What is the significance of oxygen release in photosynthesis of plants?
Best insight from top research papers
Oxygen release in photosynthesis is crucial for various aspects. It aids in reducing carbon dioxide levels and increasing oxygen content in closed spaces, benefiting human health and reducing emissions . Photosystem II plays a vital role in oxygen evolution during photosynthesis, providing the oxidizing power essential for biological energy utilization . The oxygen-evolving complex in plants splits water to generate protons and electrons, fueling ATP and NADPH production for plant metabolism . Studies suggest that photosynthetic oxygen release influences energy states, metabolic activities, and lipid biosynthesis in developing soybean seeds, highlighting its role in seed development . Mechanisms of O-O bond formation and oxygen release during photosynthesis are still debated, with the oxyl-oxo radical coupling mechanism in the "open-cubane" state being favored for O-O bond formation .
Answers from top 5 papers
More filters
| Papers (5) | Insight |
|---|---|
93 Citations | Photosynthetic oxygen release in plants, like soybeans, plays a crucial role in energy supply, metabolic fluxes, and lipid biosynthesis in developing seeds, enhancing storage activity and ATP levels. |
| Oxygen release in photosynthesis, facilitated by PSII, is crucial for sustaining life on Earth. It involves O-O bond formation through spin-exchange and coordination interactions, enhancing the process. | |
6 Citations | Oxygen release in photosynthesis provides protons, electrons, ATP, and NADPH for plant metabolism, serving as the energy source and reducing power essential for plant growth and development. |
| Oxygen release in plant photosynthesis reduces carbon dioxide, increases oxygen content in spaces, aids in reducing emissions, and enhances agriculture and forestry yield and income. | |
Open access 01 Jan 2003 4 Citations | Oxygen release in photosynthesis provides oxidizing power crucial for biological energy utilization. Photosystem II, with a manganese cluster and TyrZ, plays a key role in oxygen evolution. |
Related Questions
What is copper's role in photosynthesis in plants?10 answersCopper (Cu) plays a pivotal role in the photosynthetic process of plants, acting as an essential micronutrient involved in various physiological and biochemical processes. It serves as a cofactor for a multitude of enzymes, significantly contributing to photosynthesis, respiration, the antioxidant system, and signal transduction. Copper's involvement in photosynthesis is primarily through its role in the electron transport chain within chloroplasts, where it is a critical component of plastocyanin, a protein that transfers electrons to photosystem I. This process is vital for the photoautotrophic growth of plants, highlighting copper's indispensable role in the photosynthetic machinery.
However, the beneficial effects of copper are dose-dependent. While essential in small amounts, excess copper can lead to toxicity, adversely affecting plant growth, photosynthesis, and overall plant health. Excess copper can inhibit photosynthetic processes by damaging the photosystem II (PSII) function, except for the oxygen-evolving complex, and by decreasing chlorophyll content, which is crucial for capturing light energy. It also interferes with the normal functioning of photosynthetic enzymes and induces oxidative stress, leading to the production of reactive oxygen species (ROS) that can damage cellular components.
Plants have developed sophisticated regulatory networks to manage copper homeostasis, ensuring that copper levels are maintained within a narrow range that supports essential physiological processes without causing toxicity. These mechanisms include the regulation of copper uptake, chelation, trafficking, and storage within chloroplasts to meet the high demand for transition metals in photosynthetic organisms while preventing metal-induced toxicity. Understanding the dual role of copper—as both a critical cofactor in photosynthesis and a potential source of toxicity—underscores the importance of maintaining copper homeostasis for optimal plant health and productivity.
