Ecological forces driving the loss of photosynthesis in phytoplankton: Molecular and morphological adaptations to heterotrophy

导致浮游植物光合作用丧失的生态力量：异养的分子和形态适应

• 批准号: 200605584
• 负责人: Professor Dr. Jens Boenigk
• 金额: --
• 依托单位: Arbeitsgruppe Biodiversität
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/200605584?language=en
• 关键词: Ecological; forces; driving; loss; photosynthesis

The differentiation of nutritional strategies (phototrophic, mixotrophic, phagotrophic) is one of the most obvious functional differences among organisms and strongly influences the carbon and element flows. All major algal lineages comprise numerous examples of "colourless algae". We address the molecular and morphological adaptations to heterotrophy using chrysophytes as model organisms to conclude on ecological causes of the loss of phototrophic abilities. We will further test the competitive strength of heterotrophic and mixotrophix chrysophytes under different conditions in a series of laboratory experiments. The project brings together the expertise of working groups covering algal diversity and phylogeny, ultrastructure and cell biology, and genome and transcriptome analyses with special reference to the evolution of photopigments. It is further independent but closely linked to a proposal submitted in parallel by U. Gaedke. It will provide basic insights into the scenarios behind the (multifold) separation into phototrophic and heterotrophic lineages and elucidate environmental conditions favouring this differentiation.

营养策略的差异（光养型、混合营养型、吞噬营养型）是生物体之间最明显的功能差异之一，强烈影响碳和元素的流动。所有主要的藻类谱系都包含许多“无色藻类”的例子。我们使用金藻作为模式生物来研究异养的分子和形态适应，以得出光养能力丧失的生态原因。我们将通过一系列的实验室实验进一步检验异养和混养金藻在不同条件下的竞争实力。该项目汇集了各工作组的专业知识，涵盖藻类多样性和系统发育、超微结构和细胞生物学、基因组和转录组分析，特别是感光色素的进化。它更加独立，但与 U. Gaedke 并行提交的提案密切相关。它将提供对光养谱系和异养谱系（多重）分离背后的情况的基本见解，并阐明有利于这种分化的环境条件。