Plant Life On Extrasolar Earthlike Planets Could Be Black Jun 21, 2007
Plants on Earth are green because of chlorophyll, which harnesses the energy of the sun to make sugars for metabolism ... " Blankenship is co-author of two papers recently published in the journal Astrobiology. The papers detail the kinds of clues that researchers are looking for and explore theories of what these other worlds might be like. Blankenship is part of a NASA working group based at the Jet Propulsion Laboratory called the Virtual Plant Laboratory. He and his colleagues are studying... (Science Daily)
Will nitrogen deficiency affect Midwest corn? Jun 13, 2007
"Our surveys show that nearly 84 percent of growers made changes to their nitrogen fertilizer programs based on this information." Crop images provided by remote sensing services, such as the OptiGro(tm) system from John Deere Agri Services, make it even easier to detect even subtle changes in chlorophyll levels within the crop canopy, which correlate directly to nitrogen availability to the plants. "By the time the telltale yellow leaves associated with severe nitrogen deficiency are noticed in... (Mt. Pleasant News, IA)
Algae bloom worries experts Jun 10, 2007
DNR's Fort McHenry station analyzes the harbor water for chlorophyll, salinity and dissolved oxygen ... About a week later, the Fort McHenry station showed a spike in the chlorophyll levels to about 170 micrograms per liter -- values at 100 mpl are considered to be a severe bloom ... A few days later, on May 27, the chlorophyll level skyrocketed again to 331 mpl, what Place calls "a very, very impressive chlorophyll value." A week of gluttony for the plants ensued, and officials began... (SunSpot.net)
Agri-Tech: JD OptiGro program straps digital cameras to Cessna landing gear Jun 7, 2007
They may use a chlorophyll or reflected light sensor if they want to find out if corn or wheat needs more nitrogen, for instance. Information is only needed from a few areas of the field at ground level. (Sioux Falls Tri-State Neighbor, SD)
UK boffins: extraterrestrial life will be discovered soon Jun 7, 2007
Reportedly, Dr Perryman said he would be unsurprised to hear that chlorophyll had been detected on another world within a few months. (Chlorophyll being the molecule in plants which permits free atmospheric oxygen to accumulate - and without which animal life on Earth could not exist. (Register)
Envisat Captures First Image Of Sargassum From Space Jun 7, 2007
The discovery was made using the MERIS maximum chlorophyll index (MCI) which provides an assessment of the amount of chlorophyll in vegetation to produce detailed images of chlorophyll per unit area. MERIS is uniquely suited for this because it provides images of above-atmosphere spectral radiance in 15 bands, including three bands at wavelengths of 665, 681 and 709 nanometres in order to measure the fluorescence emission from chlorophyll a. ... Chlorophyll is the green photosynthetic compound... (Science Daily)
Why are potatoes sometimes green? Are they OK to eat? May 31, 2007
When potatoes are exposed to light they can make chlorophyll, which turns them green. A bitter compound known as solanine, which can be toxic if eaten in quantity, forms during this process. (Boston Globe)
'Radiation-eating' Fungi Finding Could Trigger Recalculation Of Earth's Energy Balance And Help Feed Astronauts May 24, 2007
"Just as the pigment chlorophyll converts sunlight into chemical energy that allows green plants to live and grow, our research suggests that melanin can use a different portion of the electromagnetic spectrum--ionizing radiation--to benefit the fungi containing it," says Dr. Dadachova. The research began five years ago when Dr. Casadevall read on the Web that a robot sent into the still-highly-radioactive damaged reactor at Chernobyl had returned with samples of black, melanin-rich fungi that... (Science Daily)
Clovis West student's science skills win big May 24, 2007
The homemade plates cause the natural photosynthetic properties of chlorophyll -- which makes plants green -- to separate the hydrogen and oxygen in the seawater. The chlorophyll already is present in seawater, he said. (Fresno Bee -- Local)
Fungi Gobble Radiation to Grow, Study Says May 23, 2007
Lead researcher Ekaterina Dadachova said these observations suggest that the pigment may play a role similar to that of chlorophyll in plants, which traps energy from sunlight and converts it to "food energy" needed to sustain life. "We have associated the faster growth caused by radiation with melanin a phenomenon suggesting that the pigment is somehow involved in harvesting high-energy ionizing radiation and promoting growth, she said. Duke University fungi expert Rytas Vilgalys, who was not... (National Geographic)
Stanford takes the long view with alternative energy research May 22, 2007
