BACKGROUND Both leaf attributes and stomatal traits are linked to water economy in land plants. However, it is unclear whether these two components are associated evolutionarily. METHODOLOGY/PRINCIPAL FINDINGS In characterizing the possible effect of phylogeny on leaf attributes and stomatal traits, we hypothesized that a correlated evolution exists between the two. Using a phylogenetic compa...

The gravitational component of water potential and frictional resistance during transpiration lead to substantial reductions in leaf water potential (Psi(l)) near the tops of tall trees, which can influence both leaf growth and physiology. We examined the relationships between morphological features and gas exchange in foliage collected near the tops of Douglas-fir (Pseudotsuga menziesii (Mirb....

BACKGROUND This study investigates the ability of quince leaf extract to prevent progression of atherosclerosis and to determine the lipid-lowering effect of it. OBJECTIVES This study suggested that quince leaf effects on progression of atherosclerosis, and performed comparison with atorvastatin as a standard medication. MATERIALS AND METHODS The effect of 50mg/kg of the quince leaf extract...

Leaf dry mass per area (LMA) is a composite parameter relating to a suite of structural traits that have the potential to influence photosynthesis. However, the extent to which each of these traits contributes to variation in LMA and photosynthetic rates is not well understood, especially at the high end of the LMA spectrum. In this study, the genus Banksia (Proteaceae) was chosen as a model gr...

“Comparison Analysis of Leaf Spring with Eye Thickness 18mm and 17mm Using Solid works, Performance ANSYS ˮ was the subject a study. The specific load Unladen were used to compare eye thicknesses 17 mm 18 mm. leaf springs in vehicles make passengers more comfortable by reducing vertical vibration caused unevenness road geometry. When spring loses its shape over time, life decreases, which can c...

Plant leaves are studied by the analysis of the magnitude and phase spectra of their thickness mechanical resonances. These resonances appear at ultrasonic frequencies and have been excited and sensed using air-coupled ultrasounds. In spite of the complex leaf microstructure, the effective medium approach can be applied to solve the inverse problem, at least in the vicinity of the first thickne...

The effects of a heavy metal containing wastewater sediment on two cultivars white willow were investigated in pot experiment. Our aim was to examine the effect toxic elements microanatomical parameters leaves tested plant. We examined following parameters: stomatic density, stoma width and length, lamina thickness, adaxial abaxial epidermis mesophyll palisad spongy parenchyma main vein length....

Leaf structure and water relations were studied in a temperate population of Avicennia marina subsp. australasica along a natural salinity gradient [28 to 49 parts per thousand (ppt)] and compared with two subspecies grown naturally in similar soil salinities to those of subsp. australasica but under different climates: subsp. eucalyptifolia (salinity 30 ppt, wet tropics) and subsp. marina (sal...

Leaf structure has been shown to be an important determinant of leaf photosynthetic characteristics, yet the nature of this relationship remains ambiguous. It has been suggested that intra-leaf shading of chloroplasts may explain the negative influence of increasing leaf thickness/density on mass-based photosynthesis. To explore further the importance of light-mediated functional limitations co...