scholarly journals Evolution of Diterpene Metabolism: Sitka Spruce CYP720B4 Catalyzes Multiple Oxidations in Resin Acid Biosynthesis of Conifer Defense against Insects

2011 ◽  
Vol 157 (4) ◽  
pp. 1677-1695 ◽  
Author(s):  
Björn Hamberger ◽  
Toshiyuki Ohnishi ◽  
Britta Hamberger ◽  
Armand Séguin ◽  
Jörg Bohlmann
Keyword(s):  
Resin Acid ◽  
Sitka Spruce ◽  
Acid Biosynthesis ◽  
Conifer Defense ◽  
Multiple Oxidations

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.

scholarly journals Evolution of Conifer Diterpene Synthases: Diterpene Resin Acid Biosynthesis in Lodgepole Pine and Jack Pine Involves Monofunctional and Bifunctional Diterpene Synthases

2012 ◽  
Vol 161 (2) ◽  
pp. 600-616 ◽  
Author(s):  
Dawn E. Hall ◽  
Philipp Zerbe ◽  
Sharon Jancsik ◽  
Alfonso Lara Quesada ◽  
Harpreet Dullat ◽  
...  
Keyword(s):  
Lodgepole Pine ◽  
Resin Acid ◽  
Jack Pine ◽  
Acid Biosynthesis ◽  
Diterpene Synthases

scholarly journals Modularity of Conifer Diterpene Resin Acid Biosynthesis: P450 Enzymes of Different CYP720B Clades Use Alternative Substrates and Converge on the Same Products

2016 ◽  
Vol 171 (1) ◽  
pp. 152-164 ◽  
Author(s):  
Katrin Geisler ◽  
Niels Berg Jensen ◽  
Macaire M.S. Yuen ◽  
Lina Madilao ◽  
Jörg Bohlmann
Keyword(s):  
Resin Acid ◽  
Acid Biosynthesis ◽  
Alternative Substrates

Conifer defense against insects: Proteome analysis of Sitka spruce (Picea sitchensis) bark induced by mechanical wounding or feeding by white pine weevils (Pissodes strobi)

PROTEOMICS ◽  
2007 ◽  
Vol 7 (2) ◽  
pp. 248-270 ◽  
Author(s):  
Dustin Lippert ◽  
Sunita Chowrira ◽  
Steven Gregory Ralph ◽  
Jun Zhuang ◽  
Dana Aeschliman ◽  
...  
Keyword(s):  
Proteome Analysis ◽  
Sitka Spruce ◽  
Picea Sitchensis ◽  
White Pine ◽  
Mechanical Wounding ◽  
Pissodes Strobi ◽  
Pine Weevils ◽  
Conifer Defense

Inhibition of early steps of de novo fatty-acid biosynthesis by different xenobiotica

1991 ◽  
Vol 81 (2) ◽  
pp. 251-255
Author(s):  
Manfred Focke ◽  
Andrea Feld ◽  
Hartmut K. Lichtenthaler
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Biosynthesis ◽  
De Novo ◽  
Acid Biosynthesis
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