Latest Christie Williams Stories
Wheat plants found to be resistant to Hessian fly larvae may be calling in reinforcements to build up rigid defenses. Christie Williams, a research scientist with the U.S. Department of Agriculture's Agricultural Research Service and a Purdue University associate professor of entomology, found that resistant plants under attack by Hessian fly larvae increased production of surface waxes and cutin, a molecule responsible for rigidity and integrity of epidermal cells. In plants susceptible to...
Resistant wheat plants stave off attacks by Hessian fly larvae by essentially destroying the fly's midgut and its ability to absorb nutrients, according to a study by Purdue University and the U.S. Department of Agriculture. Hessian fly larvae midguts "“ similar to human intestines "“ were observed in three different feeding situations. Larvae on susceptible plants had normal midgut function. Those that were given nothing to eat showed no damage to the midgut, though they starved....
- A Roman unit of weight, 1⁄1728 of a pound.
- A weight of four grains used in weighing gold and precious stones; a carat.
- In anatomy, a formation suggesting a husk or pod.
- The lowest unit in the Roman coinage, the twenty-fourth part of a solidus.
- A coin of base silver of the Gothic and Lombard kings of Italy.