Molecular adaptations to light during the water-to-land transition using the moss Physcomitrium patens and the charophyte alga Mesotaenium endlicherianum

使用苔藓 Physcomitrium patens 和轮藻 Mesotaenium Finalerianum 在从水到陆地的过渡过程中对光的分子适应

• 批准号: 440235374
• 负责人: Professorin Dr. Ute Höcker
• 金额: --
• 依托单位: Arbeitsgruppe Höcker
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/440235374?language=en
• 关键词: Molecular; adaptations; light; during; water

Upon the transition from aquatic to terrestrial life, green organisms were challenged by vastly altered ambient light conditions, including an increase in the intensity of light, an increase in the fluctuation of light intensity, a change in the light spectrum and eventually also canopy shade. Moreover, the newly evolved plant complexity and sessile life style necessitated that light perception be interconnected with endogenous developmental programs to allow light-adapted growth and development. We will therefore study light signaling and light responses in the moss Physcomitrium patens and in the charophyte alga Mesotaenium endlicherianum, thereby focusing on photoprotection towards high light stress, photomorphogenesis and chloroplast development. We will study two transcription factors that interact with the COP1/SPA E3 ubiquitin ligase in P. patens and M. endlicherianum in order to identify innovations in the regulation of chloroplast development, photomorphogenesis, photoprotection and light-regulated gene expression networks that may have predated plant terrestrialization.

在从水生生物过渡到陆地生物的过程中，绿色生物受到了环境光条件的巨大变化的挑战，包括光强度的增加、光强度的波动增加、光谱的变化以及最终的树冠阴影。此外，新进化的植物复杂性和固执型生活方式要求光感知与内源发育程序相互联系，以允许光适应生长和发育。因此，我们将研究丛生苔藓和轮藻中的光信号和光响应，从而重点研究对强光胁迫的光保护、光形态建成和叶绿体发育。我们将研究两个与P.patens和M.endlicherianum中的COP1/SPA E3泛素连接酶相互作用的转录因子，以确定在调控叶绿体发育、光形态建成、光保护和光调控基因表达网络方面的创新可能早于植物的陆系化。