Researchers Discover Quantum Switch For Regulating Photosynthesis https://thequantuminsider.com/?p=2358217 #Research #bioengineering #cryoEM #LHCII #lightharvesting #photosynthesis #plants #quantum_channel #quantumdaily Insider Brief Researchers identify the photosynthetic pigment quantum switch for intermolecular energy transfer. They studied light-harvesting complex II (LHCII) is a complex of pigment molecules bound to proteins. A rapid response to changes in light intensity causes both high

Researchers discover #quantum switch for regulating #photosynthesis.

https://phys.org/news/2023-09-quantum-photosynthesis.html

#AirPollution greatest global #Threat to human #Health, says benchmark study : Phys.org

#Tropical #Forests May Be Getting Too Hot for #Photosynthesis ($): Sci Am

The 13 #Scales that define our physical #Universe : Medium

Check our latest #KnowledgeLinks

https://knowledgezone.co.in/resources/bookmarks

When #Plants Can No Longer Stand the Heat, We’re in Trouble
#Rainforest study: Scientists now know the temperature at which #photosynthesis stops
Heat is just one of many stressors for the world’s beleaguered Amazon. https://grist.org/extreme-heat/rainforest-study-scientists-now-know-the-temperature-at-which-photosynthesis-stops/ #climatechange #climatecrisis

@Bluedepth And the limit for human sustainability is wet bulb 35 °C!

#today #til #climate #photosynthesis #TheGreen

Rainforest study: Scientists now know the temperature at which photosynthesis stops

https://grist.org/extreme-heat/rainforest-study-scientists-now-know-the-temperature-at-which-photosynthesis-stops/

Heat is just one of many stressors for the world’s beleaguered Amazon.

#amazon #study #scientists #photosynthesis #temperature #ecocollapse

Weekend #Plankton #Factoid 🦐🦠

Not all #autotrophs fix carbon through #photosynthesis. Some #bacteria (lithoautotrophs) use the minerals leached from rock for energy. Acidithiobacillus ferrooxidans metabolizes pyrite with oxygen to produce sulfites and sulfuric acid. This causes Acid Mine Drainage #AMD in #streams that drain old coal mines. This *very acidic discharge is oxidized as it contacts air, turning iron bright orange (rust), and contains many #toxic metals.
https://uwaterloo.ca/wat-on-earth/news/acid-mine-drainage-past-presentfuture

#climatechange #climatecrisis #fossilfuels #oilcompanies #banfossilfuels #carbon #heatwave #CapitalismKills #Capitalism #Environment #rainforest #photosynthesis #Oxygen

https://news.slashdot.org/story/23/08/24/2340209/tropical-rainforests-could-get-too-hot-for-photosynthesis-scientists-warn

AAAS: "Heat could halt photosynthesis." In a worst-case outcome with rising temperatures, Global Mean Surface Temperature reaching 3.9ºC, tropical forest photosynthesis may grind to a halt. "Researchers used an instrument on the International Space Station to estimate peak canopy temperatures between 2018 and 2020, + also gathered data with ground-level sensors attached to individual leaves. "Already, 0.01% of tree leaves surpass a critical temperature at which photosynthesis begins to fail, about 46.7°C." Study is published in Nature this week. But I suspect we'd have many more issues than this one if the world gets that warm. It's already a hot time in the old town tonight.   #heatwaves    #photosynthesis    #climatechange

I've been warning about the temperature limits of #photosynthesis for some time now.

These are hard limits based on chemistry and physics.

#ClimateEmergency

https://www.scientificamerican.com/article/tropical-forests-may-be-getting-too-hot-for-photosynthesis/

It's a #worry #climatecrisis #photosynthesis

https://www.sciencealert.com/photosynthesis-may-be-failing-in-the-tropics-as-temperatures-soar

NEW!
Bridging #Photosynthesis and #Crop #Yield Formation with a Mechanistic #Model of Whole Plant Carbon-Nitrogen Interaction
https://doi.org/10.1093/insilicoplants/diad011

Study suggests rise in global photosynthesis rate due to increase in carbon dioxide has slowed https://phys.org/news/2023-08-global-photosynthesis-due-carbon-dioxide.html
#photosynthesis #CO2

Higher CO2 levels in the air have reduced the global #photosynthesis rate because they have also made the #atmosphere drier. This has reduced its slowing effect on #globalwarming.
https://phys.org/news/2023-08-global-photosynthesis-due-carbon-dioxide.html

Study suggests rise in global #photosynthesis rate due to increase in #carbon_dioxide has slowed.

#climatechange

https://phys.org/news/2023-08-global-photosynthesis-due-carbon-dioxide.html

#Microalgae can #detoxify #methylmercury, study finds.

#dark_reactions #photosynthesis

https://phys.org/news/2023-08-microalgae-detoxify-methylmercury.html

Geostationary #satellite reveals widespread midday depression in dryland #photosynthesis during 2020 #heat_wave.

#climate_change #water_stress #remote_sensing #plants

https://phys.org/news/2023-08-geostationary-satellite-reveals-widespread-midday.html

Perspectives call for engineering #photosynthesis to increase carbon capture and increase food production, for using #SyntheticBiology to enhance climate resilience in plants & garnering public support, to consider how the #microbiome of cropland soils could be manipulated to accelerate soil #carboncapture, and for more & better public–private partnerships in #crop research

#ClimateChange #plants #engineering #sustainability #sustainabledevelopmentgoals #foodsecurity
https://plos.io/3pTSI6U

What are the most efficient plants for capturing CO2?

Google tells me it is the oak tree, but that considers the long term balance and assumes that the plant is just left growing, storing carbon as wood.

I am asking instead for a plant that would be periodically harvested, the tissues being turned into charcoal by oxygen-free pyrolysis and buried.

#CarbonCapture #Charcoal #Photosynthesis

“Using statistics on the distribution of the diatoms and other phytoplankton with the extra membrane throughout the global ocean, the researchers extrapolated that this boost in efficiency from the VHA membrane protein accounts for almost 12% of Earth’s atmospheric oxygen. It also contributes between 7% and 25% of all the oceanic carbon fixed each year. That’s at least 3.5 billion tons of carbon — almost four times as much as the global aviation industry emits annually. At the high end of the researchers’ estimate, VHA could be responsible for tying up as much as 13.5 billion tons of carbon a year.”

— Saugat Bolakhe, Microbes Gained Photosynthesis Superpowers From a ‘Proton Pump’, in Quanta Magazine https://www.quantamagazine.org/microbes-gained-photosynthesis-superpowers-from-a-proton-pump-20230705/

📄 Daniel P. Yee et al. The V-type ATPase enhances photosynthesis in marine phytoplankton and further links phagocytosis to symbiogenesis
🔗 https://doi.org/10.1016/j.cub.2023.05.020 (open access)

#Science #Biology #Metabolism #Diatoms #Phytoplankton #Photosynthesis #Evolution