Quantcast

Latest Chlorophyll Stories

f7846231abcd564969043aa7ac185889
2011-06-07 09:53:15

Scientists from NASA's Goddard Space Flight Center in Greenbelt, Md., have produced groundbreaking global maps of land plant fluorescence, a difficult-to-detect reddish glow that leaves emit as a byproduct of photosynthesis. While researchers have previously mapped how ocean-dwelling phytoplankton fluoresce, the new maps are the first to focus on land vegetation and to cover the entire globe. To date, most satellite-derived information related to the health of vegetation has come from...

2010-12-07 13:52:16

Planting soybean [(Glycine max (L.) Merr.] into Fe chlorosis-prone soils where soybean has seldom, if ever, been grown may require special precautions to establish effective Bradyrhizonium japonicum populations, while simultaneously providing adequate levels of N for the current crop. However, adding fertilizer N likely will increase rhizosphere pH and [ OH̢蠫 ] and, thus, promote Fe deficiency. Our objective was to determine whether varieties (Vs) that differed...

9bd496e5e09a8c3ad3126d492e32819c1
2010-08-15 09:51:23

A change in the color of ocean waters could have a drastic effect on the prevalence of hurricanes, new research indicates. In a simulation of such a change in one region of the North Pacific, the study finds that hurricane formation decreases by 70 percent. That would be a big drop for a region that accounts for more than half the world's reported hurricane-force winds. It turns out that the formation of typhoons "” as hurricanes are known in the region "” is heavily mediated by...

01d3d79f2ee8a51143398880334b84721
2010-06-25 08:11:42

For a plant, light is life. It drives everything from photosynthesis to growth and reproduction. Yet the chain of molecular events that enables light signals to control gene activity and ultimately a plant's architecture had remained in the dark. Now a team of researchers from the Salk Institute for Biological Studies and Duke University have identified the courier that gives the signal to revamp the plant's gene expression pattern after photoreceptors have been activated by light. "Light is...

2010-05-14 09:00:00

TORRANCE, Calif., May 14 /PRNewswire/ -- Summer action movies may call for suspension of disbelief from audiences, but one superhero's penchant for a chlorophyll-rich drink to detoxify his body has real benefits, according to one medical expert. (Photo: http://www.newscom.com/cgi-bin/prnh/20100514/LA04961) "Chlorophyll has been shown to help reduce contaminants found in everyday life and that build up in the body over time," explains Mark Drucker, M.D. and co-founder of the Center for...

2010-01-27 10:49:10

As so-called primary producers, plants use solar energy to synthesize the foodstuffs that sustain other forms of life. This process of photosynthesis works in much the same way as the solar panels that supply energy for domestic heating. Like these, plant leaves must cope with variations in the level and quality of ambient light. LMU researcher Professor Dario Leister and his colleagues at LMU Munich have been studying how this is accomplished in the thale cress, Arabidopsis thaliana. "It...

4fa3800d7289d9aaf5c4d1368f49eeaf1
2009-09-10 05:33:16

Holds promise for studying how organisms cleanse themselves of dying cells Nicholas Turro of Columbia University, Bernhard Krautler of the University of Innsbruck, Austria and their colleagues have found that, as chlorophyll ages and begins to disintegrate in banana peels it does not change color in the spectrum of visible light we see. Instead, it glows blue when observed under ultraviolet light. While the light show adds a level of exoticism to the fruit in our eyes, and serves to attract a...

2009-08-13 12:40:00

Walking outdoors in the fall, the splendidly colorful leaves adorning the trees are a delight to the eye. In Europe these autumn leaves are mostly yellow, while the United States and East Asia boast lustrous red foliage. But why is it that there are such differences in autumnal hues around the world? A new theory provided by Prof. Simcha Lev-Yadun of the Department of Science Education- Biology at the University of Haifa-Oranim and Prof. Jarmo Holopainen of the University of Kuopio in Finland...

2009-06-29 16:44:59

Structure of artificial light harvesting antenna determinedAn international team of researchers has modified chlorophyll from an alga so that it resembles the extremely efficient light antennae of bacteria. The team was then able to determine the structure of these light antennae. This is the first step to converting sunlight into energy using an artificial leaf. The researchers will be publishing an article on their research findings in the online Early Edition of the PNAS journal in the...

10dd8440002adf7a2e1db356cb56078b1
2009-05-28 12:40:00

A unique signal detected by NASA's Aqua satellite is helping researchers check the health and productivity of ocean plants around the world. Fluorescent red light emitted by ocean phytoplankton and detected by Aqua reveals how efficiently the microscopic plants are turning sunlight and nutrients into food through photosynthesis. "This is the first direct measurement of the health of the phytoplankton in the ocean," says Michael Behrenfeld, a biologist at Oregon State University who...


Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.