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Photosynthesis in Biological News

Ozone, nitrogen change the way rising CO2 affects Earth's water

... the effects of nitrogen limitation and ozone on photosynthesis can lead us to underestimate regional runoff," ... naturally through transpiration, the tail end of photosynthesis when water vapor and oxygen are released into the ... responsible for photosynthesis. Reductions in photosynthesis leads to less transpiration and cycling of water ...

Pliable proteins keep photosynthesis on the light path

... photosynthesis is a remarkable biological process that supports ... Columbia, has come up with a surprising twist to photosynthesis by swapping a key metal necessary for turning ... similar to photosystem II. The center stage of photosynthesis is the reaction center, where light energy is ...

DOE makes largest Danforth Campus research award in history

... tremendous strength of research related to algae, photosynthesis and biofuels that is underway in the St. Louis ... a worldwide center for bioenergy research." photosynthesis transforms light, carbon dioxide and water into ... of all aspects of plant metabolism from photosynthesis to the synthesis and accumulation of oils and ...

ISU researcher identifies protein that concentrates carbon dioxide in algae

... CO 2 is vital to growth. It fuels their photosynthesis process that, along with sunlight, manufactures ... of biofuels raises the possibility of increasing photosynthesis and productivity in microalgae by increasing ... and put it into something like rice and improve photosynthesis for rice," said Spalding. Rice and other ...

Turning sunlight into liquid fuels

... For millions of years, green plants have employed photosynthesis to capture energy from sunlight and convert it ... has been to develop an artificial version of photosynthesis that can be used to produce liquid fuels from ... the two essential half reactions of an artifical photosynthesis system - it provides the electrons needed to ...

Engineering algae to make fuel instead of sugar

... needed to harvest light without compromising the photosynthesis process in the cells. With this modification, ... scientists want to divert the normal function of photosynthesis from generating biomass to making products such ... fuels. Further improvement in the performance of photosynthesis under mass culture conditions, and in the yield ...

Plants grow bigger and more vigorously through changes in their internal clocks

... their parents because many of their genes for photosynthesis and starch metabolism are more active during the ... is the increased expression of genes involved in photosynthesis and starch metabolism in hybrids and polyploids. ... and polyploids, leading to increases in their photosynthesis and starch accumulation. "This connection was ...

Giant grass offers clues to growing corn in cooler climes, researchers report

... sun's energy even as cool temperatures shut down photosynthesis in other plants. In Illinois, green ... grown in warmer conditions. Although photosynthesis declined in both plants when they were first subjected to cool temperatures, after two days, photosynthesis rebounded in the Miscanthus. The increase ...

Future for clean energy lies in 'big bang' of evolution

... decade understanding the fundamental reaction of photosynthesis that evolved in cyanobacteria 3.7 billion years ... has been rapid, boosting prospects of harnessing photosynthesis not just for energy but also for manufacturing ... is now universal agreement over the ability of photosynthesis to provide large amounts of clean energy in ...

Single-celled bacterium works 24-7

... (blue-green alga) known to cycle between photosynthesis during the day and nitrogen fixation at night. ... increases expression of genes governing photosynthesis and sugar production, as expected. At night, ... ones. Among the obvious cycling processes are photosynthesis and nitrogen fixation. It is difficult to perform ...

New twist on life's power source

... the most important biological process on Earth. photosynthesis by plants, algae, and some bacteria supports ... carbon dioxide. Grossmans team investigated photosynthesis in a marine Synechococcus, a form of ... of the ocean, since certain activities of normal photosynthesis require high levels of iron. While others had ...

Breakthrough in plant research

... in the regulation of carbon dioxide uptake for photosynthesis and water evaporation in plants. The discovery ... the leaves absorb carbon dioxide necessary for photosynthesis and release moisture into the air. The plasma ... plant, it also reduces carbon dioxide uptake for photosynthesis and thus could reduce the sequestering of the ...

Project focuses on production of hydrogen from bacteria and sunlight

... to harness the energy in sunlight using microbial photosynthesis to produce hydrogen. A second part of this ... metabolic engineering studies. Using its natural photosynthesis machinery, we are now starting to direct more of ... key component to hydrogen production through the photosynthesis process. However, they currently are very ...

