scholarly journals The proteome of Populus nigra woody root: response to bending

2012 ◽  
Vol 110 (2) ◽  
pp. 415-432 ◽  
Author(s):  
Dalila Trupiano ◽  
Mariapina Rocco ◽  
Giovanni Renzone ◽  
Andrea Scaloni ◽  
Vincenzo Viscosi ◽  
...  
Keyword(s):  
Populus Nigra ◽  
Woody Root ◽  
Root Response

Temporal analysis of poplar woody root response to bending stress

2013 ◽  
Vol 150 (2) ◽  
pp. 174-193 ◽  
Author(s):  
Dalila Trupiano ◽  
Mariapina Rocco ◽  
Giovanni Renzone ◽  
Andrea Scaloni ◽  
Miriam Rossi ◽  
...  
Keyword(s):  
Temporal Analysis ◽  
Bending Stress ◽  
Woody Root ◽  
Root Response

Post-pollination paternal reproductive success in Populus nigra: a male affair

2014 ◽  
Vol 10 (3) ◽  
pp. 565-572
Author(s):  
A. Dowkiw ◽  
N. Chenault ◽  
V. Guérin ◽  
C. Borel ◽  
C. Bastien ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Populus Nigra

Changes in levels of foliar carbohydrates and myo-inositol before premature leaf senescence of Populus nigra induced by a mixture of O3 and SO2

1996 ◽  
Vol 74 (6) ◽  
pp. 965-970 ◽  
Author(s):  
R. C. Fialho ◽  
J. Bücker
Keyword(s):  
Air Pollution ◽  
Leaf Senescence ◽  
Populus Nigra ◽  
Continuous Exposure ◽  
Nonstructural Carbohydrates ◽  
Progressive Decline ◽  
Total Nonstructural Carbohydrates ◽  
Leaf Yellowing ◽  
Premature Leaf Senescence ◽  
Early Indication

Specimens of Populus nigra L. cv. Loenen exhibit premature leaf senescence when exposed for a few weeks to realistic air pollution. In this study, the changes in levels of foliar carbohydrates and myo-inositol (MI) due to 30 ± 1 nL/L O3 + 12 ± 1 nL/L SO2 from the onset of exposure to the occurrence of premature abscission is presented. Petioles and laminae of the 12 oldest leaves were separately analysed on days 0, 4, 8, 12, 16, 20, 22, and 32 of continuous exposure, which was performed in open-top chambers (OTC). On days 8 to 12, clearly prior to yellowing (starting on day 22), total nonstructural carbohydrates (TNC; starch + raffinose + sucrose + glucose + fructose + MI) in the fumigated laminae exceeded that in controls by about 30%. This increase was due to higher amounts of different soluble forms, while starch remained unaltered. From day 20 onwards, the level of TNC in the fumigated laminae progressively fell below that in controls. This decrease was due to a progressive decline in starch, which had started on day 16 and was dominating, although glucose and raffinose increased significantly. In the petioles, starch, sucrose, and glucose decreased because of fumigation with the occurrence of leaf yellowing, while raffinose increased. In contrast, MI in the petioles progressively accumulated directly on exposure until leaf yellowing occurred. The results are discussed in terms of the "general adaption syndrome" of H. Selye (1936. Nature (London), 138: 32). The marked MI response in petioles is concluded to be an early indication of phytorelevant O3 + SO2 pollution. Keywords: air pollution, carbohydrates, myo-inositol, pigments, Populus nigra L., senescence, stress.

Removal of heavy metal ions from aqueous solution using Populus nigra sawdust-based activated carbon

2021 ◽  
Vol 221 ◽  
pp. 239-251
Author(s):  
Syed Muhammad Salman ◽  
Fouzia Kamal ◽  
Muhammad Zahoor ◽  
Muhammad Wahab ◽  
Durr e Shahwar ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Populus Nigra

scholarly journals Cambridge University Natural Radiocarbon Measurements IV: Nuclear-Weapon Testing and the Atmospheric Radiocarbon Concentration

Radiocarbon ◽  
1961 ◽  
Vol 3 ◽  
pp. 77-80 ◽  
Author(s):  
H. Godwin ◽  
E. H. Willis
Keyword(s):  
Rapid Growth ◽  
Nuclear Weapon ◽  
Annual Ring ◽  
Populus Nigra ◽  
Annual Rings ◽  
Cambridge University ◽  
Annual Crops ◽  
Nuclear Weapon Testing ◽  
Weapon Testing

In continuance of investigations upon successive annual crops of oats reported in Radiocarbon Supplement, Volume 2, we undertook the analysis of successive annual rings of a tree that had been growing throughout the period covered by the oat-crop assays, namely 1953 to 1959. The selected tree was a straight-boled specimen of Populus nigra from the Forestry Commission's plantations at Santon Downham, near Thetford, Norfolk. It had been planted in 1929 and was felled on 21 October, 1959. Shortly afterwards, it was brought into the laboratory and sawn into slices just over 1 in. thick. The surfaces having been smoothed, the annual-ring contacts were marked, and within each annual ring the inner (spring) wood was marked off from the outer (autumn) wood. The tree had been chosen as one exhibiting rapid growth and it proved fairly easy to dissect off with a chisel all the separate half-rings between spring 1953 and the end of 1959. In the event, activities were determined only upon four of the half or whole rings.

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