When light hits a plant, it excites electrons in the chlorophyll molecules, turning that light energy into electrical energy. Just as that electrical energy is about to create carbon building blocks for a plant or tree -- or biomass -- the two scientists want to capture it with an electrode. (San Francisco Chronicle)
Forget superfoods, you can't beat an apple a day May 13, 2007
Claims: A blood cleanser and detoxifier attributed to both the 'natural plant enzymes' and the chlorophyll content of the freshly-juiced grass, claimed to 'detoxify the body ... Chlorophyll is not absorbed into the body (or else we would all look an attractive shade of green), and its supposed high levels are no higher than other green vegetables. (Guardian Unlimited -- UK)
Pale spears, pure pleasure May 10, 2007
This prevents any contact with sunlight, which would trigger the process of photosynthesis, and thus stimulate the production of chlorophyll, the pigment that lends plant matter its characteristic green colour. Some farmers are so obsessive about this that they spend their nights in the asparagus fields with flashlights, covering plants even as they break through the soil. (Globe and Mail)
Scientists Offer New View Of Photosynthesis May 5, 2007
The researchers focused their efforts by studying the center stage of photosynthesis, the reaction center, where light energy is funneled into specialized chlorophyll binding proteins. The textbook picture of photosynthesis represents the reaction center proteins as a scaffold, holding chlorophyll molecules at a highly optimized distance and orientation so that electrons can hop from one chlorophyll to another ... With the chlorophylls in just the right position, any systematic protein movement... (Science Daily)
Yurok's innovative river watch Apr 29, 2007
This summer, the tribe will add chlorophyll probes to check the amount of algae in the water and monitor the toxic blooms that form late in the season. In the past, the tribe has posted warnings after sampling the water and waiting for lab tests results, leading to two-week-old alerts. (Daily Triplicate)
Satellites Play Vital Role In Understanding The Carbon Cycle Apr 27, 2007
While individually microscopic, phytoplankton chlorophyll collectively tints the surrounding ocean waters, providing a means of detecting these tiny organisms from space with dedicated ocean colour sensors, such as MERIS.. Dr Michael Buchwitz from the Institute of Environmental Physics (IUP) at the University of Bremen in Germany presented global carbon dioxide measurements based on observations from Envisat s SCIAMACHY instrument from 2003 to 2005. (Science Daily)
New 'super-Earth' found in space Apr 25, 2007
The observatories would seek to identify trace atmospheric gases such as methane, and even markers for chlorophyll, the pigment in Earth plants that plays a critical role in photosynthesis. Indirect' detection. (BBC News -- Science)
Seagrasses On Rebound Apr 24, 2007
" Seagrasses started regrowing after state legislation in the late 1980s forced sewer plant upgrades in West Central Florida. Since then the estuary program and local governments across the Bay have signed an interlocal agreement to reduce nitrogen pollution into the Bay. Cities and counties have begun cleaning stormwater outflows, and the water management district and other agencies are restoring shoreline to provide natural filtration of runoff. "Certainly 2006 was a good year," Greening said.... (Tampa Bay Online, FL -- News)
Jet Lite faces second-airline challenge Apr 19, 2007
The notion of a consistent price point has been vitiated by all airlines, says Chlorophyll Brand & Communications co-founder Anand Halve. Kingfisher Airlines experienced this and has long abandoned its stance as a value-carrier. (India Times)
When It Comes to Photosynthesis, Plants Perform Quantum Computation Apr 17, 2007
QUANTUM CHLOROPHYLL: Sunlight triggers wave-like motion in green chlorophyll, embedded in a protein structure, depicted in gray here, that guides its function. Employing this process allows the near-perfect efficiency of plants in harvesting energy from sunlight and is likely to be used by all of them, Engel says. (Scientific American)
Local Color: Plants under Alien Suns Could Come in a Variety of Hues Apr 15, 2007
"The photon flux spectrum peaks in the red, which is where chlorophyll has peak absorption.". In fact, the photosynthetic organisms of Earth are exquisitely tuned to take full advantage of the specific sunlight that filters down to the surface (and below the sea). (Scientific American)
Extra-Terrestrial trees may be red Apr 13, 2007
Although Earth receives sunlight divided into the seven colours of the spectrum, with blue and red being the dominant colours, plants absorb them, while the chlorophyll in the plants reflects the green, giving plants the colour we see. But NASAs astrobiologists say that not all stars have similar light distribution as our Sun, and hence photosynthesis may look totally different. (Daily News & Analysis)
Chozu Bath and Tea Gardens Apr 13, 2007
