Development of hormone based genomic tools to accelerate wheat breeding for enhanced preharvest sprouting tolerance

开发基于激素的基因组工具,加速小麦育种,增强收获前发芽耐受性

基本信息

  • 批准号:
    493479-2015
  • 负责人:
  • 金额:
    $ 0.88万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Collaborative Research and Development Grants
  • 财政年份:
    2018
  • 资助国家:
    加拿大
  • 起止时间:
    2018-01-01 至 2019-12-31
  • 项目状态:
    已结题

项目摘要

Wheat is one of the most economically important crops of Canada, however, its production is challenged constantly by a variety of stress factors such as preharvest sprouting (PHS), which refers to the germination of grains on the mother plant prior to harvest. PHS lowers grain yield and severely limits end-use quality, causing substantial economic loss to the producers. Given that the incidence of PHS is expected to increase with climate change induced seasonal shifts in precipitation and temperature, tolerance to PHS is a highly desirable trait sought by Canadian wheat producers. Many of the genetic and environmental factors that regulate PHS tolerance are mediated mainly by abscisic acid (ABA) and gibberellins (GA), which are among the plant produced compounds that influence growth and developmental processes at very low concentrations, usually coined as "plant hormones". ABA and GA play antagonistic roles in controlling PHS; ABA enhances PHS tolerance while GA promotes PHS potential. However, how environmental factors such as temperature regulate the balance of grain ABA/GA levels and sensitivity during maturation, and thereby PHS tolerance is poorly understood in wheat. Difference in PHS tolerance between wheat genotypes can also be induced by variations in the genomic sequences and/or expression levels of key genes implicated in the control of PHS. The goals of this research are to identify specific molecular elements that regulate temperature-induced changes in ABA/GA balance in maturing wheat grains, identify PHS associated variations in the sequences of ABA related genes, and investigate temperature regulation of other key PHS controlling genetic factors. The findings of this research will provide powerful genomic tools that can facilitate the breeding of wheat cultivars with adequate PHS tolerance; thereby improving wheat yield and quality, and farm income for Canadian wheat producers. Further, this research involves the training of highly qualified personnel in the area of crop biotechnology and molecular breeding, which is critical to the competitiveness of Canada's crop industry.
小麦是加拿大最重要的经济作物之一,然而,其生产不断受到各种胁迫因素的挑战,如收获前发芽(PHS),这是指收获前母体植物上的谷物发芽。小灵通降低了粮食产量,严重限制了最终使用质量,给生产者造成了巨大的经济损失。鉴于PHS的发病率预计将随着气候变化引起的降水和温度的季节性变化而增加,对PHS的耐受性是加拿大小麦生产商寻求的一个非常理想的性状。调节PHS耐受性的许多遗传和环境因素主要由脱落酸(阿坝)和赤霉素(GA)介导,脱落酸和赤霉素是植物产生的化合物,其在非常低的浓度下影响生长和发育过程,通常被称为“植物激素”。阿坝和GA在控制PHS中起拮抗作用,阿坝增强PHS耐受性,GA促进PHS潜力。然而,环境因素,如温度如何调节成熟过程中的阿坝/GA水平和敏感性的平衡,从而PHS耐受性在小麦中知之甚少。小麦基因型间PHS耐性的差异也可由与PHS控制有关的关键基因的基因组序列和/或表达水平的变化引起。本研究的目的是确定特定的分子元件,调节成熟小麦籽粒中阿坝/GA平衡的温度诱导的变化,确定PHS相关的ABA相关基因序列的变化,并调查温度调节的其他关键PHS控制遗传因子。这项研究的结果将提供强大的基因组工具,可以促进小麦品种的培育与足够的PHS耐受性,从而提高小麦产量和质量,并为加拿大小麦生产者的农场收入。此外,这项研究涉及培训作物生物技术和分子育种领域的高素质人员,这对加拿大作物产业的竞争力至关重要。

项目成果

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Ayele, Belay其他文献

Ayele, Belay的其他文献

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{{ truncateString('Ayele, Belay', 18)}}的其他基金

Enhancing traits of agronomic and economic importance in wheat
增强小麦的农艺和经济重要性性状
  • 批准号:
    545510-2019
  • 财政年份:
    2021
  • 资助金额:
    $ 0.88万
  • 项目类别:
    Alliance Grants
Crosstalk between gibberellin and other signaling molecules in the regulation of seed dormancy
赤霉素与其他信号分子在种子休眠调节中的串扰
  • 批准号:
    RGPIN-2016-05899
  • 财政年份:
    2021
  • 资助金额:
    $ 0.88万
  • 项目类别:
    Discovery Grants Program - Individual
Optimizing preharvest sprouting tolerance in malting barley
优化啤酒大麦采前发芽耐受性
  • 批准号:
    515548-2017
  • 财政年份:
    2021
  • 资助金额:
    $ 0.88万
  • 项目类别:
    Collaborative Research and Development Grants
Optimizing preharvest sprouting tolerance in malting barley
优化啤酒大麦的采前发芽耐受性
  • 批准号:
    515548-2017
  • 财政年份:
    2020
  • 资助金额:
    $ 0.88万
  • 项目类别:
    Collaborative Research and Development Grants
Enhancing traits of agronomic and economic importance in wheat
增强小麦的农艺和经济重要性性状
  • 批准号:
    545510-2019
  • 财政年份:
    2020
  • 资助金额:
    $ 0.88万
  • 项目类别:
    Alliance Grants
Enhancing traits of agronomic and economic importance in wheat
增强小麦的农艺和经济重要性性状
  • 批准号:
    545510-2019
  • 财政年份:
    2019
  • 资助金额:
    $ 0.88万
  • 项目类别:
    Alliance Grants
Optimizing preharvest sprouting tolerance in malting barley
优化啤酒大麦的采前发芽耐受性
  • 批准号:
    515548-2017
  • 财政年份:
    2019
  • 资助金额:
    $ 0.88万
  • 项目类别:
    Collaborative Research and Development Grants
Development of hormone based genomic tools to accelerate wheat breeding for enhanced preharvest sprouting tolerance
开发基于激素的基因组工具,加速小麦育种,增强收获前发芽耐受性
  • 批准号:
    493479-2015
  • 财政年份:
    2019
  • 资助金额:
    $ 0.88万
  • 项目类别:
    Collaborative Research and Development Grants
Crosstalk between gibberellin and other signaling molecules in the regulation of seed dormancy
赤霉素与其他信号分子在种子休眠调节中的串扰
  • 批准号:
    RGPIN-2016-05899
  • 财政年份:
    2019
  • 资助金额:
    $ 0.88万
  • 项目类别:
    Discovery Grants Program - Individual
Crosstalk between gibberellin and other signaling molecules in the regulation of seed dormancy
赤霉素与其他信号分子在种子休眠调节中的串扰
  • 批准号:
    RGPIN-2016-05899
  • 财政年份:
    2018
  • 资助金额:
    $ 0.88万
  • 项目类别:
    Discovery Grants Program - Individual

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