Research shows kestrels enjoy life far from the madding crowd
Finding the missing genes in hormone-biosynthesis pathway hints at subtle control of growth in rice
The plant hormones known as gibberellins (GAs) are growth promoters that are involved in a wide range of processes from seed germination to flower development. The details of the biosynthesis of GAs, however, ...
May 02, 2013
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Researchers find without microtubule guidance, cellulose causes changes in organ patterns during growth
(Phys.org) —Mathematics is everywhere in nature, and this is illustrated by the spiral patterns in plants such as pine cones, sunflowers or the arrangement of leaves around a stem. Most plants produce a ...
Apr 26, 2013
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British panda given helping hand in quest for cub
Experts at Edinburgh Zoo in Scotland have artificially inseminated Britain's only female giant panda Tian Tian after she failed to mate with her male partner, Yang Guang, the zoo announced on Sunday.
Apr 21, 2013
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When it comes to survival of the fittest, stress is a good thing
When the woods get crowded, female squirrels improve their offspring's odds of survival by ramping up how fast their offspring grow.
Apr 18, 2013
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Reproductive tract secretions elicit ovulation
Eggs take a long time to produce in the ovary, and thus are one of a body's precious resources. It has been theorized that the body has mechanisms to help the ovary ensure that ovulated eggs enter the reproductive tract at ...
Apr 17, 2013
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How a little plant became a model for pioneering research
In recent decades, research into a diminutive plant, Arabidopsis thalania, which goes through daily life as a common weed, has generated a tremendous amount of knowledge. Much of the research on Arabidopsis, ...
Apr 09, 2013
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Power struggles are best kept out of the public eye
For animals, prevailing in a fight affects their likelihood of winning future conflicts. The opposite is true of losing a fight. The sex hormone testosterone is often believed to mediate this "winner effect". ...
Apr 05, 2013
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Monkey study reveals why middle managers suffer the most stress
(Phys.org) —A study by the universities of Manchester and Liverpool observing monkeys has found that those in the middle hierarchy suffer the most social stress. Their work suggests that the source of this ...
Apr 02, 2013
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National Zoo's giant panda Mei Xiang is artificially inseminated
They closely monitored her hormone levels, watched her behavior to make sure the time was right and set up a quiet night with a mate.
Mar 31, 2013
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Britain's giant pandas get in the mood
He is performing handstands and eating constantly, and she is spraying her home with alluring scents—all the signs point to mating season for Britain's giant pandas.
Mar 13, 2013
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Researchers discover mechanism that regulates steroid hormone production in Drosophila
Looking at the transformation of a fly larva into a pupa may help researchers to understand the molecular mechanisms that trigger puberty. A study conducted on the fruit fly, Drosophila melanogaster, by sci ...
Mar 07, 2013
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Stressed-out tadpoles grow larger tails to escape predators
When people or animals are thrust into threatening situations such as combat or attack by a predator, stress hormones are released to help prepare the organism to defend itself or to rapidly escape from danger—the ...
Mar 05, 2013
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Metal ions regulate terpenoid metabolism in insects
Max Planck scientists in Jena, Germany, have discovered an unusual regulation of enzymes that catalyze chain elongation in an important secondary metabolism, the terpenoid pathway. In the horseradish leaf ...
Feb 28, 2013
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Horses don't have stage fright—but their riders do
(Phys.org)—It is well known that horses show symptoms of stress when ridden but relatively little attention has been paid to the effects on their riders. This is surprising, as equestrian sports rely on ...
Feb 19, 2013
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