The burdock sauteed with shoyu soy sauce deepened the plate's savory sphere while the beautifully rolled seasonal greens kale and bok choy, in this case provided a crunchy, juicy injection of chlorophyll that my co-worker termed "as good as a wheat grass shot.". Sips of miso soup accented each bite. (Mail Tribune, OR)
Plants on other planets may be yellow, red: Nasa Apr 13, 2007
Chlorophyll in plants takes light from the sun and converts it into energy through a process called photosynthesis. Scientists have long known that most plants on Earth absorb more blue and red light and less green light, but they have not understood why. (India Times, India -- Health/Science)
Alien plants 'more colourful than Earth's flora' Apr 12, 2007
Scientists have long known that the chlorophyll in most plants on Earth absorbs blue and red light and less green light, appearing green. Gases in the Earth s air also filter sunlight, absorbing different colours. (Telegraph.co.uk)
NASA Predicts Nongreen Plants On Other Planets Apr 12, 2007
Scientists have long known that the chlorophyll in most plants on Earth absorbs blue and red light and less green light. Therefore, chlorophyll appears green. (Science Daily)
Plants on other planets might not be green Apr 12, 2007
Why plants are greenThis could explain why chlorophyll absorbs mostly red and blue light and reflects green light, the researchers say ... One idea, called the , states that chlorophyll doesnt absorb green light because it appeared after another pigment, called retinal, was already present and it had to settle for the leftover wavelengths that were not being absorbed ... The researchers reached their conclusions after analyzing 12 different kinds of light-sensitive pigments, including... (MSNBC -- Technology)
'Plants' on alien planets could be purple or yellow, say NASA scientists Apr 12, 2007
The distribution of energy carried by different wavelengths and the abundance of photons in different parts of the spectrum means that by using green chlorophyll, plants are maximising their ability to bring in energy, they say. They then went on to predict which wavelengths would be best used on planets around alien stars. (Guardian Unlimited -- Life)
Was early Earth purple? Apr 11, 2007
Microbes may have used retinal, not chlorophyll, to harness sun's rays ... Ancient microbes might have used a molecule other than chlorophyll to harness the Suns rays, one that gave the organisms a violet hue ... Chlorophyll, the main photosynthetic pigment of plants, absorbs wavelengths from the sun and reflects green ones, and it is this reflected light that gives plants their leafy color. (MSNBC -- Technology)
Taking Nature's Cue For Cheaper Solar Power Apr 6, 2007
The green dye Dr Campbell (pictured) is synthetic chlorophyll derived from the light-harvesting pigment plants use for photosynthesis. Other dyes being tested in the cells are based on haemoglobin, the compound that give blood its colour. (Science Daily)
Grüner Veltliner: In step with spring Apr 4, 2007
It may not be an exact match, but that immediacy, that pungent, bright-spring chlorophyll smackdown of green, gets at Gr. ner's elusive bouquet. (Los Angeles Times)
DRI expert offers new theory on climate Apr 2, 2007
Scientists have attributed relatively high surface water chlorophyll near James Ross Island in Antarctica to Patagonian dust composition, according to the report. McConnell said it is unknown how much the atmospheric dust has contributed to warming on the Antarctic Peninsula. (Las Vegas Review-Journal -- Nevada News)
How I fell for the Cotswolds Apr 1, 2007
The tiny cluster of surrounding houses looks equally mellow and natural in green, green radiant fields where sheep look as if they are posing for 'Mary Had a Little Lamb,' and the word chlorophyll comes to mind. Our schoolhouse seems especially welcoming-three sofas to sink into, long windows where pink mallow branches sway, a table to seat twelve, if we knew so many to invite, and a fireplace. (Guardian Unlimited -- Travel)
Looking forward to upcoming year Mar 30, 2007
Volunteers from the CLLA obtained secchi disk readings for water clarity, temperature, and tested for chlorophyll a. All of the information collected was also given to the Minnesota Pollution Control Agency (MPCA) for inclusion in lake quality data, which can be accessed for each lake on the MPCA websites www. pca. (Lindstrom Chisago County Press, MN)
All roads lead to GUN1 Mar 30, 2007
"Such an arrangement requires a tightly coordinated communication between organelles and the nucleus but not much is known about the signaling pathways between chloroplasts and the nucleus says the study's lead author, Joanne Chory, Ph.D., professor and director of the Plant Biology Laboratory and investigator with the Howard Hughes Medical Institute. The basis of the study may provide insight into other areas of biological research. The importance of an unhindered flow of information to and... (EurekAlert!)
