Background R2R3-MYB transcription factors are regulatory genes that have been linked to key aspects of plant development and secondary metabolism. They have been implicated in the transcriptional control of phenylpropanoid, and flavonoid metabolic pathways in model plant systems. However, in trees, knowledge is still limited about the role of R2R3-MYBs in such processes. Microarray transcript p...

Intoduction The bark beetle Ips typographus currently represents the primary pest of Norway spruce ( Picea abies ) in Central Europe. Early detection and timely salvage cutting beetle-infested trees are functional management strategies for controlling outbreaks. However, alternative methods being developed, possible indicators infestation can be assessed through changes physiological, biochemic...

Assessing directional bias in interspecific gene flow might be important in determining the evolutionary trajectory of closely related species pairs. Using a set of 300 single nucleotide polymorphisms (SNPs) having variable propensity to cross species boundary, we evaluated the genomic extent and direction of interspecific gene flow in a progenitor-derivative spruce species pair (black spruce a...

A dual-frequency approach is proposed to discriminate hemi-boreal forest species using L- and P-band data. First, it shown that L-band less sensitive the structure than P-band. Second, underlying ground topography estimated polarimetric sub-space decomposition at minimize any potential bias. Then, Gaussian backscatter model employed extract vertical The inverted profiles differ significantly ov...

The prolonged drought of recent years combined with the steadily increasing bark beetle infestation (Ips typographus) is causing enormous damage in Germany’s spruce forests. This preliminary study investigates whether early by (green attack) can be detected using indices based on airborne spatial high-resolution (0.3 m) hyperspectral data and field spectrometer measurements. In particular, a ne...

The spruce beetle, Dendroctonus rufipennis (Kirby), is an important mortality agent of native spruces throughout North America. The life-cycle duration of this species varies from 1 to 3 years depending temperature. The univoltine cycle (one generation per year) is thought to maximize outbreak risk and accelerate host mortality in established outbreaks. Prepupal diapause is associated with the ...