| Title: | "Poplar extrafloral nectaries: two types, two strategies of indirect defenses against herbivores" |
| Author(s): | Escalante-Perez M; Jaborsky M; Lautner S; Fromm J; Muller T; Dittrich M; Kunert M; Boland W; Hedrich R; Ache P; |
| Address: | "Biozentrum, Julius-von-Sachs-Institut fur Biowissenschaften, University Wurzburg, D-97082 Wuerzburg, Germany" |
| ISSN/ISBN: | 1532-2548 (Electronic) 0032-0889 (Print) 0032-0889 (Linking) |
| 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 x 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" |
| Keywords: | "Amino Acids/metabolism Animals Cluster Analysis Exocytosis/genetics Fatty Acids, Volatile/metabolism Flowers/*immunology/*parasitology Gene Expression Regulation, Plant Genes, Plant/genetics Herbivory/*physiology Insecta/physiology Larva/physiology Oligon;" |
| Notes: | "MedlineEscalante-Perez, Maria Jaborsky, Mario Lautner, Silke Fromm, Jorg Muller, Tobias Dittrich, Marcus Kunert, Maritta Boland, Wilhelm Hedrich, Rainer Ache, Peter eng Research Support, Non-U.S. Gov't 2012/05/11 Plant Physiol. 2012 Jul; 159(3):1176-91. doi: 10.1104/pp.112.196014. Epub 2012 May 9" |