Variable light illuminates the distribution of picophytoplankton

... numerically dominate marine phytoplankton. Their photosynthesis uses light to drive carbon dioxide uptake, ... Christophe Six adds, Phytoplankton need light for photosynthesis and survival, but surprisingly this light also ... Photoinactivation of photosystem II decreases photosynthesis and can even kill cells, unless they can ...

Researchers successfully simulate photosynthesis and design a better leaf

... sponsored by the National Science Foundation. photosynthesis converts light energy into chemical energy in ... and some species of bacteria and archaea. photosynthesis in plants involves an elaborate array of chemical ... enzymes and other chemical components. Most photosynthesis occurs in a plants leaves. The question we ...

'Chlamy' genome holds clues for renewable energy, the environment and human health

... green plants, Chlamy (a type of green alga) uses photosynthesis to convert solar energy and carbon dioxide into ... up Chlamys genome revealed hundreds that control photosynthesis and the function of flagella. The genome also ... the function of hundreds of genes involved in photosynthesis and the formation of flagella. Students in the ...

Study involving more than 100 scientists provides new insights on green algae

... Merchant said. "It has to swim, find food, do photosynthesis and respiration, and it mates. Chlamydomonas performs photosynthesis like plants, by converting carbon dioxide, water ... and sugars. Indeed, much of what is known about photosynthesis was learned from Chlamydomonas. "Now we have ...

DOE funds bio-inspired solar fuel center at Arizona State

... affairs. "Understanding and using the scientific principles underlying the photosynthesis process, will allow us to devise new and environmentally responsible ways ... to meet the world's energy demands. Plants and similar organisms use photosynthesis to oxidize water, producing oxygen and fuel compounds such as carbohydrate ...

Diet secrets of 'the Royals'

... into two groups with two types of photosynthesis. Plants with so-called C3 photosynthesis include trees and shrubs, which have a low ratio of carbon-13 to carbon-12. Plants with C4 photosynthesis include warm-season grasses, which have higher ratios of carbon-13 to ...

Genes from tiny algae shed light on big role managing carbon in world's oceans

... their biology and ecology. Algae were blazing the pathway of photosynthesis long before plants colonized landso the results bear significantly on ... authors of the paper. Embedded in the genetic code are clues about how photosynthesis transformed from a barren orb into the earth we know today. "The ...

Great Lake's sinkholes host exotic ecosystems

... by a bacterial film. In the oxygen-depleted water, cyanobacteria carry out photosynthesis using sulfur compounds rather than water and give off hydrogen sulfide, ... still and light fails, microorganisms use chemical means rather than photosynthesis to metabolize the sulfurous nutrients. Biddanda, Ruberg, and their team ...

High CO2 boosts plant respiration, potentially affecting climate and crops

... there is broad agreement that higher atmospheric CO 2 levels stimulate photosynthesis in C3 plants, such as soybean, no such consensus exists on how rising CO 2 ... the plants were able to use the increased supply of sugars from stimulated photosynthesis under high CO 2 conditions to produce energy, Leakey said. The rate of ...

Genome of a heat and drought resistant cereal plant analyzed

... and morphological specialization, such plants use a special kind of photosynthesis (in which first a molecule with four carbon atoms is formed, thus the ... of biomass for energy. Sorghum is the first cereal plant with C4 photosynthesis whose genome has been completely sequenced. The analysis of its functional ...

Eight ASU faculty elected as AAAS Fellows

... a biochemist, is cited by AAAS for "pioneering research in artificial photosynthesis including the design of artificial reaction centers, antenna and ... which is aimed at providing a deeper understanding of natural photosynthesis and the design, synthesis and assembly of bio-inspired constructs capable ...

UI researchers help to improve carbon measurements in global climate studies

... The paper tells how COS analysis may be used as a measurement-based photosynthesis tracer. "We've always looked at the total change in CO2, but now we can look for the influence of photosynthesis on this total change," remarked Campbell. "Our approach, based on the ...

Mysterious microbe plays important role in ocean ecology

... fact that nitrogen fixation in these abundant unicells is decoupled from photosynthesis is intriguing," said Taylor. "This unique adaptation brings up questions ... fixation, essential parts of the molecular machinery that carries out photosynthesis in plants and cyanobacteria. "That has multiple implications," Zehr ...

Diatom genome helps explain success in trapping excess carbon in oceans

... in the southern hemisphere is likely a major cause of oceanic deserts of photosynthesis there. Bowler's team has demonstrated that when iron deficiency occurs processes such as photosynthesis and nitrogen assimilation are suppressed. Other studies, which hail ...

