Chlorophyll is a class of magnesium-coordinated porphyrin pigments that function as primary photoreceptors in oxygenic photosynthesis. Its conjugated tetrapyrrole ring system enables efficient absorption of visible light, predominantly in the blue and red regions, while reflecting green wavelengths. In thylakoid membranes, chlorophylls (mainly chlorophyll a and b in plants) are noncovalently associated with specific apoproteins to form light-harvesting complexes and reaction centers, where they participate in exciton transfer and primary charge separation. Their redox-active macrocycle and central Mg²⁺ ion are critical for converting photon energy into chemical potential within photosystems I and II.
Here's a thought experiment. Imagine looking at Earth from a distant star system, armed with a powerful telescope capable of capturing its reflected light. Could you tell the planet was alive? The answer, remarkably, might ...
Astrobiology
7 hours ago
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Researchers from several Parisian institutions have worked together to develop a non-destructive approach to study how unicellular organisms respond to stress, focusing on cell-to-cell differences. Working together, the researchers ...
Biotechnology
Mar 24, 2026
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A research team led by Profs. Li Jing and Liu Qinhuo from the Aerospace Information Research Institute of the Chinese Academy of Sciences (AIRCAS) has developed the world's first global, high-resolution map of leaf chlorophyll ...
Environment
Jan 21, 2026
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Recently published research in the journal Weed Science shows that waterhemp resistance to protoporphyrinogen oxidase inhibitor (PPO) herbicides can develop from soil-applied preemergence applications, and not just from postemergence ...
Plants & Animals
Oct 23, 2025
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From mushrooms that cast a soft green glow to plankton that glimmers sparkling blue, glowing plants are nothing new to nature. Now, scientists are bringing that light to houseplants.
Plants & Animals
Aug 27, 2025
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A research team led by Prof. Liu Xuncheng at the South China Botanical Garden of the Chinese Academy of Sciences has shed new light on how plants fine-tune their response to far-red light.
Plants & Animals
Aug 20, 2025
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The progression of leaf coloring from green to the reds, oranges, and yellows of the fall season can be a spectacular sight to behold, but this process is also an important part of a plant's developmental cycle.
A newly discovered pathway in a plant process could help farmers grow more successful crops, particularly in places where harsh, high light stresses plants.
Cell & Microbiology
Jul 18, 2025
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Photosystem II (PSII) is the only biological machine capable of splitting water into oxygen using sunlight. It plays a fundamental role in global oxygen production and solar energy conversion. However, PSII is highly prone ...
Plants & Animals
Jul 8, 2025
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A set of breakthroughs from scientists at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) is offering a new understanding of how energy flows through one of nature's most important molecular ...
Plants & Animals
Jul 8, 2025
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