The alteration in gene expression that occurs in plants subjected to water shortage has been documented extensively (Skriver and Mundy, 19901, and gene cloning and sequencing has shed some light on the molecular processes that may protect cells from the harmful effects of osmotic stress (Bray, 1991, 1993). Since plant hormones such as ABA and jasmonate are in some cases capable of causing expre...

Atriplex canescens (fourwing saltbush) is a C4 perennial fodder shrub with excellent resistance to salinity. However, the mechanisms underlying the salt tolerance in A. canescens are poorly understood. In this study, 5-weeks-old A. canescens seedlings were treated with various concentrations of external NaCl (0-400 mM). The results showed that the growth of A. canescens seedlings was significan...

Psammomys obesus, a desert rodent, develops diabetes when displaced from its natural environment and fed a high energy diet in the laboratory. This study was designed to examine variations in renal function in relation to the diabetic state with emphasis on changes in Na-K-ATPase activity. The following groups of Psammomys were studied: (1) Animals fed a saltbush diet; a low energy/high salt di...

This review presents a new model for multidisciplinary approach to development of modern forage cultivars enable high-value meat and wool production in the mixed farming zones Australia. Many pasture improvement activities focus on biomass production, filling novel agro-ecological niches, fixing nitrogen phenotypic markers. Key traits that drive profitability livestock, such as feeding value (F...

The late Pleistocene was a climatically dynamic period, with abrupt shifts between cool-wet and warm-dry conditions. Increased effective precipitation supported large pluvial lakes long-lived spring ecosystems in valleys basins throughout the western southwestern U.S. , but source seasonality of increased are debated. Increases proportions C 4 /(C + 3 ) grasses diets grazers have been ascribed ...

INTRODUCTION Forms of selenium found in soils influence its mobility, uptake, and metabolism by plants. The major forms in alkaline, oxidizing environments which are available for plant uptake are selenium-VI as selenate, Se0 4 2 -) and selenium-IV (as selenite, $e0,'). The major influences on uptake are soil pH and salinity. High salinit y and pH favor seienium anion adsorption onto clays and ...

Recent decades have seen a resurgent interest in traditional plant treatments for diabetes. This has pervaded nutrition, the pharmaceutical industry and academic research, fuelled by a growing public interest and awareness of so-called complementary and natural types of medicine. Before the advent of insulin therapy in 1922, starvation diets and traditional plant treatments were the cornerstone...