Sentences with phrase «when photosynthetic»

«When we look at this critical assembly protein, CGL71, it's as if we are looking back in time to the era when photosynthetic apparatus had to gradually adjust to the changing atmospheric conditions of our planet,» Grossman said.

Not exact matches

That is, oxygen tends to fall out of the air as rust and other mineral oxides rather than linger as a gas, so when it exists in abundance, something — photosynthetic life, in Earth's case — must be constantly replenishing it.

For example, the leaves of Pereskia plants can store much more water, and they seem to use an alternative, water - conserving photosynthetic pathway typical of the leafless cacti when conditions are particularly dry.

One such effect, called bleaching, occurs when the symbiotic algae that are essential for providing nutrients to the coral either lose their identifying photosynthetic pigmentation and their ability to perform photosynthesis or disappear entirely from the coral's tissue.

«Wheat's photosynthetic pathway evolved 100 million years ago when atmospheric carbon dioxide levels were up to 10 times higher than they are today,» he said.

New work from a team including Carnegie's Mark Heinnickel, Wenqiang Yang, and Arthur Grossman identified a protein needed for assembling the photosynthetic apparatus that may help us understand the history of photosynthesis back in the early days of life on Earth, a time when oxygen was not abundant in the atmosphere.

But no one knows for sure whether the fungi can make use of the extra carbon supplied by plants when they raise their photosynthetic rate.

Golden speculates that this timepiece «tells photosynthetic cells when to get their biochemistry geared up for dawn, whether they're of generation one or generation four.»

«The work provides the first quantitative, physiological, and phylogenetic framework for understanding why, when, and how angiosperms evolved much higher photosynthetic rates than other plants.»

The authors infer — from the way modern photosynthetic organisms react to changing marine arsenic concentrations — that this event was due to widespread ocean toxicity resulting from the release of toxic elements into the oceans when the ice melted.

Ozone, which protects us from harmful ultraviolet radiation here on Earth, forms when oxygen produced by photosynthetic organisms (like trees and phytoplankton) synthesizes in light.

Their photosynthetic partners provide the worms with everything they need, so they can simply wriggle into the sand for cover when the tide comes in and avoid being swept away.

But these photosynthetic organisms activate other biochemical pathways at night, when they generate energy by breaking down the sugars, starches, and oils that they created during the day.

Even when studying agriculture in South Africa, he had been attracted by the science of crop protection, and his Ph.D. research on electron transport in photosynthesis was highly relevant to the industry: «Herbicides are specifically developed to work against the photosynthetic apparatus,» he explains.

These photosynthetic microorganisms grab CO2 from the atmosphere, and when death beckons, their carbon - rich bodies get buried in the depths.

The innovative aspect of this activity was the notion that the concept of macroscopic devices could be extended to the molecular level, and that it was possible to design supramolecular systems that, upon stimulation with external energy stimuli such as UV / Visible light, are capable of performing a variety of specific functions: (i) systems for information processing (e.g., wires, switches, antennas, plug / socket systems, extension cables, memories, logic gates, encoder / decoder, rudimentary neuron - like systems), (ii) devices that when powered by chemical energy or electrochemical energy or by light exhibit machine - like behavior (e.g., piston / cylinder systems, shuttles, lifts, rotary rings, dendritic photo - switchable boxes), and (iii) components for artificial photosynthetic systems.

Regardless of when the cyanobacteria appeared, it is widely accepted that they comprised the predominant form of life on early earth for some two billion years, and were responsible for the creation of earth's atmospheric oxygen, consuming CO2 and releasing O2 by photosynthetic metabolism.

Of particular importance is when microorganisms with advanced photosynthetic metabolism first appeared, since molecular phylogenetics suggests that all three domains would have already appeared and significant evolution must have already taken place (Schopf, 2000 and Olson 2006).

Researchers discover that photosynthetic bacteria could help improve heart functions when injected in beating hearts.

I'm laying down to recover health by bathing my photosynthetic skin in the sun when my evil twin leaps from a portal and starts firing a laser pistol at me.

Photo Op Everything changes, however, when you throw photosynthetic organisms into the mix.

The leaves were also meant to simulate Puerto Rico's bioluminescent bays, a natural phenomenon caused by dinoflagellates, photosynthetic underwater organisms that emit light when agitated.

When printed in a precise pattern onto carbon nanotubes on paper, these photosynthetic bacteria can produce electricity from sunlight, which could power biodegradable environmental and medical sensors.

However, it's natural for living organisms to trash the planet as they divide and consume — just look at all of the organisms that went extinct over 2 million years ago when selfish photosynthetic bacteria began spewing oxygen into the atmosphere and eradicating countless species of anaerobic bacteria.

Sea ice is critical for polar marine ecosystems in at least two important ways: (1) it provides a habitat for photosynthetic algae and nursery ground for invertebrates and fish during times when the water column does not support phytoplankton growth; and (2) as the ice melts, releasing organisms into the surface water [3], a shallow mixed layer forms which fosters large ice - edge blooms important to the overall productivity of polar seas.

Largely because of these mechanisms, most marine phytoplankton tested in single - species laboratory studies and field population experiments show little or no change in photosynthetic rates when grown under high pCO2 conditions equivalent to ∼ 760 μatm (Tortell et al. 1997, Hein & Sand - Jensen 1997, Burkhardt et al. 2001, Tortell & Morell 2002, Rost et al. 2003, Beardall & Raven 2004, Giordano et al. 2005, Martin & Tortell 2006).

When people do models about «sensitivity to carbon dioxide» do they model changes in total forest area / total photosynthetic surface area??

High irradiance can damage the corals» symbiotic algae when photosynthesis runs too rapidly, while low irradiance detrimentally reduces photosynthetic output.

«High CO2 grown plants had lower photosynthetic capacity than 350 mgrl l - 1 grown plants when measured at each CO2 concentration.

It's a basic issue — photosynthesis uses atmospheric CO2 as the basic building block, and when burned, photosynthetic fuels return the CO2 to the air.

The plant produces fluorescent light when sunlight excites the photosynthetic pigment chlorophyll.

When deciduous trees prepare for their seasonal cold dormancy they partially recycle important elemental components of chlorophyll and the associated photosynthetic machinery, such as nitrogen, phosphorous and magnesium.