Causes and Consequences of an Age Dependent Breakdown in Self-Incompatibility in Campanula rapunculoides

风铃自交不亲和力年龄依赖性崩溃的原因和后果

基本信息

  • 批准号:
    9527739
  • 负责人:
  • 金额:
    $ 18.9万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    1996
  • 资助国家:
    美国
  • 起止时间:
    1996-04-01 至 2000-03-31
  • 项目状态:
    已结题

项目摘要

9527739 STEPHENSON Fertilization in plants is the culmination of a series of interactions between the pollen grain and the female part of a flower (the pistil). Each flowering plant in the world today is here because the pollen of each of its paternal ancesters succeeded in fertilizing an egg that produced a seed. An understanding of pollen tube growth and the interactions of growing pollen tubes with the pistil are fundamental to the plant sciences, just as the ability to manipulate the growth of pollen has profound implications for the applied plant science and biotechnology. One of the most interesting and potentially useful pollen-pistil interactions is self-incompatibility (SI). SI is a genetic system that allows a plant to recognize and reject self pollen while permitting the growth of cross pollen. This mechanism allows plants to avoid the deleterious effects of inbreeding. Recently, we have found that the flowers of Campanula plants are self-incompatible when they first open but, as the flowers become older, they permit growth and fertilization by self pollen. The research funded in this award will identify the genetic causes of this breakdown in SI over time; it will examine the molecular basis for the breakdown in SI; it will determine how the breakdown in SI leads to different levels of inbreeding under different environmental circumstances; and it will use DNA sequence information to begin to look at the evolution of SI. Results will allow tests of competing hypotheses in three active and highly debated areas of basic plant biology: the population biology of pollen performance, the evolution and maintenance of mixed mating systems (partial selfing), and the evolution of SI. Findings should assist in the development of cost-saving and time-saving methodology for the production of inbred lines needed by commercial plant breeding programs.
斯蒂芬森9527739 植物的受精作用是花粉粒与花的雌性部分(雌蕊)之间一系列相互作用的结果。今天世界上的每一种开花植物都在这里,因为它的每一个父系祖先的花粉都成功地繁殖了一个产生种子的卵。对花粉管生长以及生长中的花粉管与雌蕊的相互作用的理解是植物科学的基础,就像操纵花粉生长的能力对应用植物科学和生物技术具有深远的影响一样。自交不亲和性是花粉-雌蕊相互作用中最有趣和最有潜力的一种。SI是一种允许植物识别和排斥自花花粉而允许杂交花粉生长的遗传系统。这种机制使植物能够避免近亲繁殖的有害影响。最近,我们发现风铃草属植物的花在刚开放时是自交不亲和的,但是随着花的成熟,它们允许生长和通过自花花粉受精。 该奖项资助的研究将确定SI随时间推移而崩溃的遗传原因;它将检查SI崩溃的分子基础;它将确定SI崩溃如何在不同环境条件下导致不同水平的近亲繁殖;它将使用DNA序列信息开始研究SI的进化。 结果将允许在三个活跃的和高度争议的基础植物生物学领域的竞争假说的测试:花粉性能的群体生物学,混合交配系统(部分自交)的进化和维护,以及SI的进化。 研究结果应有助于开发节省成本和节省时间的方法,用于生产商业植物育种计划所需的自交系。

