Comparing phenotypic plasticity in bacterial prey traits and ecological consequences by using specialist vs. generalist strains and organic aggregates as model systems

通过使用专业菌株和通才菌株和有机聚集体作为模型系统,比较细菌猎物特征的表型可塑性和生态后果

基本信息

项目摘要

Changes in bacterial cell size, microcolony formation and attachment to particle/aggregate surfaces can be regarded as key traits of aquatic bacteria to counteract protozoan grazing and changes in environmental conditions, e.g. the availability of nutrients and organic matter. Thereby, specialist with a low phenotypic plasticity (non-plastic, either free or surface attached) can be distinguished from generalists with a high phenotypic plasticity (plastic, switching between free and surface-attached life stages). Trait plasticity can be induced (phenotypic plasticity; generalists) or inherited (rapid evolution; specialists). Theoretically changes of specialists with a low phenotypic plasticity (either free or attached) lead to pronounced predator-prey cycles, whereas generalists with a high phenotypic plasticity dampens these oscillations and hence stabilize the system. Models predict that generalists are favored by fluctuations in environmental parameters, e.g. ecosystem disturbances, but that their stabilizing effect leads to a preference of specialists. Yet, such differences in bacterial lifestyle have not been taken into account when experimentally analyzing predator-prey interactions and dynamics. Our proposal addresses the core question of DynaTrait, i.e. by which mechanisms the existing trait variation at the prey/predator levels influences the dynamics at both trophic levels, which then feeds back on the maintenance of trait variation. We will combine experimental and modelling enterprises to examine the (combined) effects of rapid evolution and phenotypic plasticity of antipredatory defense on predator-prey dynamics in chemostats. Instead of using only one predator with high phenotypic plasticity, we will use 2 predators with a narrow plasticity (a predator grazing free bacteria and a second predator feeding on surface-attached bacteria).Our work focus on the different bacterial lifestyles and hence physiological traits of specialist and generalist prey bacteria. We propose that generalist prey dampens predator prey cycles and thus stabilize the system. Stable environmental conditions should lead to dominance of non-plastic specialist prey (small trait range), whereas changing environments should favor plastic generalist prey (high trait range). Phenotypically plastic prey thus determines coexistence of 2 different specialist predators and changes in specialist to generalist bacteria ratio affect organic matter cycling efficiency and ecosystem functioning. The tight inter-linkage of chemostat experiments and modeling enterprises allows us to elucidating ecological and evolutionary patterns for generalization of interactions between microorganisms. In a second step we aim to link these patterns to organic matter cycling in the system. Thus we will use the trait based approach to better define to which extent phenotypic plasticity on the microorganism level feeds back to biodiversity and ecosystem function.
细菌细胞大小、微集落形成和附着在颗粒/聚集体表面的变化可以被视为水生细菌对抗原生动物放牧和环境条件变化的关键特征,例如营养物质和有机物的可用性。因此,具有低表型可塑性(非可塑性,自由或表面附着)的专家可以与具有高表型可塑性(可塑性,在自由和表面附着生命阶段之间切换)的通才区分开来。性状可塑性可以是诱导的(表型可塑性,通才)或遗传的(快速进化,专才)。从理论上讲,具有低表型可塑性(自由或依附)的专才的变化导致明显的捕食者-猎物周期,而具有高表型可塑性的通才抑制这些振荡,从而稳定系统。模型预测,多面手会受到环境参数波动(如生态系统扰动)的青睐,但它们的稳定效应会导致对专才的偏爱。然而,在实验分析捕食者-猎物相互作用和动态时,细菌生活方式的这种差异并没有被考虑在内。我们的建议解决了DynaTrait的核心问题,即在捕食者/猎物水平上存在的性状变异通过何种机制影响营养水平上的动态,然后反馈给性状变异的维持。我们将结合实验和建模企业来研究快速进化和表型可塑性的反掠食性防御对趋化动物捕食-猎物动态的影响。我们不再只使用一个具有高表型可塑性的捕食者,而是使用两个具有窄可塑性的捕食者(一个捕食自由细菌,另一个捕食表面附着的细菌)。我们的工作集中在不同的细菌生活方式和因此的生理特征的专业和通才猎物细菌。我们认为多面手的猎物抑制了捕食者的捕食周期,从而稳定了系统。稳定的环境条件会导致非可塑性特色型猎物(小性状范围)的优势,而变化的环境会导致可塑性通才型猎物(高性状范围)的优势。因此,表型可塑性猎物决定了两种不同专业捕食者的共存,而专业细菌与通用细菌比例的变化影响了有机物循环效率和生态系统功能。趋化实验和建模企业之间的紧密联系使我们能够阐明微生物之间相互作用的生态和进化模式。在第二步中,我们的目标是将这些模式与系统中的有机物循环联系起来。因此,我们将使用基于性状的方法来更好地定义微生物水平上的表型可塑性在多大程度上反馈给生物多样性和生态系统功能。

