Abstract This study was performed to determine the effects of densification process and glue type in wood material on dowel tensile performance. For this purpose, 8 mm 10 diameter dowels were obtained from black poplar ( Populus nigra ) Eastern spruce Picea orientalis L .), which densified at 50% 75% ratios. The bonded with PVAc D-VTKA separately after drilling 18 deep holes edge melamine-coate...

To help understand leaf hydraulic conductance (Kleaf) modulation under high irradiance, well-watered poplars (Populus trichocarpa Torr. & Gray ex Hook and Populus nigra L.) were studied diurnally at molecular and ecophysiological scales. Transcriptional and translational modulations of plasma membrane intrinsic protein (PIP) aquaporins were evaluated in leaf samples during diurnal time courses....

Poplars establish on alluvial bars within sand and gravel-bed rivers. Alluvial also provide particularly suitable habitats for the proliferation of ants. We hypothesized that ants, by modifying substrate structure resource availability in fluvial habitats, positively influence poplar growth during its establishment stage. conducted a preliminary nine-month ex situ greenhouse experiment with one...

Confocal Raman microscopy was used to illustrate changes of molecular composition in secondary plant cell wall tissues of poplar (Populus nigra x Populus deltoids) wood. Two-dimensional spectral maps were acquired and chemical images calculated by integrating the intensity of characteristic spectral bands. This enabled direct visualization of the spatial variation of the lignin content without ...

Mycorrhiza helper bacteria (MHB) are known to increase host root colonization by mycorrhizal fungi but the molecular mechanisms and potential tripartite interactions are poorly understood. Through an effort to study Populus microbiome, we isolated 21 Pseudomonas strains from native Populus deltoides roots. These bacterial isolates were characterized and screened for MHB effectiveness on the Pop...

The glutamine synthetase (GS1) is a key enzyme that catalyzes the reaction of glutamate and ammonia to produce glutamine in the nitrogen (N) metabolism. Previous studies on GS1s in several plant species suggest that overexpression of GS1s can enhance N utilization, accelerate plant vegetative growth, and change wood formation. In this study, we isolated a GS1 gene, termed PsnGS1.2, from Populus...

Heat release rate (HRR) is the principal fire characteristic of materials. There are three known methods for measurement HRR (based on oxygen consumption, mass loss rate, and combustion products temperature rise). The method based consumption considered to be reference. However, this expensive a large part laboratories universities unavailable. simplest products’ rise. has fundamental problem w...