Methyl Jasmonate Induces Traumatic Resin Ducts, Terpenoid Resin Biosynthesis, and Terpenoid Accumulation in Developing Xylem of Norway Spruce Stems
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TLDR
The induction of a complex defense response in Norway spruce by methyl jasmonate application provides new avenues to evaluate the role of resin defenses for protection of conifers against destructive pests such as white pine weevils, bark beetles, and insect-associated tree pathogens.Abstract:
Norway spruce (Picea abies L. Karst) produces an oleoresin characterized by a diverse array of terpenoids, monoterpenoids, sesquiterpenoids, and diterpene resin acids that can protect conifers against potential herbivores and pathogens. Oleoresin accumulates constitutively in resin ducts in the cortex and phloem (bark) of Norway spruce stems. De novo formation of traumatic resin ducts (TDs) is observed in the developing secondary xylem (wood) after insect attack, fungal elicitation, and mechanical wounding. Here, we characterize the methyl jasmonate-induced formation of TDs in Norway spruce by microscopy, chemical analyses of resin composition, and assays of terpenoid biosynthetic enzymes. The response involves tissue-specific differentiation of TDs, terpenoid accumulation, and induction of enzyme activities of both prenyltransferases and terpene synthases in the developing xylem, a tissue that constitutively lacks axial resin ducts in spruce. The induction of a complex defense response in Norway spruce by methyl jasmonate application provides new avenues to evaluate the role of resin defenses for protection of conifers against destructive pests such as white pine weevils (Pissodes strobi), bark beetles (Coleoptera, Scolytidae), and insect-associated tree pathogens.read more
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References
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Book
Anatomy of seed plants
TL;DR: In this paper, the authors describe the development of a seed from embryo to the adult plant, including the growth of the cell wall and the root growth in the secondary growth stages of the seed.
Journal ArticleDOI
Biosynthesis and action of jasmonates in plants
TL;DR: Modulation of lipoxygenase and allene oxide synthase gene expression in transgenic plants raises new questions about the compartmentation of the biosynthetic pathway and its regulation.
Journal ArticleDOI
Anatomy of Seed Plants
TL;DR: Internal Organization of the Plant Body, from embryo to the Adult Plant, and some Factors in Development of Secondary Xylem: Common Types of Secondary Growth.
Journal ArticleDOI
The 1-deoxy-d-xylulose-5-phosphate pathway of isoprenoid biosynthesis in plants
TL;DR: The DOXP pathway of IPP formation starts from D-glyceraldehyde-3-phosphate and pyruvate, with DOXP-synthase as the starting enzyme, and provides new insight into the regulation of chloroplast metabolism.
Journal ArticleDOI
Octadecanoid Precursors of Jasmonic Acid Activate the Synthesis of Wound-Inducible Proteinase Inhibitors.
TL;DR: The results suggest that the octadecanoid intermediates may participate in a lipid-based signaling system that activates proteinase inhibitor synthesis in response to insect and pathogen attack.