application of nanofertilizers is one of the promising methods for increasing resources use efficiency and reducing environmental pollutions. uncontrolled application of chemical fertilizer and pesticides has caused many problems to human health and domestic animals. nanofertilizers application could be a suitable way to reduce these problems. accordingly, in order to assess the silicon nanopar...

The occ urrence of water sources with high concentrations salts is a common problem in the semi-arid region ofnorth-eastern Brazil. search for management strategies that can minimize effect salt stress on crops therefore extremelyimportant. As such, this study aimed to evaluate gas exchange and production yellow passion fruit ‘BRS GA1’as function ofirrigation using brackish doses potassium. res...

Bacillus anthracis is a Gram-positive, spore-forming soil bacterium that is closely related to Bacillus cereus and Bacillus thuringiensis. Infections with Bacillus anthracis result in a disease called anthrax (Mock and Fouet 2001; Sylvestre et al. 2002). Anthrax is primarily an infection of grazing cattle. Ingested spores germinate within the host to the vegetative form. Vegetative cells multip...

The development of water stress resistant lines of commercial tomato by breeding or genetic engineering is possible, but will take considerable time before commercial varieties are available for production. However, grafting commercial tomato lines on drought resistant rootstock may produce drought tolerant commercial tomato lines much more rapidly. Due to changing climates and the need for com...

Abscisic acid (ABA) plays a key role in plant responses to abiotic stress, particularly drought stress. A wide number of ABA-hypersensitive mutants is known, however, only a few of them resist/avoid drought stress. In this work we have generated ABA-hypersensitive drought-avoidant mutants by simultaneous inactivation of two negative regulators of ABA signaling, i.e. the protein phosphatases typ...

Secondary succession plays a critical role in driving community structure in natural communities, yet how succession dynamics vary with environmental context is generally unknown. We examined the importance of seedling and vegetative recruitment in the secondary succession of coastal marsh vegetation across a landscape-scale environmental stress gradient. Replicate bare patches were initiated i...

Global temperature is expected to increase by 1.4 to 5.8 oC by the end of the 21st century due to increases in greenhouse gases concentrations (IPCC, 2007). High temperatures are considered to be a major environmental stress contributing to yield loss; however, night temperatures are anticipated to increase faster than day temperatures due to increased cloudiness that will result in decreased r...