title: Fatty Acid Diversity is Not Associated with Neutral Genetic Diversity in Native Populations of the Biodiesel Plant Jatropha curcas L.
abstract: Jatropha curcas L. (Euphorbiaceae) is a shrub native to Mexico and Central America, which produces seeds with a high oil content that can be converted to biodiesel. The genetic diversity of this plant has been widely studied, but it is not known whether the diversity of the seed oil chemical composition correlates with neutral genetic diversity. The total seed oil content, the diversity of profiles of fatty acids and phorbol esters were quantified, also, the genetic diversity obtained from simple sequence repeats was analyzed in native populations of J. curcas in Mexico. Using the fatty acids profiles, a discriminant analysis recognized three groups of individuals according to geographical origin. Bayesian assignment analysis revealed two genetic groups, while the genetic structure of the populations could not be explained by isolation-by-distance. Genetic and fatty acid profile data were not correlated based on Mantel test. Also, phorbol ester content and genetic diversity were not associated. Multiple linear regression analysis showed that total oil content was associated with altitude and seasonality of temperature. The content of unsaturated fatty acids was associated with altitude. Therefore, the cultivation planning of J. curcas should take into account chemical variation related to environmental factors.
authors.affiliation: Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Antigua carretera a Pátzcuaro No. 8701, Col. Ex-Hacienda de San José de la Huerta, CP 58190, Morelia, Michoacán, México.|Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua carretera a Pátzcuaro No. 8701, Col. Ex-Hacienda de San José de la Huerta, CP 58190, Morelia, Michoacán, México.
authors.forename: Yesenia
authors.initials: Y
authors.lastname: Martínez-Díaz
authors.affiliation: Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua carretera a Pátzcuaro No. 8701, Col. Ex-Hacienda de San José de la Huerta, CP 58190, Morelia, Michoacán, México.
authors.forename: Antonio
authors.initials: A
authors.lastname: González-Rodríguez
authors.affiliation: Centro de Investigación Regional Pacífico Centro, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Campo experimental Valle de Apatzingán, Km. 17.5, Carretera Apatzingán-Cuatro Caminos Km 17.5, CP 6078, Apatzingán, Michoacán, México.
authors.forename: Héctor Rómulo
authors.initials: HR
authors.lastname: Rico-Ponce
authors.affiliation: Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua carretera a Pátzcuaro No. 8701, Col. Ex-Hacienda de San José de la Huerta, CP 58190, Morelia, Michoacán, México.
authors.forename: Víctor
authors.initials: V
authors.lastname: Rocha-Ramírez
authors.affiliation: Instituto de Biociencias, Universidad Autónoma de Chiapas, Carretera a Puerto Madero Km 2.0, CP 30798, Tapachula, Chiapas, México.
authors.forename: Isidro
authors.initials: I
authors.lastname: Ovando-Medina
authors.affiliation: Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua carretera a Pátzcuaro No. 8701, Col. Ex-Hacienda de San José de la Huerta, CP 58190, Morelia, Michoacán, México.
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: Espinosa-García
mesh_terms: D056804:Biofuels; D004777:Environment; D005227:Fatty Acids / Q000032:analysis* / Q000235:genetics; D014644:Genetic Variation; D031286:Jatropha / Q000737:chemistry*; D008800:Mexico; D018895:Microsatellite Repeats; D010703:Phorbol Esters / Q000032:analysis; D010938:Plant Oils / Q000737:chemistry; D012639:Seeds / Q000737:chemistry
chemical_list: D056804:Biofuels; D005227:Fatty Acids; D010703:Phorbol Esters; D010938:Plant Oils
keywords: Biodiesel quality; Genetic structure; Jatropha curcas L.; Jatropha plantation planning; Phorbol ester; Total oil content