How do rootstocks control shoot water relations?

The effect of root pressurization on water relations, shoot growth, and leaf gas exchange of peach (Prunus persica) trees on rootstocks with differing growth potential and hydraulic conductance.

It is well known that rootstocks can have an effect on the vegetative growth and development of the tree; however, there has been no clear explanation about the physiological mechanism involved in this phenomenon. Evidence indicates that the rootstock effects on tree vegetative growth may be related to hydraulic limitations of the rootstock. The objective of these experiments was to investigate...

Do Leaves Control Episodic Shoot Growth in Woody Plants?

How do animal mitochondria tolerate water stress?

The vast majority of animal species do not tolerate severe water stress, but the encysted embryo of the brine shrimp Artemia franciscana is an exceptionally useful organism to investigate physiological mechanisms for enduring extreme environmental insults. Any substantial reduction in cellular water poses a threat to survival. Nevertheless anhydrobiotic animals survive virtually complete loss o...

How do membrane proteins sense water stress?

Maintenance of cell turgor is a prerequisite for almost any form of life as it provides a mechanical force for the expansion of the cell envelope. As changes in extracellular osmolality will have similar physicochemical effects on cells from all biological kingdoms, the responses to osmotic stress may be alike in all organisms. The primary response of bacteria to osmotic upshifts involves the a...

How Do Corporations Use Internet for Public Relations?

In today's dynamic environment characterised by higher advertising costs and lower efficiency of advertising, corporations are relying more and more on public relations (PR). We present new Internet technologies that can greatly improve corporations' relations such as RSS feeds, blogs and podcasts. We have also conducted a thorough analysis of 50 largest world corporations' web sites. We presen...