drought preconditioning (dp) is a method of irrigation with low frequency and longer duration, to extend the root system and suppress drought damage in plants. in the present study, the effect of dp for 30 days on increasing tolerance to drought stress in two turfgrass species, creeping bentgrass (agrostis stolonifera cv.palustris) and tall fescue (festuca arundinacea cv. greystone) was investi...

T crop species have been adopted by a growing number of countries in the past decade, and the acreage devoted to transgenic species has expanded considerably (James 2005). In the United States alone, the National Agricultural Statistics Service of the US Department of Agriculture (USDA) reported that corn acreage planted with transgenic hybrids expanded from 26 percent of the crop in 2001 to 52...

Pyura stolonifera is a large solitary ascidian found in Africa, Australasia and South America. The taxonomic status of different populations of this species is disputed, especially since there is evidence for several distinct morphological and genetic units that point towards the existence of multiple cryptic species. While some researchers still recognize P. stolonifera as a single species, ot...

Heat stress is a primary factor causing summer bentgrass decline. Changes in gene expression at the transcriptional and/or translational level are thought to be a fundamental mechanism in plant response to environmental stresses. Heat stress redirects protein synthesis in higher plants and results in stress protein synthesis, particularly heat shock proteins (HSPs). The goal of this work was to...

Water stress reduces endogenous cytokinin (CK) content and may inhibit CK production. Maintenance of endogenous CK levels by genetic transformation with ipt in leaves and roots undergoing senescence may promote stress tolerance. This study was designed to determine the physiological effects of ipt expression on immature and mature leaves and in roots for plants exposed to different levels of wa...

Creeping bentgrass ( Agrostis stolonifera L.) is a turfgrass species that widely used on golf courses throughout the United States. In field settings, plants are often subjected to more than one stress at time, and studying stresses independently likely insufficient. Stresses, such as heat salt stress, can affect plant hormone levels and, in turn, how well tolerates stress. The objectives of ex...