scholarly journals Location, but not defensive genotype, determines ectomycorrhizal community composition in Scots pine ( Pinus sylvestris L.) seedlings

2021 ◽  
Author(s):  
Jim Downie ◽  
Andy F. S. Taylor ◽  
Glenn Iason ◽  
Ben Moore ◽  
Jonathan Silvertown ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Community Composition ◽  
Scots Pine ◽  
Ectomycorrhizal Community

scholarly journals Effect of Prunus serotina Ehrh. Volatile Compounds on Germination and Seedling Growth of Pinus sylvestris L.

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 846
Author(s):  
Aleksandra Halarewicz ◽  
Antoni Szumny ◽  
Paulina Bączek
Keyword(s):  
Pinus Sylvestris ◽  
Volatile Compounds ◽  
Scots Pine ◽  
Prunus Serotina ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Fraction ◽  
Black Cherry ◽  
Allelopathic Potential ◽  
Pine Seedlings ◽  
Phytotoxic Effect

In temperate European forests invaded by Prunus serotina Ehrh. (black cherry), a reduction in the spontaneous regeneration capacity of Pinus sylvestris L. (Scots pine) is observed. It could be caused by various factors, including allelopathic properties of this invasive plant. In this study the phytotoxic effect of P. serotina volatile compounds on P. sylvestris and the seasonal variation in this effect were assessed. Simple assays showed that volatiles emitted from P. serotina leaves significantly inhibited root growth of P. sylvestris seedlings. Their negative effect on stem growth was much weaker. The strongest phytotoxic effect on Scots pine seedlings was caused by the volatiles emitted from the youngest black cherry leaves. In fresh foliage of P. serotina, nineteen volatile organic compounds were identified by gas chromatography–mass spectrometry (GC–MS). The dominant compound was benzaldehyde. On the basis of tests of linalool alone, it was found that this monoterpene present in the volatile fraction has a strong allelopathic potential and inhibits germination, root elongation and shoot elongation of pine seedlings. The results of our research suggest that volatile compounds from P. serotina leaves could limited survival of P. sylvestris individuals in the seedling phase.

scholarly journals Radiocarbon Calibration around AD 1900 from Scots Pine (Pinus Sylvestris) tree rings from Northern Norway

Radiocarbon ◽  
2019 ◽  
Vol 61 (6) ◽  
pp. 1775-1784
Author(s):  
Helene Svarva ◽  
Pieter Grootes ◽  
Martin Seiler ◽  
Terje Thun ◽  
Einar Værnes ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Pacific Northwest ◽  
Scots Pine ◽  
Tree Rings ◽  
Fossil Fuels ◽  
Pacific Coast ◽  
Northern Norway ◽  
Pine Tree ◽  
The Pacific ◽  
The Us

ABSTRACTTo resolve an inconsistency around AD 1895 between radiocarbon (14C) measurements on oak from the British Isles and Douglas fir and Sitka spruce from the Pacific Northwest, USA, we measured the 14C content in single-year tree rings from a Scots pine tree (Pinus sylvestris L.), which grew in a remote location in Saltdal, northern Norway. The dataset covers the period AD 1864–1937 and its results are in agreement with measurements from the US Pacific coast around 1895. The most likely explanation for older ages in British oak in this period seems to be 14C depletion associated with the combustion of fossil fuels.

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