项目成果

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Andrew Stephenson其他文献

Engendering Change within a Water Infrastructure Client Organisation: A Participatory Action Research Approach
在水基础设施客户组织内引发变革:参与性行动研究方法
  • DOI:
    10.32738/jeppm.201507.0003
  • 发表时间:
    2014
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M. Potts;B. Awuzie;P. McDermott;Andrew Stephenson
  • 通讯作者:
    Andrew Stephenson
Long-term outcomes of systemic corticosteroid-sparing immunomodulatory therapy for Birdshot Retinochoroidopathy
全身性少用皮质类固醇免疫调节疗法治疗 Birdshot 视网膜脉络膜病变的长期结果
  • DOI:
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    3.3
  • 作者:
    C. You;A. Lasave;Buraa Kubaisi;S. Syeda;Lina Ma;K. Wai;Mikhail Hernández Díaz;M. Walsh;Andrew Stephenson;Alyssa Montieth;C. Foster
  • 通讯作者:
    C. Foster
MP72-17 RADICAL CYSTECTOMY PRACTICES AMONG URO-ONCOLOGISTS: A STATE OF THE ART SURVEY
  • DOI:
    10.1016/j.juro.2015.02.2651
  • 发表时间:
    2015-04-01
  • 期刊:
  • 影响因子:
  • 作者:
    Evan Kovac;Kamran Zargar-Shoshtari;Homayoun Zargar;Cesar Ercole;Andrew Stephenson
  • 通讯作者:
    Andrew Stephenson
336 ALL HIGH-GRADE PROSTATE CANCERS CREATED EQUALLY? AN ANALYSIS OF CLINICAL FEATURES AND SURVIVAL AMONG PATIENTS WITH BIOPSY GLEASON SCORE 8, 9, AND 10 DISEASE
  • DOI:
    10.1016/j.juro.2012.02.397
  • 发表时间:
    2012-04-01
  • 期刊:
  • 影响因子:
  • 作者:
    Byron Lee;Jorge Garcia;Robert Dreicer;Rahul Tendulkar;Kevin Stephans;Cristina Magi-Galluzzi;Eric Klein;William Oh;Andrew Stephenson
  • 通讯作者:
    Andrew Stephenson
437 NOMOGRAM PREDICTING URINARY INCONTINENCE FOR MEN WITH LOCALIZED PROSTATE CANCER TREATED BY RADICAL PROSTATECTOMY, EXTERNAL-BEAM RADIOTHERAPY, AND BRACHYTHERAPY
  • DOI:
    10.1016/j.juro.2013.02.1827
  • 发表时间:
    2013-04-01
  • 期刊:
  • 影响因子:
  • 作者:
    Joseph Klink;Martin Sanda;Mark Litwin;Montserrat Ferrer;Meredith Regan;Christopher Saigal;Lorna Kwan;Tianming Gao;Danny Rabah;Eric Klein;Michael Kattan;Andrew Stephenson
  • 通讯作者:
    Andrew Stephenson

Andrew Stephenson的其他文献

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{{ truncateString('Andrew Stephenson', 18)}}的其他基金

Effects of inbreeding on plant defenses, volatile production, plant-insect interactions, and the evolution of the breeding system in Solanum carolinense
近交对卡罗林茄植物防御、挥发物产生、植物-昆虫相互作用以及育种系统进化的影响
  • 批准号:
    1050998
  • 财政年份:
    2011
  • 资助金额:
    $ 18.9万
  • 项目类别:
    Standard Grant
Factors that influence the amount and pattern of genetic diversity in ZYMV
影响ZYMV遗传多样性数量和模式的因素
  • 批准号:
    1010881
  • 财政年份:
    2010
  • 资助金额:
    $ 18.9万
  • 项目类别:
    Standard Grant
Studies of the Interrelationships Among Inbreeding, Resistance to Herbivores, and the Transmission of Pathogens in Wild Gourds
野葫芦近交、食草动物抗性和病原体传播之间相互关系的研究
  • 批准号:
    0235217
  • 财政年份:
    2003
  • 资助金额:
    $ 18.9万
  • 项目类别:
    Continuing Grant
Causes and Consequences of an Age Dependent Breakdown in Self-Incompatibility in Campanula rapunculoides
风铃自交不亲和力年龄依赖性崩溃的原因和后果
  • 批准号:
    9982086
  • 财政年份:
    2000
  • 资助金额:
    $ 18.9万
  • 项目类别:
    Continuing Grant
Effects of Inbreeding on the Male and Female Functions of Plants
近交对植物雄性和雌性功能的影响
  • 批准号:
    9806691
  • 财政年份:
    1998
  • 资助金额:
    $ 18.9万
  • 项目类别:
    Standard Grant
The Effect of Symbiotic Fungi on Plant Reproduction
共生真菌对植物繁殖的影响
  • 批准号:
    9419722
  • 财政年份:
    1995
  • 资助金额:
    $ 18.9万
  • 项目类别:
    Continuing Grant
Genetic and Environmental Factors that Influence Microgametophytic Variation
影响小配子体变异的遗传和环境因素
  • 批准号:
    9318224
  • 财政年份:
    1994
  • 资助金额:
    $ 18.9万
  • 项目类别:
    Continuing Grant
Genetic and Environmental Factors that Influence Microgametophytic Variation
影响小配子体变异的遗传和环境因素
  • 批准号:
    9109270
  • 财政年份:
    1991
  • 资助金额:
    $ 18.9万
  • 项目类别:
    Continuing Grant
Relationship of Seed Quality to Genetic Variation in Pollen
种子质量与花粉遗传变异的关系
  • 批准号:
    8818184
  • 财政年份:
    1989
  • 资助金额:
    $ 18.9万
  • 项目类别:
    Standard Grant
Flower, Fruit and Seed Production and Quality in Lotus corniculatus.
百脉根的花、果和种子的生产和质量。
  • 批准号:
    8315612
  • 财政年份:
    1984
  • 资助金额:
    $ 18.9万
  • 项目类别:
    Standard Grant

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