深时地球锰矿物演化与产氧光合作用  

Evolution of Manganese-bearing Minerals in Deep-time Earth and Oxygenic Photosynthesis

作　　者：李艳[1] 庄子仪 叶欢 黎晏彰 贾昊凝 刘菲菲 丁竑瑞[1] 鲁安怀[1] LI Yan;ZHUANG Zi-yi;YE Huan;LI Yan-zhang;JIA Hao-ning;LIU Fei-fei;DING Hong-rui;LU An-huai(Beijing Key Laboratory of Mineral Environmental Function,School of Earth and Space Sciences,Peking University,Beijing 100871,China)

机构地区：[1]北京大学地球与空间科学学院矿物环境功能北京市重点实验室,北京100871

出　　处：《矿物岩石地球化学通报》2022年第2期203-212,共10页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金资助项目(42192500,91951114,41872042,91851208)。

摘　　要：地质历史时期锰氧化物矿物的出现早于产氧光合作用起源,锰矿物的成分与种类和地球环境呈现深时共演化关系。地表最普遍的锰氧化物——层状水钠锰矿与生物产氧光合作用中心Mn_(4)CaO_(5)团簇在化学成分、局域结构和性质功能上具有相似性,该现象使有机和无机界中Mn驱动的光反应得以紧密结合,锰氧化物因此很可能是光合产氧中心的雏形。在阳光照射的自然环境中,锰氧化物的光化学作用可收集并转化太阳能,在光照下裂解水产生氧气,因此在地质历史时期可能发挥着类似生物光合作用的矿物产氧功能。进一步揭示含锰矿物与环境因子协变关系及锰氧化物光催化分解水产氧活性机制,可为查明生物产氧光合作用起源与能量转化机制提供矿物学证据,为探索矿物-生物共演化和人工光合作用应用提供科学与技术突破的机遇。The emergence of manganese oxide minerals in geological history predates the origin of oxygenic photosynthesis,and the composition and species of manganese minerals presents a deep-time co-evolution relationship with the Earth environment.Layered birnessite,which is the most widespread manganese oxide on the Earth’s surface,shares similarities in chemical composition,local structure,properties and functions with the photosynthetic oxygen-evolving complex(OEC)named Mn_(4)CaO_(5)cluster.Therefore,manganese oxides are likely to be the embryonic form of photosynthetic OEC,which tightly couples the organic and inorganic worlds in manganese-driven photochemical reactions.In natural environments exposed to sunlight,the photochemistry of manganese oxides can harvest and convert solar energy,splitting water into oxygen under sunlight.As a result,mineral-induced oxygen evolution reactions may have played a parallel role of biological photosynthesis in geological history.Further work revealing the covariant relationship between manganese-bearing minerals and environmental factors and the mechanism of oxygen evolution reaction via manganese oxides is urgently required,which will facilitate systematical research and provide mineralogical evidence for the origin and energy transfer mechanism of OEC.Moreover,it will provide future opportunities for scientific and technological breakthroughs in the co-evolution of minerals and microorganisms and the application of artificial photosynthesis.

关 键 词：锰氧化物 产氧光合作用 深时 矿物—生物共演化 水钠锰矿 

分 类 号：P578.45[天文地球—矿物学]