wheat chromosomes. Genes controlling salt tolerance via enhancing potassium/sodium ion selectivity on these four chromosomes will be identified and mapped.

9728576德沃夏克盐度是许多自然情况下的环境条件。 盐碱化也是灌溉农业的一大危害。 因此，了解植物适应盐环境条件的机制对于基础知识和实践原因都是重要的。 在该项目的前一阶段，来自小麦的高度耐盐亲戚Lophopyrum elongatum和小麦之间的杂交的双二倍体（稳定的杂种）被证明是耐盐的。 小麦品系分别携带7个L.开发了长穗偃麦草染色体并用于鉴定控制耐盐性的长穗偃麦草染色体。 每个L.延长体染色体的存在增强了小麦的耐盐性。 染色体1 E、3E、6 E和7 E通过控制钾/钠离子选择性来增强耐盐性。 在项目的这一阶段，这些染色体将与特定的小麦染色体重组。 通过增强这四条染色体上的钾/钠离子选择性来控制耐盐性的基因将被鉴定和定位。