How Maize Seeds and Seedlings Cope with Oxygen Deficit

Polyamines in Rice Seedlings under Oxygen-Deficit Stress.

Incubation of 3-d-old seedlings of Oryza sativa L. cv Arborio under anaerobic conditions, leads to a large increase in the titer of free putrescine while aerobic incubation causes a slight decrease. After 2 days, the putrescine level is about 2.5 times greater without oxygen than in air. The rice coleoptile also accumulates a large amount of bound putrescine and, to a lesser extent, spermidine ...

How Cells Cope with Obesity

Currently, more than 2.7 million American adults are diagnosed as obese each year. Many of these people suffer from a disorder known as metabolic syndrome, which includes symptoms like hypertension and elevated blood cholesterol. They are also at risk for developing additional diseases such as heart disease and diabetes mellitus. In fact, obesity may be a major cause of all these problems ... t...

How Animals Use and Cope with Gravity

Since the dawn of life on Earth some four billions of years ago, gravity has been a more or less stable environmental factor thus influencing the phylogenetic development of all living organisms. On the one side, gravity represents a factor of physical restriction, which compelled the ancestors of all extant living beings to develop basic achievements to counter the gravitational force (e.g., e...

Abscisic acid signaling in seeds and seedlings.

Design: How Can We Cope with Change?

"Some technologies are indeed making the world a riskier place . . . as innovations that can scupper the best laid business plans." The Economist, Jan 24, 2004 "Living Dangerously" p. 3 The gap between the exponential growth of technology, and the slow process of it's understanding and proper adaption to human and business benefit, is analyzed. Present day developments are compared with the rec...