Molecular analysis of chalcone and dihydropinosylvin synthase from Scots pine (Pinus sylvestris), and differential regulation of these and related enzyme activities in stressed plants

1992 ◽  
Vol 18 (3) ◽  
pp. 489-503 ◽  
Author(s):  
Judith Fliegmann ◽  
Gudrun Schr�der ◽  
Sigrid Schanz ◽  
Lothar Britsch ◽  
Joachim Schr�der
Keyword(s):  
Pinus Sylvestris ◽  
Molecular Analysis ◽  
Scots Pine ◽  
Enzyme Activities ◽  
Differential Regulation ◽  
Related Enzyme

scholarly journals Phosphate status and acid phosphatase activity in soil and ectomycorrhizas in two mature stands of scots pine (Pinus sylvestris L.) exposed to different levels of anthropogenic pollution

2014 ◽  
Vol 68 (4) ◽  
pp. 311-317 ◽  
Author(s):  
Barbara Kieliszewska-Rokicka
Keyword(s):  
Acid Phosphatase ◽  
Pinus Sylvestris ◽  
Scots Pine ◽  
Enzyme Activities ◽  
Fine Roots ◽  
Dry Weight ◽  
Polluted Site ◽  
Fresh Weight ◽  
Reference Plot ◽  
Soil Acid Phosphatase

The relations between anthropogenic environmental pollution and the level of inorganic phosphorus in soil, enzyme activities of extracellular soil acid phosphatase and the surface acid phosphatase of excised ectomycorrhizas of Scots pine (<em>Pinus sylvestris</em> L.) were studied. Soil and root samples were taken from two Scots pine stands in central Poland: a polluted site exposed to long-term pollution from a steelworks and the city of Warsaw and a reference plot (control) free from direct impact of pollution. The polluted site was characterised by high concentration of trace elements (Cd, Pb, Cu, Zn, Mn, Cr) and low level of inorganic phosphate in soil. This site had significantly lower enzyme activities of soil acid phosphatase (0.54 µmoles <em>p</em>-nitrophenol released g<sup>-1</sup> dry weight h<sup>-1</sup>) and surface acid phosphatase of pine ectomycorrhizas (3.37 µmoles <em>p</em>-nitrophenol released g<sup>-1</sup> fresh weight h<sup>-1</sup>) than the control site (1.36 µmoles <em>p</em>-nitrophenol released g<sup>-1</sup> dry weight h<sup>-1</sup> and 12.46 µmoles <em>p</em>-nitrophenol released g<sup>-1</sup> fresh weight h<sup>-1</sup>, respectively). The levels of phosphate, carbon and nitrogen in pine fine roots were also analysed. Low concentrations of P0<sub>4</sub>-P and high N: P ratio in pine fine roots from polluted site were found. The results suggest that soil pollutants may have a negative effect on the extracellular acid phosphatase of soil and Scots pine ectomycorrhizas and on the phosphorus status in fine roots of the plant.

Effects of the Deer Antler Extract on Scopolamine-induced Memory Impairment and Its Related Enzyme Activities

2009 ◽  
Vol 38 (4) ◽  
pp. 409-414 ◽  
Author(s):  
Mi-Ra Lee ◽  
Bai-Shen Sun ◽  
Li-Juan Gu ◽  
Chun-Yan Wang ◽  
Zhe-Ming Fang ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Memory Impairment ◽  
Deer Antler ◽  
Related Enzyme

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 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
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