scholarly journals Global Transcriptome Analysis of Constitutive Resistance to the White Pine Weevil in Spruce

2011 ◽  
Vol 3 ◽  
pp. 851-867 ◽  
Author(s):  
Sébastien Verne ◽  
Barry Jaquish ◽  
Rick White ◽  
Carol Ritland ◽  
Kermit Ritland
Keyword(s):  
Transcriptome Analysis ◽  
White Pine ◽  
Pine Weevil ◽  
Constitutive Resistance ◽  
Global Transcriptome ◽  
White Pine Weevil

Foliar and cortical monoterpenes in Sitka spruce: potential indicators of resistance to the white pine weevil, Pissodesstrobi Peck (Coleoptera: Curculionidae)

1987 ◽  
Vol 17 (7) ◽  
pp. 740-745 ◽  
Author(s):  
J. E. Brooks ◽  
J. H. Borden ◽  
H. D. Pierce Jr.
Keyword(s):  
Sitka Spruce ◽  
River Valley ◽  
White Pine ◽  
Breeding For Resistance ◽  
Pine Weevil ◽  
Relative Composition ◽  
White Pine Weevil

To determine whether a resistant chemotype to the white pine weevil, Pissodesstrobi Peck, could be identified, the relative composition of monoterpenes in weevil-susceptible Sitka spruce, Piceasitchensis (Bong.) Carr., was compared to that in apparently resistant trees. Foliar and cortical analysis of trees from Green Timbers Nursery in Surrey, Nootka Island, Sayward, and the Nass River Valley, B.C., revealed significant differences between 38 resistant and 60 susceptible trees. The foliage of resistant trees, compared with that of susceptible trees, had significantly lower amounts of isoamyl isovalerate at three sites and lower amounts of isopentenyl isovalerate at one site. Amounts of a α-pinene, β-pinene, camphene, and camphor were significantly higher in some resistant trees, but these differences were not consistent between sites. Myrcene, β-phellandrene, and limonene levels were much higher in the cortex of susceptible trees than the resistant trees from the Nass River and Green Timbers Nursery. Thus none of the monoterpenes, singly or in combination, is a consistent indicator of resistance to the white pine weevil. The two isovalerates could possibly be used as indicators of resistance. However, a broader spectrum of resistance characteristics should be employed if breeding for resistance is desired.

Variation in the induced resin response of white spruce, Piceaglauca, to attack by Pissodesstrobi

1996 ◽  
Vol 26 (6) ◽  
pp. 967-972 ◽  
Author(s):  
René I. Alfaro ◽  
G.K. Kiss ◽  
A. Yanchuk
Keyword(s):  
White Spruce ◽  
White Pine ◽  
Response Level ◽  
Response Intensity ◽  
Attack Response ◽  
Pine Weevil ◽  
Nonlinear Fashion ◽  
White Pine Weevil

The intensity of the traumatic resin response in white spruce, Piceaglauca (Moench) Voss, to attack by the white pine weevil, Pissodesstrobi Peck, was studied in trees with different severities of attack. The response level was highest in trees where the attacks failed, i.e., where eggs were laid but the brood was killed and no adults emerged. Successfully attacked trees had, on average, only 62% of the response intensity of trees with failed attacks. Response intensity in trees that had been subjected only to feeding was much lower, at 42% of the failed attack response. Healthy unattacked trees showed no or little traumatic resin response. Response intensity varied in a nonlinear fashion with the number of eggs laid, increasing rapidly from zero in healthy trees, being highest in trees having between 10 and 60 egg punctures, and progressively lower again in trees with higher numbers of egg punctures. For a given number of egg punctures, resistant white spruce trees had a consistently higher traumatic resin response than susceptible trees. The number of eggs laid on a leader was inversely related to the intensity of the traumatic resin response and to the timing of the attack. Fewer eggs were laid on leaders with high traumatic resin response or attacked late in the season than on leaders with lower resin response or attacked early in the season.