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 }}

Professor Dr. Hans-Peter Grossart其他文献

Professor Dr. Hans-Peter Grossart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('Professor Dr. Hans-Peter Grossart', 18)}}的其他基金

Ecological role of fungal parasites on benthic diatoms of polar coastal waters
极地沿海水域底栖硅藻真菌寄生虫的生态作用
  • 批准号:
    424170377
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Infrastructure Priority Programmes
Alternative states of a simple predator-prey system induced by competition between small edible and large inedible algae and fungal parasitism (APPS)
由小型可食用藻类和大型不可食用藻类之间的竞争以及真菌寄生引起的简单捕食者-猎物系统的替代状态(APPS)
  • 批准号:
    394716440
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Mortality of zooplankton in lake ecosystems and its contribution to vertical carbon fluxes (ZooFlux)
湖泊生态系统中浮游动物的死亡率及其对垂直碳通量的贡献(ZooFlux)
  • 批准号:
    319532628
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Evaluation and quantification of microbial degradation of allochthonous organic matter by "priming" (MicroPrime)
通过“引发”对异地有机物的微生物降解进行评估和定量(MicroPrime)
  • 批准号:
    256575941
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Revising the methane cycling in lakes: sources and sinks in two German lakes with specific consideration of methane accumulation in oxic waters
修改湖泊中的甲烷循环:德国两个湖泊的源和汇,特别考虑含氧水域中的甲烷积累
  • 批准号:
    241479293
  • 财政年份:
    2013
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Bacteria-zooplankton interactions: a key to understanding bacterial dynamics and biogeochemical processes in lakes?
细菌-浮游动物相互作用:了解湖泊细菌动力学和生物地球化学过程的关键?
  • 批准号:
    201319348
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Functional role and ecotype divergence in freshwater ultramicrobacteria
淡水超微生物的功能作用和生态型差异
  • 批准号:
    163678447
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Auswirkung interner Wellen auf mikrobielle Habitate kund Aktivitäten sowie den Stoffaustausch an der Wasser-Sediment-Grenzschicht des Stechlinsees
内波对施特奇林湖水-沉积物界面微生物栖息地、活动及物质交换的影响
  • 批准号:
    75711677
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Veränderungen in der Struktur und Funktion pelagischer Bakterien während und nach der Restauration des Tiefwarensees
蒂夫瓦伦湖恢复期间和恢复后中上层细菌结构和功能的变化
  • 批准号:
    39400205
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Effects of climate variability on interactions between cyanobacteria and associated microheterotrophs-consequences for development of toxic cyanobacterial blooms
气候变化对蓝藻和相关微型异养生物之间相互作用的影响——对有毒蓝藻水华发展的影响
  • 批准号:
    28750711
  • 财政年份:
    2006
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes

相似海外基金

Quantifying the impact of phenotypic plasticity on population persistence
量化表型可塑性对种群持久性的影响
  • 批准号:
    FT220100276
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    ARC Future Fellowships
CAREER: How do mixotroph phenotypic plasticity and adaptive evolution constrain climate feedbacks?
职业:混合营养表型可塑性和适应性进化如何限制气候反馈?
  • 批准号:
    2237017
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Phenotypic plasticity, genetic variation, and the origins of novel, complex traits
表型可塑性、遗传变异以及新颖、复杂性状的起源
  • 批准号:
    2306276
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Molecular and Cellular Mechanisms of Chromosome 18q23 Dysmyelination
染色体 18q23 髓鞘脱失的分子和细胞机制
  • 批准号:
    10592982
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
LTREB: Long-term provenance study of phenotypic plasticity, local adaptation, and response to climate in Quercus (Q-PLAD)
LTREB:栎树表型可塑性、局部适应和气候响应的长期起源研究 (Q-PLAD)
  • 批准号:
    2232794
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Alternative splicing as an evolutionary driver of phenotypic plasticity
选择性剪接作为表型可塑性的进化驱动力
  • 批准号:
    2884151
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Studentship
Molecular Mechanisms and Evolution of Phenotypic Plasticity
表型可塑性的分子机制和进化
  • 批准号:
    10326657
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
Cellular plasticity gives rise to phenotypic equilibrium in small cell lung carcinoma
细胞可塑性导致小细胞肺癌的表型平衡
  • 批准号:
    10525950
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
CAREER: Mechanisms regulating phenotypic plasticity in a highly social hermaphroditic fish
职业:高度社会性雌雄同体鱼类表型可塑性的调节机制
  • 批准号:
    2145398
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Escape from CAR T surveillance through lineage plasticity
通过谱系可塑性逃避 CAR T 监控
  • 批准号:
    10419173
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了