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10 April 2014 11:44 am ,
Vol. 344 ,
The Pyrenean ibex, an impressive mountain goat that lived in the central Pyrenees in Spain, went extinct in 2000. But a...
Tight budgets are forcing NASA to consider turning off one or more planetary science projects that have completed their...
Ebola is not a stranger to West Africa—an outbreak in the 1990s killed chimpanzees and sickened one researcher. But the...
In an as-yet-unpublished report, an international panel of geoscientists has concluded that a pair of deadly...
Tropical disease experts tried and failed before to eradicate yaws, a rare disfiguring disease of poor countries. Now,...
Since 2002, researchers have reported that agricultural communities in the hot and humid Pacific Coast of Central...
Balkan endemic kidney disease surfaced in the 1950s and for decades defied attempts to finger the cause. It occurred...
- 10 April 2014 11:44 am , Vol. 344 , #6180
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An Original Green Thumb
19 May 1997 (All day)
Yesterday would have been the 94th birthday of Frits Went, a Dutch-born American botanist who discovered the role of the plant hormone auxin and paved the way for the development of weed killers, fertilizers, and genetically engineered crops.
While studying oat seedlings, Went found that auxin produced at the tip was distributed preferentially down the dark side of the shoot, which explained why seedlings grow faster on that side and bend toward the light. In 1927, his theory of phototropism was not well accepted, but eventually it shaped the new field of agricultural chemistry.
Went also developed the first phytotron--a greenhouse that mimics natural climatic conditions--which was built in 1949 at the California Institute of Technology. And on a trip to Brazil in the late 1960s, Went discovered that Amazon forest soil was riddled with a network of fungi, which he proposed digest the tree litter and pass nutrients to intertwined tree roots. That theory was used to bolster the growing movement to save the rain forest from clear-cutting.
[Source: Emily McMurray, Ed., Notable Twentieth Century Scientists (Gale Research Inc., ITP, 1995).]