Results 1 to 10 of about 11,369 (157)

Hydroxyacetophenone defenses in white spruce against spruce budworm [PDF]

open access: yesEvolutionary Applications, 2020
We review a recently discovered white spruce (Picea glauca) chemical defense against spruce budworm (Choristoneura fumiferana) involving hydroxyacetophenones.
Geneviève J. Parent   +7 more
doaj   +6 more sources

Association genetics of acetophenone defence against spruce budworm in mature white spruce [PDF]

open access: yesBMC Plant Biology, 2018
Background Outbreaks of spruce budworm (SBW, Choristoneura fumiferana Clem.) cause major recurrent damage in boreal conifers such as white spruce ( Picea glauca [Moench] Voss) and large losses of forest biomass in North America.
Mebarek Lamara   +5 more
doaj   +5 more sources

Defensive Traits during White Spruce (Picea glauca) Leaf Ontogeny [PDF]

open access: yesInsects, 2021
Changes during leaf ontogeny affect palatability to herbivores, such that many insects, including the eastern spruce budworm (Choristoneura fumiferana (Clem.)), are specialist feeders on growing conifer leaves and buds.
Antoine-Olivier Lirette, Emma Despland
doaj   +2 more sources

Xylem Anatomical Variability in White Spruce at Treeline Is Largely Driven by Spatial Clustering [PDF]

open access: yesFrontiers in Plant Science, 2020
The ecological function of boreal forests is challenged by drastically changing climate conditions. Although an increasing number of studies are investigating how climate change is influencing growth and distribution of boreal tree species, there is a ...
Timo Pampuch   +4 more
doaj   +2 more sources

In vivo function of Pgβglu-1 in the release of acetophenones in white spruce [PDF]

open access: yesPeerJ, 2017
Eastern spruce budworm (Choristoneura fumiferiana Clemens) (ESBW) is a major forest pest which feeds on young shoots of white spruce (Picea glauca) and can cause landscape level economic and ecological losses.
Melissa H. Mageroy   +6 more
doaj   +3 more sources

Effects of pH and Mineral Nutrition on Growth and Physiological Responses of Trembling Aspen (Populus tremuloides), Jack Pine (Pinus banksiana), and White Spruce (Picea glauca) Seedlings in Sand Culture [PDF]

open access: yesPlants, 2020
Responses of trembling aspen (Populus tremuloides), jack pine (Pinus banksiana), and white spruce (Picea glauca) seedlings to root zone pH ranging from 5 to 9 were studied in sand culture in the presence of two mineral nutrition levels. After eight weeks
Feng Xu   +2 more
doaj   +2 more sources

Functional responses of white spruce to snowshoe hare herbivory at the treeline. [PDF]

open access: yesPLoS ONE, 2018
Herbivores can modify the rate of shrub and treeline advance. Both direct and indirect effects of herbivory may simultaneously interact to affect the growth rates of plants at this ecotone.
Justin Olnes   +4 more
doaj   +2 more sources

Effects of Competition, Drought Stress and Photosynthetic Productivity on the Radial Growth of White Spruce in Western Canada [PDF]

open access: yesFrontiers in Plant Science, 2017
Understanding the complex interactions of competition, climate warming-induced drought stress, and photosynthetic productivity on the radial growth of trees is central to linking climate change impacts on tree growth, stand structure and in general ...
Syed A. Alam   +13 more
doaj   +2 more sources

Adaptive limitations of white spruce populations to drought imply vulnerability to climate change in its western range [PDF]

open access: yesEvolutionary Applications, 2019
A cost‐effective climate change adaptation strategy for the forestry sector is to move seed sources to more northern and higher elevation planting sites as part of ongoing reforestation programs.
Zihaohan Sang   +4 more
doaj   +2 more sources

Mycorrhizae and Rhizobacteria on Precambrian Rocky Gold Mine Tailings: I. Mine-Adapted Symbionts Promote White Spruce Health and Growth [PDF]

open access: yesFrontiers in Plant Science, 2018
White spruce [Picea glauca (Moench) Voss] is a commercially valuable boreal tree that has been known for its ability to colonize deglaciated rock tailings.
Martin B. Nadeau   +2 more
doaj   +2 more sources

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