Gizmorama
June 30, 2010
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Good Morning,
A gene extracted from yeast may have the ability to extend
the life of tomatoes. Check out the middle segment for more
details on this find and what it could do for the production
and sales of produce.
Until Next Time,
Erin
Questions? Comments? Email me at: mailto:gizmo@gophercentral.com
Email your comments=
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Study: Collecting is affecting coral reefs
VANCOUVER, Wash. - The United States must lead the way in
regulating trade to protect coral reefs and tropical fish
from a growing collectors market, a study says. Trade in
coral and coral reef fish is growing, taking 30 million fish
and 1.5 million live coral specimens from the world's oceans
every year, Washington State University researchers said in
a release Monday. The aquarium industry alone targets about
1,500 species of reef fishes, and some species have gone
"virtually extinct," a university study says. "Our actions
have a big impact on what happens in these coral reef eco-
systems, which are already hit hard by other forces like
global warming, ocean acidification and overfishing," said
study author Brian Tissot, a professor of Earth and Environ-
mental Sciences at WSU Vancouver. The study recommends laws
to protect a wider variety of species, better enforcement,
and reforms in source countries. With U.S. buyers accounting
for more than half the trade in live coral, reef fish and
invertebrates, the study says, the United States "should
assume its role as an international leader in coral reef
conservation and take steps to reform the international trade
it drives."
Scientists to heat terrain in climate test
WASHINGTON - U.S. scientists say they are planning a large-
scale ecosystem experiment in Alaska to test the effect of
global warming on arctic terrain. While research has been
conducted on the impact of climate change in temperate re-
gions of the world, little is known about the effect global
warming could have on arctic regions, the Department of
Energy's Oak Ridge National Laboratory said in a release
Friday. "The arctic regions are important to the topic of
global warming," Stan Wullschleger of the laboratory's En-
vironmental Sciences Division said, "because of the large
land area they occupy around the world and the layer of
permanently frozen soil, known as permafrost." The lab's
researchers are devising experiments that will purposely
warm an Alaskan test area to determine ecosystem response
to projected climate conditions, Wullschleger said. "The
way we design and arrange the above- and below-ground
heaters will allow us to warm the air and soil in a manner
representing future conditions and then study the conse-
quences of that warming," Wullschleger said. The project's
goal is to determine whether carbon stored in permafrost
will be released as the soil warms. This could have major
consequences for climate, scientists say.
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Gene could extend shelf life of produce
WEST LAFAYETTE, Ind. - A gene found in yeast could extend
the shelf life of tomatoes in supermarkets by about a week,
a U.S. researcher says. Avtar Handa, a Purdue University
professor of horticulture, says introducing the gene into
tomatoes slows aging and delays microbial decay, a univer-
sity release said Monday. The study, published in The Plant
Journal, determined the results would probably transfer to
most fruits. Fully ripe tomatoes from plants that had the
gene spermadine synthase introduced into them lasted about
eight days longer before showing signs of shriveling com-
pared with untreated plants, Handa said. "It increased the
quality of the fruit," Handa said. "If a tomato goes to
market, people won't buy it if it has started to shrivel.
If we can stop that wrinkling, we can extend the market time
of the fruit." The findings could have applications for
areas that don't often get fresh fruit, said Autar Mattoo,
a research plant physiologist with the U.S. Department of
Agriculture who collaborated in the study. "Shelf life is
a major problem for any produce in the world, especially in
countries such as in Southeast Asia and Africa that cannot
afford controlled-environment storage," Mattoo said.
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Global warming 'solution' could backfire
PALO ALTO, Calif. - A cloud-seeding scheme proposed to com-
bat global warming could change global rainfall patterns and
result in water shortages, researchers say. Whitening clouds
over the word's oceans to reflect more sunlight and reduce
global warming could in fact increase monsoonal rains over
oceans while causing the world's continents to become drier
on average, a Carnegie Institute study released Monday said.
Seeding could make clouds whiter by reducing the size of
water droplets making up the clouds, a researcher says.
"Rain clouds, which have big droplets, tend to be gray and
absorb sunlight, whereas clouds with smaller droplets tend
to be white and fluffy and reflect more sunlight to space,"
says study co-author Ken Caldeira of the Carnegie Institu-
tion's Department of Global Ecology. In computer simula-
tions, whiter clouds reflected more solar radiation and
offset the warming effect of the high carbon dioxide levels,
Caldeira said. But in the simulations, the reflective
oceanic clouds preferentially cooled the air over the
oceans relative to land, setting up a monsoonal air flow
which changed existing rainfall patterns, the study said.
"Our basic result calls into question previous assumptions
about the impact of this geoengineering scheme," Caldeira
said. "It merits further investigation."
Data: Water may have covered all of Mars
PARIS - Data from space probes orbiting Mars suggest condi-
tions that could have supported life may once have existed
everywhere on the planet, scientists say. The European Space
Agency's Mars Express and NASA's Mars Reconnaissance Orbiter
have detected signs that liquid water once flowed in both
southern and northern regions of the planet, an ESA release
said Friday. Until recently, data showed that only the
Southern Hemisphere exhibited signs of having once been
warmer and wetter that it is today, the agency said. But new
data from the orbiters show rock formations altered by water
exist in the Northern Hemisphere as well. The Mars Express
sensors first detected the mineral deposits, a finding con-
firmed by a higher-resolution sensor on the National Aero-
nautics and Space Administration orbiter. "We can now say
that the planet was altered on a global scale by liquid water
more than 4 billion years ago," John Carter of the University
of Paris said. The new findings may suggest sites for future
exploratory landers in the search for the evolution of prim-
itive life on the planet, the ESA said.
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