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Plants (Basel)

Title:		Patterns of Plumericin Concentration in Leaves of Himatanthus tarapotensis (Apocynaceae) and Its Interactions with Herbivory in the Peruvian Amazon
Author(s):		Amasifuen Guerra CA; Patel K; Delprete PG; Spina AP; Grados J; Vasquez-Ocmin P; Gadea A; Rojas R; Guzman J; Sauvain M;
Address:		"Laboratorio Mixto Internacional de Quimica de la Vida, Institut de Recherche Pour le Developpement (IRD), Universidad Peruana Cayetano Heredia (UPCH), Avenida Honorio Delgado 430, Urb. Ingenieria, San Martin de Porres 34, Lima 15024, Peru. Direccion de Recursos Geneticos y Biotecnologia (DRGB), Instituto Nacional de Innovacion Agraria (INIA), Avenida La Molina N degrees 1981, La Molina, Lima 15024, Peru. Unidad de Investigacion en Productos Naturales, Laboratorios de Investigacion y Desarrollo, Universidad Peruana Cayetano Heredia (UPCH), Avenida Honorio Delgado 439, Urb. Ingenieria, San Martin de Porres 34, Lima 15024, Peru. AMAP, IRD, CNRS, CIRAD, INRA, Universite de Montpellier, TA A51/PS2, CEDEX 5, 34398 Montpellier, France. AMAP, IRD, Herbier de Guyane, Cite Rebard, 97300 Cayenne, France. Rua Capitao Leonidas Marques 894, Curitiba 81540-470, Brazil. Departamento de Entomologia, Museo de Historia Natural de la Universidad Nacional Mayor de San Marcos (UNMSM), Av. Gral. Antonio Alvarez de Arenales 1256, Jesus Maria, Lima 15072, Peru. UMR 152 PHARMA-DEV, IRD, Universite de Toulouse, CEDEX 9, 31062 Toulouse, France. Laboratorio Centinela de Helicobacter pylori, Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia (UPCH), Avenida Honorio Delgado 430, Urb. Ingenieria, San Martin de Porres 34, Lima 15024, Peru"
Journal Title:		Plants (Basel)
Year:		2022
Volume:		20220408
Issue:		8
Page Number:		-
DOI:		10.3390/plants11081011
ISSN/ISBN:		2223-7747 (Print) 2223-7747 (Electronic) 2223-7747 (Linking)
Abstract:		"We explored the concentration patterns of the bioactive metabolite plumericin produced by Himatanthus tarapotensis (Apocynaceae) under different edaphic conditions and variations in rainfall intensity, as well as its potential role in the chemical defense against insect herbivores. Values of plumericin concentration from leaves were obtained by High-Performance Liquid Chromatography, and evaluated as a function of differences in soil types, variation of precipitation, and variation of the abundance of insect herbivores, using first a Repeated Measures Correlation (rmcorr) and then a Generalized Linear Mixed Model (GLMM) analysis. Plumericin concentration is highly variable among plants, but with a significantly higher concentration in plants growing on clay soil compared to that of the white-sand soil habitat (p < 0.001). Plumericin concentration is not affected by precipitation. The caterpillar of Isognathus leachii (Lepidoptera: Sphingidae) is the most conspicuous herbivore of H. tarapotensis, and its presence is continuous but not related to plumericin concentration, probably because of its capacity to elude the chemical defense of this plant. Nevertheless, our multivariate model revealed that plumericin concentration is related to the abundance of Hymenoptera (Formicidae), and this relationship is significantly influenced by the soil parameters of carbon percentage, clay percentage, and phosphorous percentage (p < 0.001). Plumericin is a mediating agent in the interaction between H. tarapotensis and its natural environment. Variation in plumericin concentration would be induced by the abundance of Hymenoptera (Formicidae), probably as a chemical response against these insects, and by differences in soil nutrient availability"
Keywords:		Peru plant-herbivore interactions plumericin precipitation soil types;
Notes:		"PubMed-not-MEDLINEAmasifuen Guerra, Carlos A Patel, Kirti Delprete, Piero G Spina, Andrea P Grados, Juan Vasquez-Ocmin, Pedro Gadea, Alice Rojas, Rosario Guzman, Jesus Sauvain, Michel eng 392-2012-CONCYTEC-OAJ/National Council for Science, Technology and Technological Innovation (Consejo Nacional de Ciencia, Tecnologia e Innovacion Tecnologica, CONCYTEC) of the Peruvian Government/ Switzerland 2022/04/22 Plants (Basel). 2022 Apr 8; 11(8):1011. doi: 10.3390/plants11081011"