leaf hydraulic conductance, components of tissue water potential, hydraulic architecture parameters and xylem embolism were examined in greenhouse-grown two-year-old Aleppo pine (Pinus halepensis Mill.) seedlings from six origins representing the geographic range of the species in Italy. Cortical resin composition of the seedlings was also determined. Measurements were made on well-watered seed...

Survival of seeds in the seed bank is important for the population dynamics of many plant species, yet the environmental factors that control seed survival at a landscape level remain poorly understood. These factors may include soil moisture, vegetation cover, soil type, and soil pathogens. Because many soil fungi respond to moisture and host species, fungi may mediate environmental drivers of...

Masson pine is an important afforestation species in southern China, where seasonal drought common. The present study focused on the effects of Suillus placidus, ectomycorrhizal fungus, inoculation growth and physiological biochemical performance masson seedlings under four different watering treatments (well-watered, mild drought, moderate severe drought) to evaluate symbiotic relationship bet...

The soil moisture content can vary the behavior of biochemical activity and its incidence on herbicides. objective this manuscript was to assess, under controlled laboratory conditions, whether a prolonged 75-day drought affect 4-chloro-2-methylphenoxyacetic acid (MCPA) herbicide properties in three agricultural soils (Typic Xerofluvent, SA, Typic Haploxeralf, SB, Vertic Chromoxert, SC). During...

(1) Background: Root traits play important roles in acclimating to water and phosphorus (P) shortages. However, the relative importance of root size efficiency under these conditions is unknown. (2) Methods: This study investigated role water- P-limited environments. Three soybean genotypes with contrasting sizes were grown tall cylindrical pots compare grain yield, density, nutrient-uptake eff...

Trees are long-lived organisms that continuously adapt to their environments, a process in which epigenetic mechanisms likely play key role. Via downregulation of the chromatin remodeler DECREASED IN DNA METHYLATION 1 (DDM1) poplar (Populus tremula × Populus alba) RNAi lines, we examined how methylation coordinates genomic and physiological responses moderate water deficit. We compared growth d...

Riparian plants in arid areas are subject to frequent hydrological fluctuations induced through natural flow variation and water use by humans. Although many studies have focused on the success of Tamarix ramosissima Ledeb. in its invaded ranges, its major competitor in its home range, Populus euphratica Oliv., historically has dominated riparian forests where both species occur naturally. Thus...