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Oxygenic phototrophs have played a fundamental role in Earth's history by enabling the rise of atmospheric oxygen (O ) and paving the way for animal evolution. Understanding the origins of oxygenic photosynthesis and Cyanobacteria is key when piecing together the events around Earth's oxygenation. It is likely that photosynthesis evolved within bacterial lineages that are not extant, so it can be challenging when studying the early history of photosynthesis. Recent genomic and molecular evolution studies have transformed our understanding about the evolution of photosynthetic reaction centres and the evolution of Cyanobacteria. The evidence reviewed here highlights some of the most recent advances on the origin of photosynthesis both at the genomic and gene family levels.
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http://dx.doi.org/10.1111/nph.16249 | DOI Listing |
ISME J
September 2025
Institute of Molecular Biology, Academia Sinica, Taipei, 11529, Taiwan.
Mutualistic endosymbiosis is a cornerstone of evolutionary innovation, enabling organisms to exploit diverse niches unavailable to individual species. However, our knowledge about the early evolutionary stage of this relationship remains limited. The association between the ciliate Tetrahymena utriculariae and its algal endosymbiont Micractinium tetrahymenae indicates an incipient stage of photoendosymbiosis.
View Article and Find Full Text PDFPLoS One
September 2025
Museum of Natural History and Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado, United States of America.
Diatoms are pivotal in global oxygen, carbon dioxide, and silica cycling, contributing significantly to photosynthesis and serving as fundamental components in aquatic ecosystems. Recent advancements in genomic sequencing have shed light on their evolutionary dynamics, revealing evolutionary complex genomes influenced by symbiotic relationships and horizontal gene transfer events. By analyzing publicly available sequences for 120 plastomes and 70 mitogenomes, this paper aims to elucidate the evolutionary dynamics of diatoms across diverse lineages.
View Article and Find Full Text PDFChem Commun (Camb)
September 2025
Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Precision and Intelligent Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
Solar-driven hydrogen peroxide (HO) production offers a green and sustainable alternative to the energy-intensive anthraquinone process, utilizing water and oxygen as feedstock and solar energy as the sole input. Covalent organic frameworks (COFs), owing to their well-defined crystalline structures and tunable electronic properties, have emerged as a compelling platform for photocatalytic HO synthesis. However, the efficiency of HO photosynthesis remains limited by sluggish charge separation and rapid carrier recombination.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2025
School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, 243000, China.
The photocatalytic efficiency of two-dimensional covalent organic frameworks (2D COFs) is governed by the spatial arrangement of donor-acceptor (D-A) moieties, which strongly influences exciton transport. However, precise control over D-A alignment, especially across intra- and interlayer dimensions, remains a key challenge for optimizing singlet oxygen (O) generation. Here, we present a linker geometry-directed approach to modulate D-A organization within perylene diimide (PDI)-based COFs.
View Article and Find Full Text PDFInorg Chem
September 2025
College of Chemistry, Changchun Normal University, Changchun 130032, P. R. China.
Development of novel photocatalysts for hydrogen peroxide (HO) production from water and oxygen is gathering great attention, but still suffers from inefficient photogenerated charge mobility. Reticular chemistry in metal-organic frameworks (MOFs) provides a promising platform to enhance the charge-transfer kinetics by assembling a donor-acceptor (D-A) system. Here, we designed and synthesized a series of D-A type MOFs (UiO-67-NB, UiO-67-PE/BB, and UiO-67-PE/NB) via regulating the interaction mode of donor and acceptor.
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