Europe rallies behind nanotechnology to wean world from fossil fuels

... a stream of energy that in turn produces the key molecules of life. photosynthesis can potentially be harnessed either in genetically-engineered organisms, ... processes, to produce carbon-free fuels such as hydrogen. Alternatively, photosynthesis could be tweaked to produce fuels such as alcohol or even hydrocarbons ...

Photosynthesizing bacteria with a day-night cycle contain rare chromosome

... and part microbe-like. They use the sun's energy to make sugar via photosynthesis like plants do. And like bacteria, Cyanothece 51142 has other key ... generally found in more complex creatures such as plants and animals. photosynthesis and nitrogen fixation are incompatible, leading this microbe to separate ...

Cyanobacterium sequenced features rare linear chromosome

... the genome of a unique bacterium that manages two disparate operations photosynthesis and nitrogen fixation in one little cell during two distinct cycles ... circadian clock. By day, Cyanothece cells increase gene expression for photosynthesis and sugar production; at night, they moonlight, ramping up gene expression ...

SEX4, starch and phosphorylation

... Energy from the sun and carbon dioxide fuel photosynthesis in plants and algae, making life on earth possible. Carbon that is fixed ... that in leaves, their actions are finely tuned to the diurnal changes in photosynthesis and the circadian rhythms of the plant. Some of the new proteins that ...

TAU announces new 'supercenter' for renewable energy

... both heat and electricity from solar panels. Borrowing the power of photosynthesis from bacteria, Prof. Chanoch Carmeli is developing "artificial leaves," a ... cells to convert sunlight to electricity (based on the natural process of photosynthesis which occurs in leaves), at Tel Aviv University laboratories. Power ...

From Canada to the Caribbean: Tree leaves control their own temperature, Penn study reveals

... and leaves maintain a homeostatic temperature considered ideal for photosynthesis and suggests that plant physiology and ecology are important factors to ... a result of natural selection acting to maintain optimal temperature for photosynthesis in the face of widely varying ambient climates. The continental-scale ...

ASU researchers synthesize molecule with self-control

... of a chemical process. Functionally, this mimics one of the processes in photosynthesis that severely limits the energy conversion efficiency of higher plants, he ... these events at the molecular level one can imagine redesigning photosynthesis to improve energy conversion efficiency and thereby come closer to meeting ...

Early exposure to common weed killer impairs amphibian development

... Agency. Farmers use it to treat corn and soybeans. Atrazine blocks photosynthesis once it is absorbed by plants. Chronic exposure to the herbicide during ... second question is how is this happening?" she said. "We know it blocks photosynthesis in plants but why does it have such negative impact on amphibians?" ...

Viruses, oxygen and our green oceans

... for providing the genetic material that codes for key components of photosynthesis machinery. It is beginning to become to clear to us that at least a ... to our survival. Viruses may also help to spread useful genes for photosynthesis from one strain of bacteria to another. ...

Algae could one day be major hydrogen fuel source

... is a fundamental advantage in looking at the production of hydrogen by photosynthesis as a renewable fuel, senior chemist David Tiede said. Right now, ethanol ... take the part of the enzyme that creates the gas and introduce it into the photosynthesis process. The result would be a large amount of hydrogen gas, possibly ...

Biosensing nanodevice to revolutionize health screenings

... complex of proteins key to creating energy in all living things, including photosynthesis in plants. F1-ATPase breaks down adenosine triphosphate (ATP) to adenosine ... importance, notes Frasch, who is also with the Center for Bioenergy and photosynthesis in the College of Liberal Arts and Sciences. It also provides a new avenue ...

Researchers visualize complex pigment mixtures in living cells

... information about the inner workings of cells as they engage in the photosynthesis process of collecting sunlight and turning it into chemical energy. Such ... of labor between membranes inside the cell, with different processes in photosynthesis in different areas of the membranes. We found that the two photosystems ...

Gene that controls ozone resistance of plants could lead to drought-resistant crops

... breathing pores in leaves through which gases and water vapor flow during photosynthesis and respiration. Droughts, elevated ozone levels and other ... emissions would significantly reduce the ability of plants to increase photosynthesis and store the excess carbon in the atmosphere projected from rising levels ...
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