Poplar extrafloral nectaries: two types, two strategies of indirect defenses against herbivores.

Plant Physiology
María Escalante-PérezPeter Ache

Abstract

Many plant species grow extrafloral nectaries and produce nectar to attract carnivore arthropods as defenders against herbivores. Two nectary types that evolved with Populus trichocarpa (Ptr) and Populus tremula × Populus tremuloides (Ptt) were studied from their ecology down to the genes and molecules. Both nectary types strongly differ in morphology, nectar composition and mode of secretion, and defense strategy. In Ptt, nectaries represent constitutive organs with continuous merocrine nectar flow, nectary appearance, nectar production, and flow. In contrast, Ptr nectaries were found to be holocrine and inducible. Neither mechanical wounding nor the application of jasmonic acid, but infestation by sucking insects, induced Ptr nectar secretion. Thus, nectaries of Ptr and Ptt seem to answer the same threat by the use of different mechanisms.

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Citations

Aug 15, 2012·Molecular & Cellular Proteomics : MCP·Waltraud X SchulzeJan J Enghild
May 23, 2015·Proceedings of the National Academy of Sciences of the United States of America·Sönke ScherzerRainer Hedrich
Oct 19, 2012·The Plant Journal : for Cell and Molecular Biology·Domancar Orona-TamayoMartin Heil
Mar 5, 2013·The Plant Journal : for Cell and Molecular Biology·Dennis ImesRainer Hedrich
Nov 28, 2013·Biochimica Et Biophysica Acta·Paulina PaszotaKristian W Sanggaard
Aug 4, 2012·Molecular Plant·María Escalante-PérezPeter Ache
Aug 4, 2018·Frontiers in Plant Science·Massimo NepiStefano Mancuso
Sep 4, 2018·Frontiers in Plant Science·Elizabeth Quintana-RodríguezDomancar Orona-Tamayo
Jun 28, 2019·Plant Direct·Sang-Hyuck ParkChristopher S Pauli

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