scholarly journals Genetically based resistance to the white pine weevil in jack pine and eastern white pine

2010 ◽  
Vol 86 (6) ◽  
pp. 775-779 ◽  
Author(s):  
Alice Verrez ◽  
Dan Quiring ◽  
Thibaut Leinekugel Le Cocq ◽  
Greg Adams ◽  
Yill Sung Park
Keyword(s):  
Pinus Banksiana ◽  
Significant Proportion ◽  
Tree Height ◽  
Jack Pine ◽  
White Pine ◽  
Pissodes Strobi ◽  
Pine Weevil ◽  
Tree Resistance ◽  
Trade Offs ◽  
White Pine Weevil

White pine weevil (Pissodes strobi Peck) damage was evaluated in one white pine (Pinus strobus L.) and four jack pine(Pinus banksiana Lamb) half-sib family test sites to determine the role of tree genotype in resistance to the weevil. Halfsibfamily explained a significant proportion of the variation in weevil attack at all sites. Estimates of family (0.16-0.54)and individual (0.09-0.24) heritabilities of jack pine resistance to white pine weevil were moderate. Estimates of family(0.37) and individual (0.22) heritability of resistance of white pine to the weevil were also moderate when the percentageof test trees damaged by the weevil was relatively low, but were insignificant four years later when more than three-quartersof trees were damaged. Significant positive correlations between mean tree height and mean incidence of trees damagedby the weevil were observed for four of seven site-years but relationships were weak, suggesting that any cost, withrespect to height growth, to breeding weevil resistant trees may be small.Key words: Pinus, Pissodes strobi, trade-offs, tree improvement, tree resistance, white pine weevil.

Life Tables of the White Pine Weevil, Pissodes strobi , 1 in Central Maine 2

1982 ◽  
Vol 11 (3) ◽  
pp. 555-564 ◽  
Author(s):  
Wayne N. Dixon ◽  
Mark W. Houseweart
Keyword(s):  
Life Tables ◽  
White Pine ◽  
Pissodes Strobi ◽  
Pine Weevil ◽  
White Pine Weevil

Relationship between cortical resin acids and resistance of Sitka spruce to the white pine weevil

1996 ◽  
Vol 74 (4) ◽  
pp. 599-606 ◽  
Author(s):  
Elizabeth S. Tomlin ◽  
John H. Borden ◽  
Harold D. Pierce Jr.
Keyword(s):  
Discriminant Analysis ◽  
Resin Acid ◽  
Sitka Spruce ◽  
Canonical Discriminant Analysis ◽  
Picea Sitchensis ◽  
Resin Acids ◽  
White Pine ◽  
Pissodes Strobi ◽  
Pine Weevil ◽  
White Pine Weevil

Cortical resin acids were analyzed both quantitatively and qualitatively among 10 provenances and 11 genotypes of Sitka spruce, Picea sitchensis Bong (Carr.), putatively resistant to the white pine weevil, Pissodes strobi (Peck), and compared with susceptible trees. Trees in 5 of the 11 resistant genotypes had significantly greater amounts of cortical resin acid than susceptible trees. Of seven individual acids analyzed, pimaric, isopimaric, levopimaric, dehydroabietic, abietic, and neoabietic acid, but not palustric acid, were found in significantly greater amounts in trees from resistant than susceptible provenances. Eighteen percent of the variation in resin acid content could be accounted for by variation in the capacity of cortical resin ducts, indicating that the other 82% of variation is a result of differences in resin acid concentration in the resin. Trees with very high resin acid levels may have a greater capacity for resinosis than susceptible trees, may deter feeding, or may produce resin that is toxic to eggs and larvae. Canonical discriminant analysis revealed that several resistant clones, particularly two from the Kitwanga provenance, could be distinguished from others on the basis of their resin acid profiles. Because it separated trees on the basis of genotype, but not according to degree of resistance, canonical discriminant analysis may be more useful in "chemotyping" trees than in screening for resistance. Keywords: Picea, cortex, resin acids, Pissodes strobi, resistance.

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