AUTHOR=Wang Xiaolin , Wang Yong , Ling Aifeng , Guo Zhen , Asim Muhammad , Song Fupeng , Wang Qing , Sun Yanguo , Khan Rayyan , Yan Huifeng , Shi Yi TITLE=Rationale: Photosynthesis of Vascular Plants in Dim Light JOURNAL=Frontiers in Plant Science VOLUME=Volume 11 - 2020 YEAR=2020 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2020.573881 DOI=10.3389/fpls.2020.573881 ISSN=1664-462X ABSTRACT=The light dominates the earth’s climate and ecosystems via photosynthesis, fine changes of that might cause extensive material and energy alternation. The dim light (typically less than 5 μmol photons m-2 s-1) occurs widely in terrestrial ecosystems, whileand the frequency, duration, and extent of that are increasing because of climate change and urbanization. The dim light is important for the microorganism in the photosynthetic process, but omitted or unconsidered in the vascular high plant, because the photosynthesis in the high-light adapted of the vascular leaves was almost impossible. Here, in this review we propose limitations of photosynthesis in vascular plant leaves, then clarify elucidate the possibility and evidence of photosynthesis in terms of energy demand, stomatal opening, and photosynthetic induction and photosynthesis-related physiological processes in the dim light. This article highlights: the potential and noteworthy influence of the dim light on photosynthesis in vascular plant leaves light, and the research gap of the dim light in model application and carbon accounting.