Origin of resistance against desiccation and cryoinjuries in biological soil crust microalgae of High Arctic

高北极生物土壤结皮微藻抗干燥和低温损伤的起源

• 批准号: 492049859
• 负责人: Professor Dr. Burkhard Becker
• 金额: --
• 依托单位: Institut für Pflanzenwissenschaften
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/492049859?language=en
• 关键词: Origin; resistance; against; desiccation; cryoinjuries

This international project aims to understand the complex eco-physiological and molecular-genetic mechanisms of resistance of biological soil crusts (BSC) microalgae to stresses associated with the harsh Arctic conditions. The topic is relevant to the most urgent global problem, climate change, which is of particular importance in the Arctic. We generally expect that hardened and/or starved BSC microalgae will be more resistant to Arctic winter, melt-freeze cycles, cryostress and desiccation, compared to those growing under more favourable conditions. These physiological differences will be accompanied by morphological modifications and altered metagenomic and/or (meta)transcriptomic profiles, and metabolic pathways. The project will combine field observations and manipulation studies together with laboratory experiments and analyses in close co-operation of Czech and German partners. University of South Bohemia (USB) and Institute of Botany CAS (IB CAS) will provide the expertise on understanding the eco-physiology (hardening, starvation, cryoinjuries and desiccation stresses) of BSC microalgae on Svalbard over the whole period of a year. Insitut for Plant Sciences, University of Cologne (IfP UC) will provide the expertise to study the same BSCs microalgae with respect to description of molecular genetic principles of their hardening, starvation, cryoinjuries and desiccation stresses resistances through metagenomic and (meta)transcriptomic analyses. Unique combination of molecular biology and algal physiology methods together with field studies will allow complex insight into survival strategies of BSC microalgae, from sub-cellular to community levels.

该国际项目旨在了解生物土壤外壳耐药性（BSC）微藻对与恶劣北极条件相关的压力的复杂生态生理和分子遗传学机制。该主题与最紧迫的全球问题，气候变化有关，气候变化在北极特别重要。我们通常认为，与在更有利的条件下生长的人相比，经过硬化和/或饥饿的BSC微藻将对北极冬季，熔融冻结周期，冷冻效果和干燥性更具耐药性。这些生理差异将伴随形态学修饰，并改变了元基因组和/或（元）转录组谱以及代谢途径。该项目将将现场观察和操纵研究与实验室实验结合在一起，并在捷克和德国合作伙伴的密切合作中进行分析。南波西米亚大学（USB）和植物学研究所（IB CAS）将在整个一年内在SVALBARD上提供有关BSC Microalgae的生态生理学（硬化，饥饿，冷冻压力和干燥胁迫）的专业知识。对于植物科学的滴灌，科隆大学（IFP UC）将提供专业知识，以研究对其硬化，饥饿，冷冻工作和干燥的分子遗传学原理的描述相同的BSCS微藻，以及通过核和（META）转录组分析的耐药性。分子生物学和藻类生理方法的独特组合以及现场研究将使从亚细胞到社区水平的BSC微藻的生存策略进行复杂的了解。