scholarly journals Investigation of the Effect of AtWIN1/SHN1 Overexpression on Poplar Trees

2017 ◽  
Vol 12 (1) ◽  
pp. 1-13
Author(s):  
Shaneka S. Lawson
Keyword(s):  
Poplar Trees

Groundwater Capture Using Hybrid Poplar Trees: Evaluation of a System in Ogden, Utah

2001 ◽  
Vol 3 (1) ◽  
pp. 87-104 ◽  
Author(s):  
A. Ferro ◽  
J. Chard ◽  
R. Kjelgren ◽  
B. Chard ◽  
D. Turner ◽  
...  
Keyword(s):  
Hybrid Poplar ◽  
Poplar Trees

Dieback and recovery in poplar and attack by the hornet clearwing moth, Sesia apiformis (Clerck) (Lepidoptera: Sesiidae)

2007 ◽  
Vol 97 (6) ◽  
pp. 555-567 ◽  
Author(s):  
N.A. Straw ◽  
G. Green ◽  
D.T. Williams
Keyword(s):  
Internal State ◽  
Adult Emergence ◽  
Moth Population ◽  
Poplar Trees ◽  
Rapid Restoration ◽  
Rate Of Recovery ◽  
Clearwing Moth ◽  
Original Survey ◽  
Crown Dieback ◽  
Larval Establishment

AbstractA survey of 801 poplar trees in central east England in 1999 demonstrated a correlation between crown dieback and infestation by hornet clearwing moth (Sesia apiformis), induced by a period of drought in 1995–1996. To determine whether trees colonised by S. apiformis would subsequently deteriorate and die or whether they could recover despite infestation and damage to the stem, all trees in the original survey were re-assessed in 2001, 2003 and 2005. The repeat surveys showed that trees with 70% or less crown dieback in 1999 replaced their canopy and generally improved by 2005, irrespective of the numbers of S. apiformis in the stem, whereas trees that had 75% or more crown dieback in 1999 either died or declined further. The presence of S. apiformis did not prevent tree recovery, and there was little evidence that infestation slowed the rate of recovery. Populations of S. apiformis, measured in terms of the numbers of adult emergence holes visible in the base of the trees, decreased between 2001 and 2005 at the same time as the amount of dieback visible in the canopy of the poplars markedly decreased. However, the fall in numbers of emergence holes at this time reflected a decline in larval establishment 2–3 years earlier, and indicated that the moth population had responded to a more rapid restoration in the internal state of the trees, which was not reflected immediately by the gradual replacement of dead branches and reduction in dieback symptoms.

Fatty acids of ozone-exposed Scots pine and poplar trees and of damaged field-grown Norway spruce trees

1991 ◽  
Vol 21 (1) ◽  
pp. 49-56 ◽  
Author(s):  
S. Kyburz ◽  
W. Eichenberger ◽  
T. Keller ◽  
H. Rennenberg ◽  
P. Schröder
Keyword(s):  
Fatty Acids ◽  
Norway Spruce ◽  
Scots Pine ◽  
Poplar Trees

Diverse developmental mutants revealed in an activation-tagged population of poplarThis article is one of a selection of papers published on the Special Issue of Poplar Research in Canada.

2007 ◽  
Vol 85 (11) ◽  
pp. 1071-1081 ◽  
Author(s):  
Edward J. Harrison ◽  
Michael Bush ◽  
Jonathan M. Plett ◽  
Daniel P. McPhee ◽  
Robin Vitez ◽  
...  
Keyword(s):  
Large Scale ◽  
Insertional Mutagenesis ◽  
Hybrid Poplar ◽  
Activation Tagging ◽  
Developmental Abnormalities ◽  
Endogenous Gene ◽  
Developmental Mutants ◽  
Poplar Trees ◽  
Wide Range ◽  
Mutant Lines

We have produced the largest population of activation-tagged poplar trees to date, approximately 1800 independent lines, and report on phenotypes of interest that have been identified in tissue culture and greenhouse conditions. Activation tagging is an insertional mutagenesis technique that results in the dominant upregulation of an endogenous gene. A large-scale Agrobacterium -mediated transformation protocol was used to transform the pSKI074 activation-tagging vector into Populus tremula × Populus alba hybrid poplar. We have screened the first 1000 lines for developmental abnormalities and have a visible mutant frequency of 2.4%, with alterations in leaf and stem structure as well as overall stature. Most of the phenotypes represent new phenotypes that have not previously been identified in poplar and, in some cases, not in any other plant either. Molecular analysis of the T-DNA inserts of a subpopulation of mutant lines reveal both single and double T-DNA inserts with double inserts more common in lines with visible phenotypes. The broad range of developmental mutants identified in this pilot screen of the population reveals that it will be a valuable resource for gene discovery in poplar. The full value of this population will only be realized as we screen these lines for a wide range of phenotypes.

scholarly journals Transpiration and water relations of poplar trees growing close to the water table

1999 ◽  
Vol 19 (9) ◽  
pp. 563-573 ◽  
Author(s):  
H. Zhang ◽  
J. I. L. Morison ◽  
L. P. Simmonds
Keyword(s):  
Water Table ◽  
Water Relations ◽  
Poplar Trees
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