Schroda Michael, Hemme Dorothea, Mühlhaus Timo
Molecular Biotechnology & Systems Biology, TU Kaiserslautern, Paul-Ehrlich-Straße 23, 67663, Kaiserslautern, Germany.
Plant J. 2015 May;82(3):466-480. doi: 10.1111/tpj.12816. Epub 2015 Mar 27.
Heat waves occurring at increased frequency as a consequence of global warming jeopardize crop yield safety. One way to encounter this problem is to genetically engineer crop plants toward increased thermotolerance. To identify entry points for genetic engineering, a thorough understanding of how plant cells perceive heat stress and respond to it is required. Using the unicellular green alga Chlamydomonas reinhardtii as a model system to study the fundamental mechanisms of the plant heat stress response has several advantages. Most prominent among them is the suitability of Chlamydomonas for studying stress responses system-wide and in a time-resolved manner under controlled conditions. Here we review current knowledge on how heat is sensed and signaled to trigger temporally and functionally grouped sub-responses termed response elements to prevent damage and to maintain cellular homeostasis in plant cells.
由于全球变暖，热浪出现的频率增加，危及作物产量安全。应对这一问题的一种方法是通过基因工程使作物植物提高耐热性。为了确定基因工程的切入点，需要深入了解植物细胞如何感知热应激并做出反应。使用单细胞绿藻莱茵衣藻作为模型系统来研究植物热应激反应的基本机制有几个优点。其中最突出的是莱茵衣藻适合在可控条件下以全系统和时间分辨的方式研究应激反应。在这里，我们综述了目前关于热如何被感知和信号传导以触发在时间和功能上分组的子反应（称为反应元件），从而防止植物细胞受损并维持细胞内稳态的知识。
