Photosynthesis
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Scientists got mouse eyes to perform photosynthesis — and no, they didn't turn green
Scientists got mouse eyes to perform photosynthesis — and no, they didn't turn green Special eye drops containing photosynthetic machinery from spinach leaves have helped combat dry eye, a new mouse experiment reveals. Scientists have developed new eye drops that allow mouse eyes to perform certain steps of photosynthesis. The drops, which contain photosynthetic machinery extracted from spinach leaves, use light-driven reactions to improve symptoms of dry eye disease, according to a study...
Why plant cells need heme: Hidden signal reshapes photosynthesis gene control
Why plant cells need heme: Hidden signal reshapes photosynthesis gene control Sadie Harley Scientific Editor Andrew Zinin Lead Editor For plants, light is an important environmental factor not only as a source of energy for photosynthesis, but also as a signal for capturing environmental information. Light signals are sensed by photoreceptor proteins called phytochromes. The amino acids that make up proteins are transparent and cannot absorb visible light.
Hidden protein switch controls photosynthesis as light conditions change
Hidden protein switch controls photosynthesis as light conditions change Andrew Zinin Lead Editor Scientists have discovered a previously unknown regulatory mechanism in plant photosynthesis in the unicellular green alga Chlamydomonas reinhardtii. It helps plants adapt to changes in light conditions. The results, published in the journal Nature Plants, show how a crucial protein interaction at the interface between photosystems I and II controls the photosynthetic machinery.
Diel metabolic plasticity of CAM photosynthesis in MD-2 pineapple (Ananas comosus) under contrasting tropical environments: biochemical patterns and agronomic implications.
Abstract The current understanding of Crassulacean Acid Metabolism (CAM), including semi-controlled studies in pineapple, does not fully explain outcomes observed under commercial field conditions. Although empirical agronomy confirms a strong climatic influence on growth and development, mechanistic explanations at the metabolic level particularly for photosynthate allocation remain scarce. This study evaluated how environmental variation affects diel CAM outputs and how such effects can be...
Chloroplast map reveals 'missing link' in plant growth and solar energy
For decades, science has understood the basics of photosynthesis, the process by which plants turn sunlight into food. However, photosynthesis occurs on uniquely specialized membranes that we have only begun to understand. These must be continually assembled, remodeled and repaired as plants grow and respond to stress.
Plants boost carbon uptake through water efficiency, not heat adaptation, global analysis reveals
Plants boost carbon uptake through water efficiency, not heat adaptation, global analysis reveals Gaby Clark Scientific Editor Robert Egan Associate Editor An international team of scientists has discovered that plants are not responding to global warming in the way researchers long assumed. Scientists have expected that ecosystems would keep pace with warming by rising the temperature at which photosynthesis works best. A new study published in One Earth is challenging that theory.
Houseplant hacks: does talking to your plants help them grow?
The theory is that breathing near your plants releases carbon dioxide, boosting photosynthesis and growthThe problem We’ve all done it. Walked past a drooping fern, crouched down and given it a few encouraging words (whether you admit it to other people is a different matter). We are told it’s actually good for our plants, so should we all be chatting away to them to help them thrive?The hack Speaking to your plants is said to encourage growth.
Loss of PSAE redirects PGRL1 to photosystem I and enhances PGR5-dependent cyclic electron transfer in Arabidopsis
Electrons energised by light energy at photosystem I (PSI) primarily enter the linear photosynthetic electron transfer (LET) or cyclic electron transfer (CET) pathway. The balance between LET and CET activity is a crucial factor in the regulation of photosynthesis, since CET increases the stoichiometry of proton to electron transfer. The additional transmembrane proton gradient ({Delta}pH) triggers feedback control of light harvesting and electron transfer photoprotection via...
Ancient land plant reveals the evolution of a 400‑million‑year‑old UV‑B protection system
Sunlight provides the energy necessary for photosynthesis and growth, but it also exposes plants to harmful ultraviolet-B (UV-B) radiation. Plants must therefore strike a delicate balance between growth and protection. By studying Marchantia polymorpha, a plant similar to some of the earliest land plants, an international team led by scientists from the University of Geneva (UNIGE) sheds light on the evolution of fundamental UV-B perception mechanisms and plant adaptation strategies to light...
Warming unlocks ancient carbon in Tibetan permafrost, triggering climate tipping point
Warming unlocks ancient carbon in Tibetan permafrost, triggering climate tipping point Tejasri Gururaj Author Stephanie Baum Scientific Editor Robert Egan Associate Editor A new study in Nature Communications finds a critical climate tipping point in Tibetan permafrost ecosystems. Warming of 2–4 degrees Celsius triggers a self-reinforcing cycle of carbon release that could significantly accelerate climate change, according to the work. Permafrost covers roughly 15% of the Northern...