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Tag: "photosynthetic" at biology news

A new plant-bacterial symbiotic mechanism promising for crop applications

...The bacteria of this original model have their own photosynthetic pathway, a unique property in the rhizobia (2). This special character confers on it the exceptional, rare ability to form nodules on the stems of its host-plant. The plant thus acquires the possibility of fixing much higher quantities of nitrogen th...

Envisat captures first image of Sargassum from space

...n from chlorophyll a. Chlorophyll is the green photosynthetic compound in plants that captures energy from sunlight necessary for photosynthesis. The amount of chlorophyll present in vegetation plays an important role in determining how healthy it is. Accurately monitoring chlorophyll from space, therefore, pro...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

...ribute to a significant share of the world’s total photosynthetic activity. These "picophytoplankton" also exhibit g...chanisms that can account for species formation in photosynthetic phytoplankton, and this is just one of the major pieces to this long-standing puzzle for biologists....

Protein enables discovery of quantum effect in photosynthesis

...three clusters. The protein, which comes from a photosynthetic bacterium that lives in extremely high temperature...y acclaimed leader in spectroscopic studies of the photosynthetic process. In a paper entitled, "Evidence for wavelike energy transfer through quantum coherence in ph...

How trees manage water in arid environments

...plicit relationship between water availability and photosynthetic activities of the vegetation. This paper is the fi...iate correspondence between water availability and photosynthetic activity of the vegetation. This is different from what happens in most coniferous forests, where th...

Ocean's 'twilight zone' may be a key to understanding climate change

...ilizing the oceans with iron--to promote blooms of photosynthetic marine plants and transfer more carbon dioxide from the air to the deep ocean. "The twilight zone is a critical link between the surface and the deep ocean," said Ken Buesseler, a biogeochemist at Woods Hole Oceanographic Institution and lead auth...

Williams College biologist explores photosynthetic apparatus

...oring the structure, function and evolution of the photosynthetic apparatus in one of the most important marine prim...es to understand the effects of temperature on the photosynthetic capabilities of this ecologically important marine cyanobacterium. She hopes that the project wi...

Ocean sampling yields environmental sources of coral symbionts

...arge part to coral bleaching—loss of the symbiotic photosynthetic algae that live within corals and provide much of their energy. These symbiotic algae are essential to their host’s survival, but many corals must acquire their symbionts anew with the emergence of each generation. However, it has remained unclear ho...

Otherworldly bacteria discovered two miles down

...sms ultimately get their energy from the Sun, with photosynthetic plants forming the base of the food web. But in da...st in part on nutrients that can be traced back to photosynthetic plants or bacteria. The international team led by T. C. Onstott of Princeton University,* which a...

Bacteria that use radiated water as food

... In a way, Firmicutes serve the same function as photosynthetic organisms, such as plankton and trees at Earth's surface, that capture sunlight energy ultimately to the benefit of everything and everyone else. In the deep subsurface case, Firmicutes species are the producers, capturing the energy of radiation-bor...

With record resolution and sensitivity, tool images how life organizes in a cell membrane

...oteins, properties of autofluorescent proteins and photosynthetic reaction centers.'' Boxer's collaborators included chemistry postdoctoral fellow Mary Kraft of Stanford, who isotopically labeled the lipids used in the experiments, prepared the samples and performed all the measurements, Associate Professor of Che...

How did cactuses evolve?

...ants," write the authors. "A succulent, long-lived photosynthetic system allows cacti to survive periods of extreme drought while maintaining well-hydrated tissues." Recent molecular phylogenetic work has confirmed that Pereskia, a genus that consists of 17 species of leafy shrubs and trees, is where the earliest...

DOE JGI finishes 100th microbial genome

...xidation, carotenoid and chlorophyll biosynthesis, photosynthetic light harvesting, oxygen tolerance, and many other aspects of the physiology and metabolism of the green sulfur bacteria." The search for microorganisms that can inform solutions to energy and environmental challenges can go to the extremes--the boi...

DOE JGI sequences, releases genome of symbiotic tree fungus

...tions to thrive. Mycorrhizae significantly improve photosynthetic carbon assimilation by plants and are estimated to fix more phosphate and nitrogen than the entire worldwide chemical fertilizer industry produces. "The study and management of such relationships holds immense potential for the agriculture, forestr...

A more powerful and efficient engine for rice: the C3-C4 challenge

...nown as the engine of rice production, the plant's photosynthetic system. "If you think of the rice plant as a ca...Rice Research Institute (IRRI) on 17-21 July. "The photosynthetic process is the engine of growth for the rice plant, so, if we can improve that, then the whole plant...

Bacteria beat the heat

...ts and the other, an intense-heat lover. Both were photosynthetic (that is, using the sun's energy to create sugars ... was a reaction that takes place in enzymes in the photosynthetic "reaction center" of the bacterial cell. While gradually raising the surrounding temperature, the sc...

The diversity of marine life in the Gulf of Maine region is much greater than previously thought

...- in the Gulf of Maine region are plants (aquatic, photosynthetic organisms, ranging from single-celled forms to kelp, that are the base of the marine food chain). Most are tiny. One teaspoon of seawater can hold more than a million phytoplankton (tiny plants that float with currents). Phytoplankton also are the ...

Sun protection for plants

...temperatures. The resulting damage to the delicate photosynthetic membranes in the plant leads to impaired growth, cell destruction and, eventually, plant death. The scientists, funded by the Biotechnology and Biological Sciences Research Council (BBSRC), have found that plants are able to turn unwanted absorbed li...

Amazon rainforest greens up in the dry season

...growth. Plants are green because they contain the photosynthetic pigment chlorophyll. Growing plants generate more chlorophyll and therefore look greener. The greenness can also be translated to a measure of plant growth called "gross primary productivity." Ecosystems with higher gross primary productivity take u...

MIT: Oceans are a major gene swap-meet for plankton

... gene diversity and gene flow in the most abundant photosynthetic cell on the planet, the Prochlorococcus group of p...escribe Prochlorococcus in detail as "the smallest photosynthetic machine. It can convert the sun's energy into food through photosynthesis using only 1,700 genes, so...

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