New developments in 'artificial photosynthesis' Mar 28, 2007
In the beginning stages of photosynthesis, the absorption of light by chlorophyll a molecule responsible for the green color in plants drives the complex photosynthetic reaction. The energy of sunlight is transferred in the form of electrons and positive charges throughout a pathway of various steps before the final products carbohydrates (the plants food) and oxygen are produced. (EurekAlert!)
Sheep Sorrel in Essiac Formula Mar 20, 2007
The chlorophyll carries oxygen throughout the bloodstream. Cancer cells do not live in the presence of oxygen. (Suite101.com)
Lakewatch volunteers keep eye on waters Mar 19, 2007
Water samples are frozen for later analysis for chlorophyll, e. coli and phosphorus, which are indicators of lake health and productivity. At each of the monitoring stations, marked with white buoys, we take readings to check for visibility and water depth. (Orlando Sentinel -- News)
Lichens and Mosses Mar 17, 2007
The alga, which contains chlorophyll, manufactures food in the presence of water and sunlight. The fungus absorbs food from the alga, provides structure, and contains acids that break down rock and wood, providing minerals to nourish the lichen and leaving behind microscopic fragments of matter that, over centuries, accumulate to form dirt. (Suite101.com)
Find Home Remedies For Common Problems Mar 1, 2007
"It's often served on your plate as a garnish, but just eat it. It has chlorophyll and it's healthy too.". With a booming pharmaceutical industry, many believe home remedies have long been forgotten. (Click2Houston, TX)
A menace to science Feb 12, 2007
She talks endlessly about chlorophyll, for example: how it's "high in oxygen" and will "oxygenate your blood" - but chlorophyll will only make oxygen in the presence of light ... She even does this in the book Miracle Superfood, which, we are told, is the published form of her PhD. "In laboratory experiments with anaemic animals, red-blood cell counts have returned to normal within four or five days when chlorophyll was given," she says ... "In the heart," she explains, "chlorophyll aids in the... (Guardian Unlimited)
DNA Gets New Twist: Scientists Develop Ultra-bright Fluorescent 'DNA Nanotags' Jan 29, 2007
Found in certain types of algae, such as the red and blue algae in fresh and marine waters, these proteins contain multiple, fluorescent pigments that work together to absorb light energy that is then transferred to chlorophyll, where it is used for photosynthesis. The Carnegie Mellon team has mimicked this efficient light-harvesting process in the design of their DNA nanotags to create incredibly bright, fluorescent labels. (Science Daily)
New Group Of Algae Discovered: Picobiliphytes Jan 16, 2007
An international group of researchers has succeeded in identifying a previously unknown group of algae. Within these discoveries also lie the treatment technologies comprising ACT that are. (Science Daily)
Marine Bacteria Can Create Environmentally Friendly Energy Source Jan 16, 2007
These microscopic algae carry out the same process as green plants on land, namely, photosynthesis with the help of chlorophyll ... -- Chlorophyll is a green photosynthetic pigment found in plants, algae, and cyanobacteria ... Chlorophyll absorbs mostly in the blue and to a lesser extent red portions of the electromagnetic spectrum. (Science Daily)
Bringing Together The Study Of The Earth And Sky Jan 13, 2007
Chlorophyll, whether in terrestrial plants or in floating algae in lakes, has a distinct spectral signature that can be measured by satellite. This image, produced by researchers at the Environmental Remote Sensing Center (ERSC) at the University of Wisconsin-Madison using a multi-date composite of several Landsat scenes, shows algal blooms on lakes Mendota (top) and Monona (bottom right) in Madison, Wisconsin, October 31, 1999. (Science Daily)
Infotainment Jan 11, 2007
The green stuff on the occasional freak potato chip is chlorophyll. There are 333 toilet paper squares on a toilet paper roll. (Daily Times, Pakistan)
Micronutrients in Desert Soils Jan 7, 2007
Iron (Fe) is involved with the production of chlorophyll. Plants grown in alkaline soil (so prevalent in desert soils) can develop iron deficiencies, especially if they are sensitive. (Suite101.com)
Climate Experts Search For Answers In The Oceans Jan 2, 2007
While individually microscopic, phytoplankton chlorophyll collectively tints the surrounding ocean waters, providing a means of detecting these tiny organisms from space with dedicated ocean colour sensors. "Because phytoplankton are a major influence on the amount of carbon in the atmosphere and are sensitive to environmental changes, it is important to monitor and model them into calculations of future climate change," Prof. (Science Daily)