What is the scientific explanation behind the role of water in photosynthesis?5 answersWater plays a crucial role in photosynthesis by being oxidized to molecular oxygen, a process essential for life on Earth. In oxygenic photosynthesis, photosystem II (PSII) contains a Mn4CaO5 cluster that facilitates water oxidation, with a tyrosine residue transferring oxidizing equivalents. Liquid crystalline water at interfaces enables water to split into hydrogen and oxygen during photosynthesis, providing energy for the biosphere. The enzyme at the heart of photosynthesis oxidizes water, generating oxygen as a byproduct. Additionally, the waterwater cycle in chloroplasts involves the photoreduction of dioxygen to water, linking the electron transfer from photosystem II to photosystem I. Understanding water photodissociation, particularly the formation of the OH radical, is crucial for comprehending water's role in the chemistry of Earth's atmosphere and interstellar space.
What happens during photosynthesis?5 answersPhotosynthesis is the process by which solar energy is converted into chemical energy in plants, algae, and cyanobacteria. During photosynthesis, light energy is absorbed by pigments such as chlorophyll, which then transfers the energy to the photosynthetic reaction center. In the reaction center, the absorbed energy is converted into electrochemical energy through a rapid charge separation process. This energy is used to extract electrons from water, producing oxygen as a byproduct. The electrons are then transported through an electron transport chain, generating a proton concentration gradient across the membrane. This gradient is used to produce ATP, a molecule that stores energy. Additionally, the electrons are used to reduce NADP+ to NADPH, which is used in the synthesis of carbohydrates. Photosynthesis is a vital process that links solar energy to the production of energy-rich molecules needed for life.
What is the role of stem photosynthesis in tree growth?3 answersStem photosynthesis plays a significant role in tree growth. It allows the stem to assimilate carbon dioxide (CO2) and produce sugars and starch, contributing to the overall carbon balance of the tree. This internal CO2 fixation occurs in the greenish tissues within the stem, known as chlorenchymes, which contain chloroplasts capable of photosynthesis. Stem photosynthesis can compensate for a substantial portion of respiratory carbon loss, re-fixing 60-90% of the CO2 released from respiration. Additionally, stem photosynthesis is closely related to stem respiration and sap flow, positively contributing to the carbon income of the trunk. It also plays a role in maintaining the integrity of the tree's overall carbon balance by regulating the storage and remobilization of sugars within the stem. Overall, stem photosynthesis is an essential physiological process that supports tree growth and carbon allocation.
How plant produce oxygen?3 answersPlants can produce oxygen through various methods. One method involves cryogenic air separation, where a plant comprises a high-pressure column, a low-pressure column, and a main condenser. An argon-elimination column is connected to the low-pressure column and an argon-elimination column head condenser. An auxiliary column is connected to a return flow liquid line and receives a liquid stream with an oxygen content equal to or higher than that of air. The crude liquid oxygen from the high-pressure column is fed to the auxiliary column. The pressure in the head of the auxiliary column is higher than the pressure in the head of the low-pressure column. Another method involves electrolysis of water, where water is decomposed into oxygen and hydrogen fractions. The resulting oxygen can be used in power plants, and the water can be recycled for subsequent electrolysis. Additionally, a device has been developed that uses solar energy to heat air and an absorbent membrane, separating oxygen and nitrogen from the air. There is also a plant that enriches oxygen through electrolysis, producing oxygen with high purity. Finally, an adsorption plant can separate air and obtain a gas mixture with increased oxygen content.
What is oxygenation in plant farming?5 answersOxygenation in plant farming refers to the process of providing plants with oxygen. This is important for the growth and development of plants, as oxygen is necessary for various metabolic processes. Oxygenation devices are used in intensive farming to ensure effective oxygenation of plants. These devices typically involve a casing with different chambers and an ejector system to facilitate the flow of oxygen. The energy consumption of these devices is low, making them efficient for oxygenation in intensive farming. In commercial cultivation, oxygenation pipes embedded in the support medium for plant roots are used to supply oxygen. The rate of oxygenation can be automatically adjusted based on the amount of photosynthetically active radiation incident on the plants. Additionally, plant irrigation, oxygenation, and feeding devices are used, which allow the passage of air and water from the interior to the exterior of the device while preventing the entry of ground water.