Novel Lessons From Ancient Plants: water transport in the earliest tracheophytes

古代植物的新教训:最早的气管植物中的水运输

基本信息

  • 批准号:
    1258186
  • 负责人:
  • 金额:
    $ 49万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2013
  • 资助国家:
    美国
  • 起止时间:
    2013-05-15 至 2018-04-30
  • 项目状态:
    已结题

项目摘要

Seedless vascular plants such as ferns and horsetails are among the oldest lineages in the modern flora and with origins in the Devonian, it is remarkable that these plants remain competitive in a world dominated by conifers and angiosperms. Much is known about the physiology of woody plants, but what explains the continued success of the seedless vascular group? The goal of the proposed research is to examine the ferns and fern allies through the lens of physiology, specifically plant water relations. Efficient and resilient water transport is critical for plant success, but whether water transport played a role in the evolutionary physiology of seedless vascular flora remains unknown. The proposed research has several objectives with the overarching goals focusing on the relationships between species' drought resistance, vascular anatomy, habitat and life history traits, and how these features bear on the evolution of early vascular flora. Anatomical and physiological data will be incorporated into a realistic model of fern water transport, the results of which will be used to inform a large-scale sampling effort across the well-resolved evolutionary tree of ferns. This will improve present understanding of the manner in with which specific traits facilitated deep-time diversification of the ferns and fern allies. Lastly, this project will apply a recently developed model of vascular design to seedless vascular plants, and thus complete the understanding of the selection pressures driving the evolution of transport networks across all vascular flora. Broader impacts include high school and undergraduate participation in a conservation based, long-term study of fern performance in the redwood understory, teaching modules in local under-served high schools and the mentoring of undergraduate students in the PI's lab.
蕨类植物和马尾草等无籽维管植物是现代植物区系中最古老的谱系之一,起源于泥盆纪,值得注意的是,这些植物在针叶树和被子植物占主导地位的世界中仍然具有竞争力。 人们对木本植物的生理学了解很多,但是如何解释无籽维管束的持续成功呢? 拟议研究的目标是通过生理学的角度来研究蕨类植物和蕨类植物盟友,特别是植物与水的关系。 高效且有弹性的水运输对于植物的成功至关重要,但水运输是否在无籽维管菌群的进化生理学中发挥作用仍不清楚。拟议的研究有几个目标,总体目标侧重于物种的抗旱性、维管解剖学、栖息地和生活史特征之间的关系,以及这些特征如何影响早期维管菌群的进化。 解剖学和生理学数据将被纳入蕨类植物水分运输的现实模型中,其结果将用于为整个蕨类植物进化树的大规模采样工作提供信息。这将提高目前对特定性状如何促进蕨类植物和蕨类植物盟友的深度多样化的理解。 最后,该项目将把最近开发的维管设计模型应用于无籽维管植物,从而完成对驱动所有维管植物群运输网络进化的选择压力的理解。 更广泛的影响包括高中和本科生参与基于保护的长期研究,研究红杉林下蕨类植物的表现,当地服务不足的高中的教学模块以及 PI 实验室本科生的指导。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

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Jarmila Pittermann其他文献

Pteris ×caridadiae (Pteridaceae), a new hybrid fern from Costa Rica
  • DOI:
    10.1007/s12228-015-9370-8
  • 发表时间:
    2015-02-21
  • 期刊:
  • 影响因子:
    0.700
  • 作者:
    Weston L. Testo;James E. Watkins;Jarmila Pittermann;Rehman Momin
  • 通讯作者:
    Rehman Momin

Jarmila Pittermann的其他文献

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{{ truncateString('Jarmila Pittermann', 18)}}的其他基金

Collaborative Research: The Cenozoic radiation of eupolypod ferns: did selection for drought tolerance drive the evolutionary physiology of sporophytes and gametophytes?
合作研究:真水母蕨类植物的新生代辐射:耐旱性的选择是否驱动了孢子体和配子体的进化生理学?
  • 批准号:
    1656876
  • 财政年份:
    2017
  • 资助金额:
    $ 49万
  • 项目类别:
    Continuing Grant
The Structure-Function Relationships of Tracheid-Based Xylem: An Integrated Approach
基于管胞的木质部的结构与功能关系:一种综合方法
  • 批准号:
    1027410
  • 财政年份:
    2010
  • 资助金额:
    $ 49万
  • 项目类别:
    Standard Grant

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