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Plant defense and long-distance signaling in the phloem.
In: Phloem: Molecular Cell Biology, Systemic Communication, Biotic Interactions. Weinheim: Wiley-VCH, 2013. 227-247
Systemic signals are perceived in distant plant tissues and initiate systemic stress resistance through priming or induction of defense responses. This chapter provides an overview of how distant tissues and organs are alerted to possible attacks by signals that move through vascular bundles. It discusses systemic wound response (SWR), systemic acquired resistance (SAR), and systemic acquired acclimation (SAA). It also reviews the systemic signals associated with SWR, SAR, and SAA that are thought to move, at least partially, through the phloem. Various signaling compounds that are involved in inducible stress resistance responses are transported systemically through the vasculature. Not only Jasmonic acid (JA) and systemin, but also electrical signals and possibly hydrogen peroxide (H2O2), play major parts in SWR. Salicylic acid (SA), lipid transfer protein (LTPs), and associated lipid derived signals, peptides, nitric oxide (NO), and H2O2 are mainly associated with SAR.
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Publication type Article: Edited volume or book chapter
Keywords long-distance signaling; phloem-mobile signals; plant defense; systemic acquired cclimation (SAA); systemic acquired resistance (SAR); systemic stress signaling; systemic wound response (SWR)
Book Volume Title Phloem: Molecular Cell Biology, Systemic Communication, Biotic Interactions
Quellenangaben Pages: 227-247
Publishing Place Weinheim
Institute(s) Institute of Biochemical Plant Pathology (BIOP)