Institute of Organic Chemistry and Center for Molecular Biosciences, University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria.
Angew Chem Int Ed Engl. 2018 Nov 5;57(45):14937-14941. doi: 10.1002/anie.201807818. Epub 2018 Oct 11.
All structure-based information on chlorophyll (Chl) breakdown in the higher plants relies on studies with angiosperms. Herein, the first investigation of a fern is reported, revealing a novel type of Chl catabolites (phyllobilins) in leaves of this large division of the vascular plants, and providing structural insights into an astounding metabolic process of the higher plants that appears to have played a role even in early phases of plant evolution. The tetrapyrrolic Chl catabolites in the cosmopolitan bracken fern were discovered to be phyllobilin isomers with an unprecedented skeleton, proposed to be the striking result of a rearrangement of a hypothetical phyllobilin precursor.
所有关于高等植物叶绿素（Chl）分解的基于结构的信息都依赖于被子植物的研究。本文首次报道了对一种蕨类植物的研究，在该维管植物的叶片中发现了一种新型的叶绿素分解产物（叶啉），并为高等植物这一惊人代谢过程提供了结构上的见解，这一过程似乎在植物进化的早期阶段就发挥了作用。在分布广泛的蕨类植物中发现的四吡咯叶绿素分解产物是具有前所未有的骨架的叶啉异构体，据推测，这是一种假设的叶啉前体重排的惊人结果。
