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

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巨大变化的挑战，包括光强度的增加、光强度波动的增加、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无根的生活方式需要光感知与内源性发育程序相关联，以允许光适应生长和发育。因此，我们将研究苔藓藓类（Physcomitrium patens）和光响应中的光信号和叶片藻（Mesotaenium endlicherium），从而重点研究强光胁迫下的光保护、光形态发生和叶绿体发育。我们将研究两种转录因子，它们与p.p patens和m.p endlicherium中的COP1/SPA E3泛素连接酶相互作用，以确定可能早于植物陆地化的叶绿体发育、光形态发生、光保护和光调节基因表达网络的调控创新。

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.