Coping with Darkness: The Physiological Responses of Marine Microalgae to Aphotic Conditions and their Ecological Implications

应对黑暗:海洋微藻对无光条件的生理反应及其生态意义

基本信息

项目摘要

This research is designed to test the effects of extended darkness on the photosynthetic competence of benthic and planktonic diatoms. Lagrangian models of estuarine light fields surrounding phytoplankton and benthic algae indicate that exposure to darkness for from 2 5 days is a common occurrence. Preliminary evidence indicates that there is considerable species variation in the physiological competence after several days of darkness but the factors accounting for these differences are unknown. Metabolic and physiological changes during extended darkness are hypothesized to alter the photosynthetic apparatus and the subsequently ability of the cell to respond to light. The research focuses on two time scales of photosynthetic regulation. The extended time scale of hours days will be studied using measurements of the change in photosynthetic components including photosynthetic and quenching pigments, ribulose1,5 bisphosphate carboxylaseloxygenase (Rubisco), carbohydrate and protein. Short time-scale (minutes) responses will be evaluated using measurements of the kinetics of photosynthetic induction and of Rubisco activation and deactivation. Short time scale experiments will be interpreted in the context of the ability of cells to withstand brief exposures to bright light subsequent to prolonged darkness. It is anticipated that this research will lead to a more relevant framework for interpreting fluctuating light effects in estuarine habitats than can be had without considering the physiological 'costs' of periodic confinement to darkness.
这项研究旨在测试延长黑暗时间对底栖和浮游硅藻的光合作用能力的影响。浮游植物和底栖藻类周围河口光场的拉格朗日模型表明,从2 5天开始暴露在黑暗中是常见的情况。初步证据表明,经过几天的黑暗后,物种的生理能力有相当大的差异,但造成这些差异的因素尚不清楚。在长时间的黑暗中,新陈代谢和生理变化被认为会改变光合作用装置,并随后改变细胞对光的反应能力。研究集中在两个时间尺度上的光合作用调节。将通过测量光合作用和猝灭色素、核酮糖1,5-二磷酸羧基转移酶(Rubisco)、碳水化合物和蛋白质等光合作用成分的变化来研究延长的小时数天。短时间尺度(分钟)的响应将通过光合作用诱导动力学和Rubisco激活和失活的测量来评估。短时间尺度实验将在细胞在长时间黑暗后承受短暂的亮光暴露的能力的背景下进行解释。预计这项研究将导致一个更相关的框架来解释河口生境中波动的光效应,而不是考虑周期性地限制在黑暗中的生理“成本”。

项目成果

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

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Hugh MacIntyre其他文献

Hugh MacIntyre的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Hugh MacIntyre', 18)}}的其他基金

Collaborative Research: Groundwater Discharge, Benthic Coupling and Microalgal Community Structure in as Shallow Coastal Lagoon
合作研究:浅滩泻湖地下水排放、底栖耦合和微藻群落结构
  • 批准号:
    0961994
  • 财政年份:
    2010
  • 资助金额:
    $ 26.46万
  • 项目类别:
    Standard Grant

相似国自然基金

ASD1(Activated SAM in Darkness1)调控植物暗形态建成中茎尖分生组织活性的分子机制研究
  • 批准号:
    31970824
  • 批准年份:
    2019
  • 资助金额:
    60.0 万元
  • 项目类别:
    面上项目

相似海外基金

CAREER: Diversity in the darkness: Integrating environmental genetics, comparative genomics, and citizen science to shed light on groundwater biodiversity
职业:黑暗中的多样性:整合环境遗传学、比较基因组学和公民科学,揭示地下水生物多样性
  • 批准号:
    2047939
  • 财政年份:
    2021
  • 资助金额:
    $ 26.46万
  • 项目类别:
    Continuing Grant
Holding off the Darkness: The Design of a Femtosecond Laser Pulse Delivery System for a Novel Treatment Method for Age-Related Macular Degeneration
抵御黑暗:飞秒激光脉冲传输系统的设计,用于治疗年龄相关性黄斑变性的新方法
  • 批准号:
    552782-2020
  • 财政年份:
    2020
  • 资助金额:
    $ 26.46万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Master's
The Sound of Darkness
黑暗之声
  • 批准号:
    2010015
  • 财政年份:
    2020
  • 资助金额:
    $ 26.46万
  • 项目类别:
    Standard Grant
Approaching the darkness of oral Helicobacter pylori: exploratory research on isolation / identification, infection mechanism, and persistent infection regulators
走近口腔幽门螺杆菌的黑暗:分离/鉴定、感染机制、持续感染调节因子的探索性研究
  • 批准号:
    19K22704
  • 财政年份:
    2019
  • 资助金额:
    $ 26.46万
  • 项目类别:
    Grant-in-Aid for Challenging Research (Exploratory)
Light from darkness: understanding extrasolar planets from their shadows
黑暗中的光明:从太阳系外行星的阴影中了解它们
  • 批准号:
    DP180100972
  • 财政年份:
    2018
  • 资助金额:
    $ 26.46万
  • 项目类别:
    Discovery Projects
Isolation/identification of novel darkness inducible cell death factors by forward genetics using autophagy-defective plants
使用自噬缺陷植物通过正向遗传学分离/鉴定新型黑暗诱导细胞死亡因子
  • 批准号:
    16H07255
  • 财政年份:
    2016
  • 资助金额:
    $ 26.46万
  • 项目类别:
    Grant-in-Aid for Research Activity Start-up
Insight from Darkness: Nanophotonics for real-time phase imaging
黑暗中的洞察:用于实时相位成像的纳米光子学
  • 批准号:
    DP160100983
  • 财政年份:
    2016
  • 资助金额:
    $ 26.46万
  • 项目类别:
    Discovery Projects
Research on pleasant darkness and brightness based on luminance distribution - Considering architectural and human factors-
基于亮度分布的宜人暗与明研究——考虑建筑和人文因素——
  • 批准号:
    15H06211
  • 财政年份:
    2015
  • 资助金额:
    $ 26.46万
  • 项目类别:
    Grant-in-Aid for Research Activity Start-up
Sensing of homogenous individuals in Shinkaia crosnieri living under darkness
生活在黑暗中的 Shinkaia crosnieri 中同质个体的感知
  • 批准号:
    15K14571
  • 财政年份:
    2015
  • 资助金额:
    $ 26.46万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Does complete darkness enhance the effects of monocular deprivation
完全黑暗是否会增强单眼剥夺的效果
  • 批准号:
    481572-2015
  • 财政年份:
    2015
  • 资助金额:
    $ 26.46万
  • 项目类别:
    University Undergraduate Student Research Awards
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了